{"title":"3mm Aluminium Flat Coping","description":"\u003ch2\u003e3mm Aluminium Flat Coping: Durable and Versatile Protective Solution\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e3mm Aluminium Flat Coping\u003c\/strong\u003e offers a reliable way to protect building edges from weather damage. This premium aluminium product ensures lasting durability and performance under all weather conditions. Its flat, sleek design creates a modern, smooth finish that significantly enhances the visual appeal of any structure.\u003c\/p\u003e\n\u003cp\u003eAluminium is recognized for being lightweight yet strong, making it an ideal choice for outdoor and construction applications. The coping’s aluminium base provides excellent resistance to corrosion and various environmental factors. The anodizing treatment adds a protective coating, extending the product's lifespan while maintaining its attractive appearance.\u003c\/p\u003e\n\u003ch3\u003eFeatures of the 3mm Aluminium Flat Coping\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA solid 3mm thickness guarantees strength and stability for any installation type.\u003c\/li\u003e\n\u003cli\u003eThe flat design fits perfectly on parapet walls, rooftops, and boundary walls, delivering clean and tidy edges.\u003c\/li\u003e\n\u003cli\u003eThis aluminium coping effectively prevents water infiltration, safeguarding buildings against weather damage and moisture issues.\u003c\/li\u003e\n\u003cli\u003eUsing aluminium as the material ensures superior rust and corrosion resistance compared to many other metals.\u003c\/li\u003e\n\u003cli\u003eThe anodizing finish enhances durability while preserving color retention through extended exposure to sunlight and rain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis aluminium coping is suitable for both commercial and residential buildings. It protects structures efficiently from rainwater and environmental elements. Its low-maintenance design helps maintain an attractive look with minimal upkeep for many years.\u003c\/p\u003e\n\u003ch2\u003eApplications of 3mm Aluminium Flat Coping in Construction\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e3mm Aluminium Flat Coping\u003c\/strong\u003e is widely utilized across numerous construction projects. These include roof edges, boundary walls, parapet walls, and various architectural details. Its flat shape facilitates a straightforward installation process, resulting in a neat and professional finish on any building exterior.\u003c\/p\u003e\n\u003cp\u003eArchitects and builders favor aluminium coping because it resists environmental stress with ease. The anodizing process provides an additional protective surface layer, preventing corrosion over long periods. These advantages make it a dependable choice to effectively enhance building longevity and resilience.\u003c\/p\u003e\n\u003ch3\u003eBenefits of Aluminium Coping\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe lightweight nature of aluminium simplifies handling and onsite installation, making work faster and safer.\u003c\/li\u003e\n\u003cli\u003eIt offers exceptional weather resistance that outperforms many commonly used metals, including steel and iron.\u003c\/li\u003e\n\u003cli\u003eCorrosion resistance translates to less frequent maintenance, saving time and reducing costs in the long term.\u003c\/li\u003e\n\u003cli\u003eThe coping is available in various sizes, allowing accommodation of different architectural and project needs with ease.\u003c\/li\u003e\n\u003cli\u003eIt improves building aesthetics by providing sharp, tidy edges and a professional, modern look.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChoosing this aluminium coping successfully combines practicality with style. The anodizing treatment not only boosts durability but also upgrades the product’s visual appeal. Overall, the \u003cstrong\u003e3mm Aluminium Flat Coping\u003c\/strong\u003e is an excellent option for protecting and enhancing the exterior of modern buildings.\u003c\/p\u003e\n\u003ch2\u003eInstallation and Maintenance Advice for 3mm Aluminium Flat Coping\u003c\/h2\u003e\n\u003cp\u003eProper installation is key to ensuring sound water drainage and a secure fit. The flat design enables installers to work smoothly without requiring complex fittings or adjustments. It is important to prepare clean, dry, and debris-free surfaces before fitting the aluminium coping to ensure a lasting bond.\u003c\/p\u003e\n\u003cp\u003eFollowing installation, the coping requires minimal maintenance to remain effective. Occasional cleaning removes dirt buildup and helps preserve the anodizing finish. Regular inspections for any displacement or damage keep the coping in good condition for many years, ensuring continuous building protection.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose 3mm Aluminium Flat Coping?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e3mm Aluminium Flat Coping\u003c\/strong\u003e, combining durable aluminium with anodizing surface protection, stands out in the market. It offers remarkable resistance to corrosion, impacts, and harsh weather conditions, effectively shielding buildings year-round from environmental wear and tear.\u003c\/p\u003e\n\u003cp\u003eBesides protection, this aluminium coping adds sleek, modern lines to any building design. Acting as a protective layer, it greatly enhances the building’s overall aesthetics and durability. Using this coping can increase both the longevity and appearance of your building envelope.\u003c\/p\u003e\n\u003cp\u003eYou can find us on Google Maps or contact us directly for any enquiries related to aluminium coping solutions and custom orders.\u003c\/p\u003e","products":[{"product_id":"aluminium-coping-upstand-75mm-1","title":"3mm Aluminium Flat Coping – Stopend Upstand | 75mm External Leg","description":"\u003cp class=\"MsoNormal\"\u003eThe end of a coping run is often where water finds its way in. On flat roof parapets around Chelmsford, Brentwood, Basildon and East London, an open or poorly finished end can leave the wall head exposed to driving rain, frost cycles and staining down the face of the building.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis 3mm aluminium coping upstand gives the end of the run a clean, raised termination instead of relying on a cut edge and a heavy bead of sealant. It is a practical detail for wider wall tops, commercial units, schools, care homes, extensions and modern parapet designs where the finish needs to look sharp and keep water away from vulnerable edges.\u003c\/p\u003e\n\u003ch2 class=\"OMSH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe 3mm \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ealuminium flat coping\u003c\/span\u003e\u003c\/a\u003e stopend upstand is a made to order end piece for finishing a flat coping run with a 75mm external leg. The integrated upstand helps stop wind driven rain and water overspill at the end of the coping, which makes it useful on exposed parapets and wall heads across the South East.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOnline Metal Store Ltd supplies this component as part of a wider \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ealuminium copings\u003c\/span\u003e\u003c\/a\u003e system manufactured from its Chelmsford, Essex base. It is designed for buyers who want a matching end detail for a 3mm coping run, with powder coating in a selected RAL colour so the upstand, corner pieces and straight lengths stay visually consistent.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFor a full installation, this upstand should be ordered with the right straight coping sections, the matching \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003e3mm aluminium flat coping corner\u003c\/span\u003e\u003c\/a\u003e, \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e and suitable fixings. Ordering the full system together helps the colour, profile and installation method stay consistent across the job.\u003c\/p\u003e\n\u003ch2 class=\"OMSH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eKey Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eRaised End Protection Where the Coping Run Finishes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThe built in upstand gives the end of the run a raised barrier rather than leaving a flat open edge. That matters on exposed rooflines because wind can push rain sideways across the top of the coping, especially on taller buildings, coastal sites or open developments around Essex and Kent.\u003c\/p\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003e3mm Aluminium for Wide Wall Tops\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThis product is made from 3mm aluminium, which gives it a more rigid feel than lighter accessory pieces. It suits wider coping sizes where the end detail needs to feel stable, sit neatly and match the heavier 3mm flat coping range.\u003c\/p\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003ePowder Coated in Any RAL Colour\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThe product can be powder coated to the selected RAL colour, making it easier to match dark window frames, brickwork, render, cladding or the wider coping system. On modern schemes in places like Colchester, Braintree or Central London, that colour match helps the roof edge look intentional rather than patched together.\u003c\/p\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eCorrosion Resistant for UK Weather\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eAluminium is a sensible choice for the UK climate because it performs well in damp conditions and does not rust like untreated steel. With the right powder coating and installation detail, it gives a low maintenance finish against rain, frost and salt laden air in exposed locations.\u003c\/p\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eCleaner Finish Than Site Made Closures\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eA factory made upstand gives a cleaner and more predictable result than trying to fold or seal a closure on site. It helps roofers and contractors avoid rough cut edges, excessive sealant, visible gaps and weak corners at the end of the parapet.\u003c\/p\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eUK Manufactured with Fast Delivery Support\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eBecause the product is supplied by a UK based specialist in Chelmsford, it suits roofers, builders and developers who need made to order aluminium components without long overseas lead times. That is useful when a missing end detail is holding up final snagging or handover.\u003c\/p\u003e\n\u003ch2 class=\"OMSH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eProduct Name: \u003c\/b\u003e3mm Aluminium Flat Coping - Stopend Upstand | 75mm External Leg\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eMaterial: \u003c\/b\u003eArchitectural grade aluminium\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eThickness: \u003c\/b\u003e3mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eProfile Type: \u003c\/b\u003eFlat coping stopend upstand\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eExternal Leg: \u003c\/b\u003e75mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eAvailable Sizes: \u003c\/b\u003e510mm, 535mm, 560mm, 585mm, 610mm, 635mm, 660mm, 685mm, 710mm, 735mm, 760mm, 785mm, 810mm, 835mm, 860mm, 885mm, 910mm, 935mm, 960mm, 985mm, 1010mm, 1035mm and 1060mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eFinish: \u003c\/b\u003ePowder coated in selected RAL colour\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eUse: \u003c\/b\u003eEnd termination for 3mm aluminium flat coping runs\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003ePrice Shown on Current Page: \u003c\/b\u003eFrom £72.80 ex VAT and £87.36 inc VAT\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eImportant Page Note: \u003c\/b\u003eThe current selector appears to show 010mm, which should be checked and corrected to 1010mm if that is the intended size.\u003c\/p\u003e\n\u003ch2 class=\"OMSH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eChoosing the Right Size \/ Width \/ Thickness\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe size selector should be treated as the overall coping width, not the run length. The right size depends on the finished wall width, insulation build up, waterproofing detail and the required overhang or drip edge.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003eUse the 510mm to 610mm sizes for slimmer wide parapets where a 3mm flat coping is still required but the wall head does not need the largest cover.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003eUse the 635mm to 785mm sizes for broader domestic extensions, rendered parapets and commercial walls where the waterproofing buildup needs more coverage.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003eUse the 810mm to 1060mm sizes for large flat roof perimeter details, schools, apartment blocks, care homes and wide commercial parapets.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003eChoose this 3mm product when the straight coping lengths are also 3mm, because mixing gauges can create visual and fitting differences.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003eCheck the wall measurement after render, insulation and membrane details are included, not just the bare blockwork width.\u003c\/p\u003e\n\u003ch2 class=\"OMSH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eHow to Install \/ How to Fit\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eStart by checking the finished wall width and confirming that the selected upstand matches the 3mm flat coping system being installed. The substrate should be stable, level and ready for the fixing method specified for the project.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eDry fit the upstand before final fixing. Check that the external leg lines through with the straight coping pieces and that the raised end sits tight enough to close the run cleanly without forcing the metal out of line.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eWhere a seal is needed at the joint, use \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e so the joint is protected without leaving a distracting contrast line. Select \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/timber-fasteners-ral\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded timber fasteners\u003c\/span\u003e\u003c\/a\u003e or \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded metal fasteners\u003c\/span\u003e\u003c\/a\u003e to suit the substrate and fixing detail.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eIf the coping upstand meets other roof edge details, check the junction with \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-roof-flashing-3000mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ealuminium roof flashing\u003c\/span\u003e\u003c\/a\u003e, \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/collections\/trims-flashings-angles-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003etrims, flashings and angles\u003c\/span\u003e\u003c\/a\u003e or the \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/collections\/roof-accessories\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eroof accessories\u003c\/span\u003e\u003c\/a\u003e used on the same project. A neat termination only performs properly when the surrounding details are also sealed and aligned.\u003c\/p\u003e\n\u003ch2 class=\"OMSH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eWhere 3mm Aluminium Coping Upstand Is Used\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eWide Commercial Parapets\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThis upstand is well suited to commercial units where a wider parapet needs a strong end closure. It gives the roof edge a finished appearance while helping direct water away from the wall head.\u003c\/p\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eModern Domestic Extensions\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eOn contemporary flat roof extensions, especially around Billericay, Southend and the Home Counties, a narrow exposed edge can spoil the look of the roofline. A colour matched stopend upstand helps the coping finish cleanly against render, brick or cladding.\u003c\/p\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eSchools, Care Homes and Housing Developments\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eFor repeatable project work, matching components reduce the chance of one-off site-made details looking different from plot to plot. This product helps contractors keep roof edge details consistent across multiple elevations.\u003c\/p\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eRefurbishment of Failed Parapet Details\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eIf the original coping end has failed, lifted or started staining the wall below, replacing the detail with a formed aluminium upstand can give a more durable result than patching the end with sealant alone. The \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-coping-case-study\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecoping case study\u003c\/span\u003e\u003c\/a\u003e page can also support trust for higher value coping projects.\u003c\/p\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eExposed Roof Edge Junctions\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eWhere the end of the coping run faces open weather, a raised upstand provides a clearer barrier against wind driven rain. It is especially useful where roof edges meet return walls, parapet breaks or changes in roof geometry.\u003c\/p\u003e\n\u003ch2 class=\"OMSH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eWhat is a coping stopend upstand used for?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eA coping stopend upstand is used to finish the end of a coping run and help stop water being pushed over or into the exposed end of the wall. It gives the roof edge a formed closure rather than leaving a cut coping edge or relying only on sealant.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eWhen should I choose a 75mm external leg?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eChoose a 75mm external leg when the project needs a compact vertical drop on the outside face of the wall. It is useful when the design calls for a slimmer visible edge, but you still need a wide 3mm flat coping profile across the top of the parapet.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eIs a raised upstand better than a closed stopend?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eA raised upstand is better where the end of the run needs extra protection against water overspill or wind driven rain. A closed stopend may be enough for simpler sheltered edges, but the upstand gives a clearer barrier at vulnerable parapet ends.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eHow do I measure for this product?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eMeasure the finished wall width after render, insulation, membrane and any build up have been allowed for. Then select the coping width that gives the correct cover and overhang for the full system, not just the bare masonry size.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eCan the upstand be made in the same colour as the coping?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eYes, the upstand can be powder coated in the selected RAL colour so it matches the straight coping lengths, corners and related accessories. Ordering the full system together is the best way to keep colour and finish consistent.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eDo I still need sealant with a formed upstand?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eYes, sealant is normally still needed at the relevant joints, laps or abutments. The formed upstand gives the end shape, while the sealant helps protect the joint line and reduce the risk of water entry at the connection.\u003c\/p\u003e\n\u003ch2 class=\"OMSH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eComparison Section\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eAluminium Stopend Upstand\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThe aluminium stopend upstand is the best choice when the end of the coping run needs a raised barrier and a neat factory made closure. It is especially useful on exposed parapets, modern rooflines and projects where the roof edge finish is visible from the ground.\u003c\/p\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eClosed Stopend Without Upstand\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eA closed stopend can work well on simpler runs where the end needs closing but does not need the same raised water barrier. It may be the right option on sheltered details or where the design does not call for an upstand at the termination point.\u003c\/p\u003e\n\u003ch3 class=\"OMSH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eSite Cut Sheet and Sealant\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eA site cut closure may be used as a temporary or budget detail, but it rarely looks as clean as a formed product. It can also rely too heavily on sealant, which increases the risk of uneven joints, movement gaps and future maintenance.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFor the strongest result, match this product with the \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ealuminium flat copings\u003c\/span\u003e\u003c\/a\u003e range and order all related ends, corners, fixings and sealant as one system.\u003c\/p\u003e\n\u003ch2 class=\"OMSH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003ePart of a Complete System\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThis upstand should be treated as one part of a complete aluminium coping system rather than a standalone trim. Full system ordering helps the profile, RAL colour and installation detail stay consistent across the whole roof edge.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003eStraight \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ealuminium copings\u003c\/span\u003e\u003c\/a\u003e for the main parapet runs.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003e3mm aluminium flat coping corner\u003c\/span\u003e\u003c\/a\u003e pieces for return details.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eColour coded sealant\u003c\/span\u003e\u003c\/a\u003e for neat, protected joints.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/timber-fasteners-ral\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eColour coded timber fasteners\u003c\/span\u003e\u003c\/a\u003e where the substrate calls for timber fixing.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eColour coded metal fasteners\u003c\/span\u003e\u003c\/a\u003e where the fixing point is metal.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/collections\/trims-flashings-angles-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eTrims, flashings and angles\u003c\/span\u003e\u003c\/a\u003e where the coping meets other roof edge details.\u003c\/p\u003e\n\u003cp class=\"MsoListBullet\" style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-termination-bar-2500mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eAluminium termination bar\u003c\/span\u003e\u003c\/a\u003e where waterproofing needs a secure edge restraint.\u003c\/p\u003e\n\u003ch2 class=\"OMSH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eStandards and Compliance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eFor flat roof projects, the design and detailing should be considered alongside \u003ca href=\"https:\/\/knowledge.bsigroup.com\/products\/flat-roofs-with-continuously-supported-flexible-waterproof-coverings-code-of-practice-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eBS 6229:2025\u003c\/span\u003e\u003c\/a\u003e, which covers flat roofs with continuously supported flexible waterproof coverings. Getting the end of the coping run right helps protect the roof edge, the warranty position and the people using the building.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFor powder coated aluminium used in architectural settings, \u003ca href=\"https:\/\/knowledge.bsigroup.com\/products\/paints-and-varnishes-coating-of-aluminium-and-aluminium-alloys-for-architectural-purposes-coatings-prepared-from-thermosetting-coating-powder\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eBS EN 12206-1:2021\u003c\/span\u003e\u003c\/a\u003e is the relevant coating standard to reference. This is especially useful when specifying colour matched aluminium components for commercial or new build work.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eWhere the project is a new build, school, care home or warranty controlled development, the coping, fixings, sealant and roof waterproofing detail should be checked as a complete assembly rather than treated as separate decorative items.\u003c\/p\u003e","brand":"Online Metal Store Ltd","offers":[{"title":"510mm","offer_id":42314518822996,"sku":"AC3-SU-75-510","price":72.8,"currency_code":"GBP","in_stock":true},{"title":"535mm","offer_id":42314518855764,"sku":"AC3-SU-75-535","price":73.92,"currency_code":"GBP","in_stock":true},{"title":"560mm","offer_id":42314518888532,"sku":"AC3-SU-75-560","price":75.04,"currency_code":"GBP","in_stock":true},{"title":"585mm","offer_id":42314518921300,"sku":"AC3-SU-75-585","price":76.16,"currency_code":"GBP","in_stock":true},{"title":"610mm","offer_id":42314518954068,"sku":"AC3-SU-75-610","price":77.28,"currency_code":"GBP","in_stock":true},{"title":"635mm","offer_id":42314518986836,"sku":"AC3-SU-75-635","price":78.4,"currency_code":"GBP","in_stock":true},{"title":"660mm","offer_id":42314519019604,"sku":"AC3-SU-75-660","price":79.52,"currency_code":"GBP","in_stock":true},{"title":"685mm","offer_id":42314519052372,"sku":"AC3-SU-75-685","price":80.64,"currency_code":"GBP","in_stock":true},{"title":"710mm","offer_id":42314519085140,"sku":"AC3-SU-75-710","price":81.76,"currency_code":"GBP","in_stock":true},{"title":"735mm","offer_id":42314519117908,"sku":"AC3-SU-75-735","price":82.88,"currency_code":"GBP","in_stock":true},{"title":"760mm","offer_id":42314519150676,"sku":"AC3-SU-75-760","price":84.0,"currency_code":"GBP","in_stock":true},{"title":"785mm","offer_id":42314519183444,"sku":"AC3-SU-75-785","price":85.12,"currency_code":"GBP","in_stock":true},{"title":"810mm","offer_id":42314519216212,"sku":"AC3-SU-75-810","price":86.24,"currency_code":"GBP","in_stock":true},{"title":"835mm","offer_id":42314519248980,"sku":"AC3-SU-75-835","price":87.36,"currency_code":"GBP","in_stock":true},{"title":"860mm","offer_id":42314519281748,"sku":"AC3-SU-75-860","price":88.48,"currency_code":"GBP","in_stock":true},{"title":"885mm","offer_id":42314519314516,"sku":"AC3-SU-75-885","price":89.6,"currency_code":"GBP","in_stock":true},{"title":"910mm","offer_id":42314519347284,"sku":"AC3-SU-75-910","price":90.72,"currency_code":"GBP","in_stock":true},{"title":"935mm","offer_id":42314519380052,"sku":"AC3-SU-75-935","price":91.84,"currency_code":"GBP","in_stock":true},{"title":"960mm","offer_id":42314519412820,"sku":"AC3-SU-75-960","price":92.96,"currency_code":"GBP","in_stock":true},{"title":"985mm","offer_id":42314519445588,"sku":"AC3-SU-75-985","price":94.08,"currency_code":"GBP","in_stock":true},{"title":"010mm","offer_id":42314519478356,"sku":"AC3-SU-75-1010","price":95.2,"currency_code":"GBP","in_stock":true},{"title":"1035mm","offer_id":42314519511124,"sku":"AC3-SU-75-1035","price":96.32,"currency_code":"GBP","in_stock":true},{"title":"1060mm","offer_id":42314519543892,"sku":"AC3-SU-75-1060","price":97.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1588\/2580\/files\/Flat_20Coping_20-_20Stopend_20Upstand-6.jpg?v=1774517069"},{"product_id":"aluminium-coping-corner-75mm","title":"3mm Aluminium Flat Coping - 135° Corner | 75mm External Leg","description":"\u003cp class=\"MsoNormal\"\u003eAngled parapet corners are one of those details that look simple until water starts finding the joint. On a wide commercial wall in Chelmsford, Brentwood or East London, a site-cut mitre can leave the most exposed point of the coping system relying on a thin sealant line. Once driving rain, frost cycles and wind lift get involved, that small weak point can turn into damp staining, failed decoration and expensive remedial work.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis 3mm aluminium flat coping 135 corner gives you a proper factory-formed fitting for obtuse external turns. It is built for wider parapets where the 3mm system is the right specification, with a 75mm external leg to keep the roofline neat while still throwing rainwater clear of the wall face.\u003c\/p\u003e\n\u003ch2 class=\"CustomH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe 3mm aluminium flat coping 135 corner from Online Metal Store Ltd is designed to connect two straight coping runs where a parapet turns at an obtuse 135 degree angle. It forms part of the \u003ca rel=\"noopener\" href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ealuminium flat copings\u003c\/span\u003e\u003c\/a\u003e range and is manufactured in Chelmsford, Essex for UK commercial, residential and refurbishment projects.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis product suits the same wide-wall system as the \u003ca rel=\"noopener\" href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003e3mm aluminium flat coping 3m length\u003c\/span\u003e\u003c\/a\u003e. The 3mm gauge gives extra stiffness for larger widths from 510mm to 1060mm, while the 75mm external leg keeps the exposed face compact, clean and consistent across the full parapet line.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eUse this fitting where the wall changes direction wider than a right angle. For standard rectangular corners, specify the \u003ca rel=\"noopener\" href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003e3mm flat coping 90 degree corner\u003c\/span\u003e\u003c\/a\u003e instead. For run terminals, pair the system with matching stopends, fixings and sealant so the whole edge detail works as one complete system.\u003c\/p\u003e\n\u003ch2 class=\"CustomH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eKey Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eFactory-Formed 135 Degree Corner for Cleaner Detailing\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eA factory-formed 135 degree fitting removes the need to cut and join two coping lengths on site across the most vulnerable part of the turn. The result is a cleaner corner, better alignment and fewer opportunities for water to creep into the parapet core. On visible commercial rooflines, that also means a sharper, more professional finish from ground level.\u003c\/p\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003e3mm Aluminium for Wider Parapet Walls\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThe 3mm aluminium gauge is useful where wider wall sizes demand extra rigidity. This product is offered from 510mm through to 1060mm overall width, which places it firmly in the commercial and wide parapet category. It is easier to handle than stone or concrete, but strong enough for exposed roof edge work when installed with the correct bracket system.\u003c\/p\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003e75mm External Leg for a Compact Modern Roofline\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThe 75mm external leg gives the corner a slim architectural face while still covering the outer wall edge and drip detail. That matters on modern buildings where the coping should protect the wall without creating a bulky cap. It works well on contemporary offices, apartment blocks, retail units, schools and larger domestic extensions where clean lines are part of the specification.\u003c\/p\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003ePowder Coated in Any RAL Colour\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThe corner can be powder coated in any RAL colour to match the straight coping lengths, stopends, brackets and surrounding facade details. For projects using anthracite grey, black, white or a specific architect-specified colour, ordering every component together helps keep the colour consistent across the full run.\u003c\/p\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eBetter Suited to UK Weather Than Site-Cut Joints\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eUK parapets deal with driving rain, damp winters, summer expansion and repeat freeze thaw cycles. A purpose-made aluminium corner gives the joint a more controlled starting point than site cutting, especially when used with the correct bracket spacing and sealant. The detail stays neater and the wall below has better protection against water tracking.\u003c\/p\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eManufactured in Chelmsford with Fast UK Supply\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThe product is made to order in Chelmsford, Essex, which supports faster communication and shorter UK supply chains compared with imported systems. For builders and contractors working across Basildon, Braintree, Colchester, Southend, Kent, East London and the wider Home Counties, that gives a practical ordering route for project-specific sizes and colours.\u003c\/p\u003e\n\u003ch2 class=\"CustomH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eProduct Name: \u003c\/b\u003e3mm Aluminium Flat Coping - 135° Corner | 75mm External Leg\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eMaterial: \u003c\/b\u003e3mm architectural-grade aluminium\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eProfile: \u003c\/b\u003eFlat coping corner\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eCorner Angle: \u003c\/b\u003e135 degree external corner for obtuse parapet turns\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eExternal Leg: \u003c\/b\u003e75mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eSize Options: \u003c\/b\u003e510mm, 535mm, 560mm, 585mm, 610mm, 635mm, 660mm, 685mm, 710mm, 735mm, 760mm, 785mm, 810mm, 835mm, 860mm, 885mm, 910mm, 935mm, 960mm, 985mm, 1010mm, 1035mm, 1060mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eFinish: \u003c\/b\u003ePolyester powder coated finish\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eColour: \u003c\/b\u003eAny RAL colour to order\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003ePrice Shown on Page: \u003c\/b\u003eFrom £97.20 ex VAT and £116.64 inc VAT\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eCompatible System: \u003c\/b\u003e3mm aluminium flat coping system with 75mm external leg\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eFixing Method: \u003c\/b\u003eConcealed bracket system, bracket specification to match 3mm flat coping\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eManufacturing Location: \u003c\/b\u003eChelmsford, Essex, United Kingdom\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eOrdering Note: \u003c\/b\u003eCustom fabricated to the selected size and finish, so measurements should be checked before ordering\u003c\/p\u003e\n\u003ch2 class=\"CustomH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eChoosing the Right Size \/ Width \/ Thickness\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe size selector refers to the overall coping width, not the corner length around the parapet. Measure the finished wall width at the top of the parapet, including any build-up, insulation, render or plywood carrier that the coping must cover.\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003eUse the 3mm system where the selected overall width is 510mm or above, or where the specification calls for extra rigidity on a wide or exposed parapet.\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003eChoose the 75mm external leg where you want a compact face detail on both sides of the wall, rather than a deeper downstand.\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003eFor commercial units, schools, care homes and apartment blocks, keep all straight lengths, corners, stopends and T-junctions in the same 3mm system.\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003eIf a wall turns at 90 degrees, use the matching right-angle corner instead of this 135 degree fitting.\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003eIf the measured width falls between two listed sizes, move up to the next available size so the coping is not too tight over the wall build-up.\u003c\/p\u003e\n\u003ch2 class=\"CustomH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eHow to Install \/ How to Fit\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eSet out the parapet run before fixing the corner. Mark the position of each straight length, the 135 degree turn and the adjoining joints. Use the correct 3mm coping brackets for the system and keep bracket centres tight around the corner so the fitting is fully supported at the angle.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eDry fit the corner before sealing. Check that the external leg sits square to both wall faces and that the adjoining \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003e3mm flat coping lengths\u003c\/span\u003e\u003c\/a\u003e line through without forcing the profile. Allow a controlled expansion gap at each adjoining joint rather than pushing the metal tight.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eApply \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e to the joint faces and keep the bead continuous. The sealant should work with the bracket system and the factory-formed corner, not as a substitute for either. Use matching \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded metal fasteners\u003c\/span\u003e\u003c\/a\u003e where the fixing detail calls for exposed or secured components.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOnce fitted, check the corner line from both roof level and ground level. Make sure the coping sits flat, the drip return clears the wall face, and any adjoining \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping-closed-stopend-75mm-leg\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eclosed stopend\u003c\/span\u003e\u003c\/a\u003e or \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-upstand-75mm-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003estopend upstand\u003c\/span\u003e\u003c\/a\u003e is sealed into the same system.\u003c\/p\u003e\n\u003ch2 class=\"CustomH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eWhere 3mm Aluminium Flat Coping 135 Corners Are Used\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eCommercial Parapets with Angled Facades\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eMany commercial buildings do not follow a simple rectangular footprint. Office entrances, retail frontages and mixed-use developments often include angled elevations where the parapet turns wider than 90 degrees. This corner keeps the coping run continuous through that change of direction.\u003c\/p\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eWide Flat Roof Extensions and Contemporary Homes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eLarger domestic projects in Chelmsford, Brentwood and the South East often use wide insulated parapets to create a modern flat roof edge. Where the wall layout includes an obtuse corner, this fitting gives a neater result than trying to cut two straight lengths on site.\u003c\/p\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eSchools, Care Homes and Public Sector Buildings\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003ePublic sector and care sector buildings need predictable details that can be repeated across several roof areas. A 3mm corner helps create a consistent specification where wide parapets, colour matching and long-term durability matter.\u003c\/p\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eCommercial Refurbishment Projects\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eWhen old coping is being replaced on a commercial roof, matching the gauge and profile is important. If the existing system or new design calls for 3mm flat coping, the corners, \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-t-junction\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eT-junctions\u003c\/span\u003e\u003c\/a\u003e and stopends should all match so the finished edge is uniform.\u003c\/p\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eExposed Rooflines Near Coastal or Open Sites\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eBuildings around Southend, Kent and exposed parts of the South East face wind-driven rain and salt-laden air. Aluminium with a suitable powder coated finish gives a durable solution, while the 3mm gauge supports better rigidity on wider wall caps.\u003c\/p\u003e\n\u003ch2 class=\"CustomH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eWhat is a 3mm aluminium flat coping 135 corner used for?\u003c\/span\u003e\u003c\/b\u003e It is used where a flat parapet wall changes direction at a 135 degree external angle. The corner joins two straight coping runs while keeping the roof edge protected, aligned and colour matched.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eDo I need this corner or a 90 degree version?\u003c\/span\u003e\u003c\/b\u003e Use this 135 degree corner when the wall turns at an obtuse angle, wider than a right angle. Use the 90 degree corner where two wall faces meet squarely, such as on a standard rectangular flat roof.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eCan I use this with 2mm flat coping lengths?\u003c\/span\u003e\u003c\/b\u003e No. This is a 3mm fitting and should be used with the matching 3mm flat coping system. Mixing 2mm and 3mm components can create profile mismatch, uneven joints and a poor finished line.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eHow do I choose the correct size?\u003c\/span\u003e\u003c\/b\u003e Measure the finished parapet width at the top of the wall, including the full build-up. Then choose the closest suitable overall coping size from 510mm to 1060mm, moving up if your measurement falls between sizes.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eDoes the 75mm external leg suit commercial buildings?\u003c\/span\u003e\u003c\/b\u003e Yes, the 75mm leg is suitable where a slimmer external face is preferred. For wider commercial parapets, the key factor is not just leg depth, but using the correct 3mm gauge, bracket support, joint seal and full system match.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003e\u003cspan style=\"font-size: 11.5pt; mso-bidi-font-size: 11.0pt; color: #2c3e50;\"\u003eIs sealant still required with a factory-formed corner?\u003c\/span\u003e\u003c\/b\u003e Yes. The factory-formed corner improves the shape and alignment, but the joints where it meets straight lengths still need proper sealing. Use compatible colour coded sealant and follow the installation detail for expansion gaps and waterproofing.\u003c\/p\u003e\n\u003ch2 class=\"CustomH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eComparison Section\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003e3mm Aluminium Flat Coping Corner\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThis is the right option for wide parapet walls, commercial specifications and exposed projects where extra stiffness is needed. It keeps the profile lightweight compared with stone, but gives more rigidity than a thinner domestic-grade metal coping component.\u003c\/p\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003e2mm Aluminium Flat Coping Corner\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eA 2mm corner can be suitable for narrower domestic parapets and smaller roof edge details. It should not be mixed into a 3mm system because the profile and stiffness will not match. Choose the same gauge across the whole coping run.\u003c\/p\u003e\n\u003ch3 class=\"CustomH3\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eStone, Concrete or Lead Corners\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eStone and concrete still have a role on heritage or traditional projects, especially where the planning context expects that appearance. Lead can still be required on listed buildings, but it needs skilled detailing. For most modern commercial parapets, powder coated aluminium gives a lighter, cleaner and easier-to-match system.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFor the wider range of lengths, corners and stopends, browse the \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ealuminium copings\u003c\/span\u003e\u003c\/a\u003e collection or the focused \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ealuminium flat copings\u003c\/span\u003e\u003c\/a\u003e page.\u003c\/p\u003e\n\u003ch2 class=\"CustomH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003ePart of a Complete System\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThis product should be ordered as part of a matched 3mm flat coping system rather than treated as a stand-alone item. That protects the visual finish, the colour consistency and the installation quality.\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003e3mm flat coping 3m length\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003e3mm flat coping 90 degree corner\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003e3mm flat coping 135 degree corner\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping-closed-stopend-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003e3mm flat coping closed stopend\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-upstand-75mm-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003e3mm flat coping stopend upstand\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-t-junction\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003e3mm flat coping T-junction\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded sealant 300ml\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/timber-fasteners-ral\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded timber fasteners\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded metal fasteners\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"margin-left: .25in; mso-add-space: auto; text-indent: -.25in; mso-list: l0 level1 lfo1; tab-stops: list .25in;\" class=\"MsoListBullet\"\u003e\u003c!-- [if !supportLists]--\u003e\u003cspan style=\"font-family: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol;\"\u003e\u003cspan style=\"mso-list: Ignore;\"\u003e·\u003cspan style=\"font: 7.0pt 'Times New Roman';\"\u003e         \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--[endif]--\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/collections\/trims-flashings-angles-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003etrims, flashings and angles\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 class=\"CustomH2\"\u003e\u003cspan style=\"font-size: 11.0pt;\"\u003eStandards and Compliance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eFlat roof parapet details should be considered alongside \u003ca href=\"https:\/\/knowledge.bsigroup.com\/products\/flat-roofs-with-continuously-supported-flexible-waterproof-coverings-code-of-practice-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eBS 6229:2025\u003c\/span\u003e\u003c\/a\u003e, which covers flat roofs with continuously supported flexible waterproof coverings. Correct coping, edge protection and joint detailing all contribute to the wider weatherproofing strategy.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe powder coated aluminium finish should be specified with reference to \u003ca href=\"https:\/\/knowledge.bsigroup.com\/products\/paints-and-varnishes-coating-of-aluminium-and-aluminium-alloys-for-architectural-purposes-coatings-prepared-from-thermosetting-coating-powder\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eBS EN 12206-1:2021\u003c\/span\u003e\u003c\/a\u003e for coating aluminium and aluminium alloys for architectural purposes using thermosetting coating powder.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFor NHBC-registered new-build projects, the coping detail should also be checked against the project specification, warranty provider guidance and any architect or structural engineer requirements. Getting this right protects the warranty, the building and the people inside it.\u003c\/p\u003e","brand":"Online Metal Store Ltd","offers":[{"title":"510mm","offer_id":42314519609428,"sku":"AC3-135-75-510","price":97.2,"currency_code":"GBP","in_stock":true},{"title":"535mm","offer_id":42314519642196,"sku":"AC3-135-75-535","price":102.6,"currency_code":"GBP","in_stock":true},{"title":"560mm","offer_id":42314519674964,"sku":"AC3-135-75-560","price":108.0,"currency_code":"GBP","in_stock":true},{"title":"585mm","offer_id":42314519707732,"sku":"AC3-135-75-585","price":113.4,"currency_code":"GBP","in_stock":true},{"title":"610mm","offer_id":42314519740500,"sku":"AC3-135-75-610","price":118.8,"currency_code":"GBP","in_stock":true},{"title":"635mm","offer_id":42314519773268,"sku":"AC3-135-75-635","price":124.2,"currency_code":"GBP","in_stock":true},{"title":"660mm","offer_id":42314519806036,"sku":"AC3-135-75-660","price":129.6,"currency_code":"GBP","in_stock":true},{"title":"685mm","offer_id":42314519838804,"sku":"AC3-135-75-685","price":135.0,"currency_code":"GBP","in_stock":true},{"title":"710mm","offer_id":42314519871572,"sku":"AC3-135-75-710","price":140.4,"currency_code":"GBP","in_stock":true},{"title":"735mm","offer_id":42314519904340,"sku":"AC3-135-75-735","price":145.8,"currency_code":"GBP","in_stock":true},{"title":"760mm","offer_id":42314519937108,"sku":"AC3-135-75-760","price":151.2,"currency_code":"GBP","in_stock":true},{"title":"785mm","offer_id":42314519969876,"sku":"AC3-135-75-785","price":156.6,"currency_code":"GBP","in_stock":true},{"title":"810mm","offer_id":42314520002644,"sku":"AC3-135-75-810","price":162.0,"currency_code":"GBP","in_stock":true},{"title":"835mm","offer_id":42314520035412,"sku":"AC3-135-75-835","price":167.4,"currency_code":"GBP","in_stock":true},{"title":"860mm","offer_id":42314520068180,"sku":"AC3-135-75-860","price":172.8,"currency_code":"GBP","in_stock":true},{"title":"885mm","offer_id":42314520100948,"sku":"AC3-135-75-885","price":178.2,"currency_code":"GBP","in_stock":true},{"title":"910mm","offer_id":42314520133716,"sku":"AC3-135-75-910","price":183.6,"currency_code":"GBP","in_stock":true},{"title":"935mm","offer_id":42314520166484,"sku":"AC3-135-75-935","price":189.0,"currency_code":"GBP","in_stock":true},{"title":"960mm","offer_id":42314520199252,"sku":"AC3-135-75-960","price":194.4,"currency_code":"GBP","in_stock":true},{"title":"985mm","offer_id":42314520232020,"sku":"AC3-135-75-985","price":199.8,"currency_code":"GBP","in_stock":true},{"title":"1010mm","offer_id":42314520264788,"sku":"AC3-135-75-1010","price":205.2,"currency_code":"GBP","in_stock":true},{"title":"1035mm","offer_id":42314520297556,"sku":"AC3-135-75-1035","price":210.6,"currency_code":"GBP","in_stock":true},{"title":"1060mm","offer_id":42314520330324,"sku":"AC3-135-75-1060","price":216.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1588\/2580\/files\/Flat_20Coping_20-_20135-Degree_20Corner.jpg?v=1774517071"},{"product_id":"3mm-aluminium-flat-coping","title":"3mm Aluminium Flat Coping – 3m Length | 75mm External Leg","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis is the primary run length in the 3mm aluminium flat coping range. Supplied in 3-metre sections with a 75mm external leg on each side, it covers long commercial parapet runs with the minimum number of joints and the rigidity that commercial and exposed-site specifications require. Available in 23 width sizes from 510mm to 1060mm, powder coated in any RAL colour, and fabricated to order at our \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/about-us\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eChelmsford facility in Essex\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe flat top surface gives a clean, horizontal profile at parapet level. On commercial offices, retail units, contemporary apartment buildings and NHBC-registered housing developments where a minimal parapet line is part of the specification, flat coping is the standard choice. It relies on the external leg drip detail and correctly sealed joints for weathertightness rather than a built-in surface slope. For projects where positive surface drainage is preferred, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm sloping coping range\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e provides the alternative profile in the same gauge.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAt 3mm, this section is built for the long term. Commercial parapets face sustained wind loading at height, repeated thermal cycling and the full force of UK weather on exposed faces. The 3mm gauge is stiffer across its profile than the domestic 2mm equivalent, resisting deformation and wind uplift forces more effectively over a 25 to 30 year commercial service life. On a project where the coping is expected to perform without intervention for decades, getting the gauge right from the outset is the correct decision.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eHeavy commercial gauge: \u003c\/span\u003e\u003cspan\u003e3mm aluminium is the correct specification for commercial buildings, exposed sites, elevated parapets and NHBC-registered new-build housing. Stiffer and more resistant to wind peel than 2mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFewer joints on long runs: \u003c\/span\u003e\u003cspan\u003ea 3m section reduces joint count to the practical minimum. On a 12m parapet face, four 3m sections give three joints. Fewer joints means less sealant, fewer maintenance points and a cleaner installed line.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eClean flat profile: \u003c\/span\u003e\u003cspan\u003ehorizontal at parapet level, suited to commercial and contemporary architecture where a minimalist coping line is specified. Consistent shadow line along the full parapet perimeter.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e23 commercial width sizes: \u003c\/span\u003e\u003cspan\u003e510mm to 1060mm covers cavity wall commercial parapets from approximately 340mm to 890mm wide. If your size is below 510mm, the 2mm flat coping system is likely the right product.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eAny RAL colour: \u003c\/span\u003e\u003cspan\u003eexternal grade polyester powder coat to any RAL specification. Order all system components in the same RAL for batch-consistent colour across lengths, corners, stopends and brackets.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eConcealed fixing: \u003c\/span\u003e\u003cspan\u003ethe 5mm bracket is fixed to the wall before the coping is installed. No fastener penetrates the face or top surface of the installed section.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eMade to order in Chelmsford: \u003c\/span\u003e\u003cspan\u003efabricated to the width and colour you specify at our Essex facility. Short UK lead times.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMaterial: \u003c\/strong\u003e\u003cspan\u003e3mm grade aluminium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eProfile: \u003c\/strong\u003e\u003cspan\u003eFlat coping\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eLength:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e3m (3000mm)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eExternal Leg: \u003c\/strong\u003e\u003cspan\u003e75mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eInternal Leg:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e75mm (equal both sides)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSizes Available: \u003c\/strong\u003e\u003cspan\u003e510mm, 535mm, 560mm, 585mm, 610mm, 635mm, 660mm, 685mm, 710mm, 735mm, 760mm, 785mm, 810mm, 835mm, 860mm, 885mm, 910mm, 935mm, 960mm, 985mm, 1010mm, 1035mm, 1060mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eSize Definition:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eOverall WIDTH of the coping profile (external leg tip to internal leg tip) -- NOT the run length\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSizing Formula: \u003c\/strong\u003e\u003cspan\u003eWall width + 170mm = size to order\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eWall Width Range:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eApproximately 340mm to 890mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFinish: \u003c\/strong\u003e\u003cspan\u003ePolyester powder coating, external grade\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eColour:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eAny RAL colour to order\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFixing Bracket: \u003c\/strong\u003e\u003cspan\u003e5mm Aluminium Coping Bracket (required for all 3mm flat coping)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFabrication: \u003c\/strong\u003e\u003cspan\u003eMade to order -- non-returnable unless faulty\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCountry of Origin: \u003c\/strong\u003e\u003cspan\u003eUnited Kingdom (Chelmsford, Essex)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eHow to Measure: Getting the Size Right\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe most important step before ordering. The 23 sizes refer to the coping WIDTH, not the run length. Every section on this page is 3m long. The size must match the overall girth of your parapet wall.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eFormula: wall width + 170mm = the size to order.\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMeasure the wall width at the top of the parapet from outside face to inside face. Add 75mm for the external leg, 75mm for the internal leg, and 10mm for each return (20mm total). That gives wall width + 170mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e340mm wide wall: 340 + 170 = 510mm (smallest available size)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e440mm wide wall: 440 + 170 = 610mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e615mm wide wall: 615 + 170 = 785mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e890mm wide wall: 890 + 170 = 1060mm (largest available size)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eIf the result falls between two available sizes, always select the next size up. If it falls below 510mm, the parapet wall is likely in the domestic range and the 2mm flat coping system may be more appropriate.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhere This Product Is Used\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCommercial Flat Roof Parapets\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe primary market for 3mm flat coping. Commercial buildings with perimeter parapets, including offices, retail units, healthcare facilities, warehouses and light industrial buildings across Essex, East London and the South East. On a commercial building with a 24m parapet perimeter, eight 3m sections cover the full run with seven joints and no waste. Use \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2m sections\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e for medium parapet faces between 2m and 5m, and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e1m sections\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e for short returns and final infill pieces.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eNHBC New-Build Housing Developments\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn NHBC-registered residential developments where the house type specification calls for 3mm flat coping on cavity wall parapets, the 3m section is the primary order length per plot or development phase. Ordering the full system from a single manufacturer, including the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm brackets\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e90 degree corners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eclosed stopends\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, gives a colour-matched, single-source specification that supports the warranty position on completion.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eExposed and Coastal Site Parapets\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBuildings near the Essex and Kent coastline, on hilltop sites, or where wind loading calculations place the site in an exposed category require 3mm specification throughout. The 3m section in 3mm gauge gives maximum joint reduction while meeting the commercial specification. Reduce \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e centres to 750mm on exposed sites rather than the standard 1000mm maximum.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCommercial Refurbishment and Replacement\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhen existing 3mm flat coping on a commercial building has failed, the replacement must be 3mm. A 2mm replacement is under-specified for the site conditions that required 3mm in the first place, and creates a profile mismatch at every junction. Order the 3m replacement sections alongside the matching \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecorners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, stopends and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm brackets\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e from Chelmsford for consistent profile and colour across the repaired section.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eInstallation Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMark out the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e positions along the full parapet run before fixing anything. This is the correct bracket for all 3mm flat coping: do not substitute the 4mm bracket, which is for 2mm coping only. Fix brackets at maximum 1000mm centres, with one within 150-200mm of every run terminal, corner junction and stopend position. A 3m section needs a minimum of four brackets. On exposed sites, reduce to 750mm centres or follow the structural engineer's specification where wind loading has been calculated.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePress the 3m flat coping sections onto the brackets from the fixed terminal end of the run. Before butting each section up to the previous one, apply a continuous bead of \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the matching RAL to the internal face of the joint. The sealant bead at each joint is the primary weathertight seal between adjacent sections. Keep it continuous. On a long commercial run, work systematically along the parapet and do not skip ahead of the sealant.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eLock the coping to the brackets using \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded metal fasteners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the matching RAL. Fit the appropriate \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm 90 degree corner pieces\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e at every change of direction and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eclosed stopends\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e at every run terminal. Apply a neat finishing sealant bead on all external joint faces. For mixed-level parapets with T-junctions, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-t-junction\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm T-junction piece\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is available from the same range.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAllow normal expansion gaps at joints according to the BS 6229 detailing requirements for the site conditions. On a long commercial run in full sun exposure, thermal movement in summer months is real and the sealant joint must be able to accommodate it.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhy Aluminium Flat Coping Over the Alternatives\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eVersus uPVC\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003euPVC becomes brittle with age, fades in UV, and has a shorter service life on exposed commercial parapets. Aluminium does not degrade under UV, holds its powder coat colour for decades, and does not become brittle in cold weather. On a commercial building where the coping is expected to last the life of the flat roof, aluminium is the correct long-term choice.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eVersus Lead\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eLead has been used on parapets for centuries but is heavy, expensive, and requires skilled installation to avoid cracking at folds and joints over time. Aluminium flat coping is lighter, faster to install, consistently dimensioned, and available in any RAL colour for a modern finish. On most commercial projects, aluminium is now the standard specification where lead was once used.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eVersus Concrete or Stone\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eConcrete and stone copings are heavy, require separate mortar bedding, and can crack under freeze-thaw stress at joints. Aluminium is dimensionally consistent, lightweight, and installed with a concealed bracket system that allows controlled thermal movement. There are no mortar joints to open, no stone to crack, and no repointing requirement over the service life.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhy Choose Online Metal Store Ltd\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWe manufacture all our aluminium coping systems at Highlands Farm, Southend Road, Chelmsford, CM3 8EB. Every section, corner and stopend in the 3mm flat coping range is fabricated and powder coated at this facility, which means short lead times for projects across Essex, East London, the South East and the wider UK. There are no intermediaries and no imported stock: what we quote is what we make, and we make it to the specification you provide. If you have questions about any aspect of the system, our team is available on \u003c\/span\u003e\u003cstrong\u003esales@onlinemetalstore.co.uk\u003c\/strong\u003e\u003cspan\u003e or by phone at\u003cstrong\u003e +44 7907 239290\u003c\/strong\u003e, Monday to Saturday from 6:30am to 4:30pm.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBespoke sizing is standard, not an extra. Every section is made to the width you specify. Powder coating is available in any RAL colour, and when you order all system components together (lengths, corners, stopends, brackets) in the same RAL at the same time, they are coated in the same batch and arrive colour-matched. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/collections\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003efull 3mm flat coping system\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is available from this page, and the complete \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium flat copings range\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e covers both 2mm and 3mm systems with the same manufacturing and ordering process throughout.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eComplete the System\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis 3m section is the primary run length in the 3mm flat coping system with a 75mm external leg. For medium parapet faces and infill positions, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping 2m length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping 1m length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e are available in the same sizes, gauge and colour range. A complete installation also requires:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Flat Coping 90 Degree Corner\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e -- for every right-angle change of direction\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Flat Coping 135 Degree Corner\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e -- for obtuse-angle changes of direction\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Flat Coping Closed Stopend\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e -- for every run terminal end\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-upstand-75mm-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Flat Coping Stopend Upstand\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e -- for upstand terminal details\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-t-junction\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Flat Coping T-Junction\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e -- for parapet run intersections\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm Aluminium Coping Bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e -- the correct bracket for all 3mm flat coping\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Sealant 300ml\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e -- required at every joint in the run\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Metal Fasteners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e -- for locking coping to brackets on commercial substrates\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor the full overview of all aluminium coping systems stocked and manufactured, including the 2mm flat coping range and the complete sloping coping systems in both 2mm and 3mm, visit the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eAluminium Copings overview page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. To see a completed coping installation on a live UK project, read the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-coping-case-study\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium coping case study\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhen should I use 3mm flat coping instead of 2mm?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUse 3mm when the project is commercial, when the parapet wall width produces a coping girth of 510mm or above, when the NHBC specification or structural engineer's notes require 3mm, or when the building is on an exposed site or at two or more storeys. For standard domestic extensions, garages and outbuildings in sheltered settings where the coping girth falls below 510mm, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm flat coping system\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is normally the correct choice.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat is the difference between flat and sloping aluminium coping?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFlat coping has a level top surface that sits horizontally on the parapet, giving a clean horizontal profile at building level. Sloping coping has a built-in slope that tilts toward the external face and actively drains rainwater off the surface. Flat coping relies on correctly sealed joints and the external leg drip detail for weathertightness. Sloping coping adds surface drainage on top of that. Both systems use the same concealed bracket fixing method. For 3mm sloping coping, see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm sloping coping range\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eHow many 3m sections do I need?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWork out the total linear metres of each straight parapet face separately. Divide by 3 and round up to get the 3m section count for that face. A 12m face needs four sections. A 10m face needs three 3m sections plus a \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e1m infill section\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e rather than a fourth full 3m section. Add up the section counts across all faces. Corner pieces and stopends are counted per corner and per run terminal, not per linear metre.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat bracket do I need, and how many per section?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\"\u003e\u003cspan\u003e5mm aluminium coping bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is the correct bracket for all 3mm flat coping. Do not use the 4mm bracket, which is specified for 2mm flat coping only. For a 3m section, you need a minimum of four brackets: one near each end and two intermediates at approximately 1000mm centres. On exposed sites or elevated buildings, reduce to 750mm centres or follow the structural engineer's specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eIs this product anodised or powder coated?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePowder coated only. The finish is an external grade polyester powder coat available in any RAL colour. These products are not anodised. Any reference to anodising on the current product page is a factual error. Powder coating is the only available finish across the entire Online Metal Store Ltd 3mm flat coping range.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eCan 3mm flat coping sections be cut to length on site?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes. Aluminium cuts cleanly with a fine-toothed hacksaw, a metal-cutting circular saw blade, or an angle grinder with an aluminium-rated cutting disc. Cut square to the profile and deburr the cut edge. Fit a closed stopend at any cut end that forms a run terminal rather than leaving the cut aluminium face exposed. Bear in mind that sections cut on site cannot be returned, so measure carefully before cutting.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat is the expected service life?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eA correctly installed 3mm aluminium flat coping system with properly sealed joints and correctly specified 5mm brackets can be expected to perform for 25 to 30 years on a commercial building. Aluminium does not rust, does not rot, and the external grade powder coat does not fade significantly over this period. Periodic inspection of the sealant at joints is the main maintenance requirement: the aluminium itself requires no treatment.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eReady to Order or Need Some Advice?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSelect your size from the dropdown above, choose your RAL colour, and add to basket. If you need help with sizing, want to discuss a full system order across multiple lengths and accessories, or have a project-specific question, contact us directly. Our team is available Monday to Saturday, 6:30am to 4:30pm, at \u003c\/span\u003e\u003ca href=\"mailto:sales@onlinemetalstore.co.uk\"\u003e\u003cspan\u003esales@onlinemetalstore.co.uk\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e or on +44 7907 239290. We can confirm the correct width size from your wall dimensions, advise on section mix for your run layout, and quote for the complete system including corners, stopends and brackets in your chosen RAL colour.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAll sections are made to order at our Chelmsford facility with short UK lead times. \u003c\/span\u003e\u003ca href=\"https:\/\/bf79482825.clvaw-cdnwnd.com\/609d0446d2852336dd8714c314ed9e37\/200000409-2d1412d144\/Online%20Metal%20Store%20Colour%20Chart-59.pdf?ph=bf79482825\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eDownload our colour chart\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e for the full RAL range, or call us if you need to match an existing colour on site.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cb id=\"docs-internal-guid-5e4de7a7-7fff-7267-13bd-8c82290c761b\"\u003e\u003c\/b\u003eCustom Fabricated Item: This is a made-to-order product. Please check your measurements carefully before ordering. Non-returnable unless faulty. See our \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/returns-policy\"\u003eRefund and Returns Policy\u003c\/a\u003e for full details.\u003c\/p\u003e","brand":"Online Metal Store Ltd","offers":[{"title":"510mm","offer_id":42314539532372,"sku":"AC3-3M-75-510","price":169.2,"currency_code":"GBP","in_stock":true},{"title":"535mm","offer_id":42314539565140,"sku":"AC3-3M-75-535","price":177.01,"currency_code":"GBP","in_stock":true},{"title":"560mm","offer_id":42314539597908,"sku":"AC3-3M-75-560","price":184.82,"currency_code":"GBP","in_stock":true},{"title":"585mm","offer_id":42314539630676,"sku":"AC3-3M-75-585","price":192.64,"currency_code":"GBP","in_stock":true},{"title":"610mm","offer_id":42314539663444,"sku":"AC3-3M-75-610","price":200.45,"currency_code":"GBP","in_stock":true},{"title":"635mm","offer_id":42314539696212,"sku":"AC3-3M-75-635","price":208.26,"currency_code":"GBP","in_stock":true},{"title":"660mm","offer_id":42314539728980,"sku":"AC3-3M-75-660","price":216.07,"currency_code":"GBP","in_stock":true},{"title":"685mm","offer_id":42314539761748,"sku":"AC3-3M-75-685","price":223.88,"currency_code":"GBP","in_stock":true},{"title":"710mm","offer_id":42314539794516,"sku":"AC3-3M-75-710","price":231.7,"currency_code":"GBP","in_stock":true},{"title":"735mm","offer_id":42314539827284,"sku":"AC3-3M-75-735","price":239.51,"currency_code":"GBP","in_stock":true},{"title":"760mm","offer_id":42314539860052,"sku":"AC3-3M-75-760","price":247.32,"currency_code":"GBP","in_stock":true},{"title":"785mm","offer_id":42314539892820,"sku":"AC3-3M-75-785","price":255.13,"currency_code":"GBP","in_stock":true},{"title":"810mm","offer_id":42314539925588,"sku":"AC3-3M-75-810","price":262.94,"currency_code":"GBP","in_stock":true},{"title":"835mm","offer_id":42314539958356,"sku":"AC3-3M-75-835","price":270.76,"currency_code":"GBP","in_stock":true},{"title":"860mm","offer_id":42314539991124,"sku":"AC3-3M-75-860","price":278.57,"currency_code":"GBP","in_stock":true},{"title":"885mm","offer_id":42314540023892,"sku":"AC3-3M-75-885","price":286.38,"currency_code":"GBP","in_stock":true},{"title":"910mm","offer_id":42314540056660,"sku":"AC3-3M-75-910","price":294.19,"currency_code":"GBP","in_stock":true},{"title":"935mm","offer_id":42314540089428,"sku":"AC3-3M-75-935","price":302.0,"currency_code":"GBP","in_stock":true},{"title":"960mm","offer_id":42314540122196,"sku":"AC3-3M-75-960","price":309.82,"currency_code":"GBP","in_stock":true},{"title":"985mm","offer_id":42314540154964,"sku":"AC3-3M-75-985","price":317.63,"currency_code":"GBP","in_stock":true},{"title":"1010mm","offer_id":42314540187732,"sku":"AC3-3M-75-1010","price":325.44,"currency_code":"GBP","in_stock":true},{"title":"1035mm","offer_id":42314540220500,"sku":"AC3-3M-75-1035","price":333.25,"currency_code":"GBP","in_stock":true},{"title":"1060mm","offer_id":42314540253268,"sku":"AC3-3M-75-1060","price":341.06,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1588\/2580\/files\/aluminium-flat-coping-3m-length.png?v=1774517112"},{"product_id":"3mm-aluminium-coping-1m-75mm-leg","title":"3mm Aluminium Flat Coping – 1m Length | 75mm External Leg","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn most commercial parapet runs, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\"\u003e\u003cspan\u003e3m section\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is the primary choice and the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\"\u003e\u003cspan\u003e2m section\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e handles medium faces. The 1m section comes into its own in the situations where neither works cleanly: the final infill at the end of a longer run that falls short of 2m, a plant room enclosure with short return walls, a step parapet detail where a 3m or 2m section would either overshoot or waste significant material, and tight-access positions at height on a commercial building where manoeuvring a full 2m or 3m aluminium section is genuinely difficult. On a 22m commercial parapet that divides into seven 3m sections with 1m remaining, the 1m section is the correct final piece. Ordering an eighth 3m section and cutting 2m of waste on a non-returnable made-to-order product is not the right approach.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis is the 3mm aluminium flat coping in a 1m length with a 75mm external leg. It is the short infill section in the commercial 3mm flat coping system from Online Metal Store Ltd, manufactured at the Chelmsford facility in Essex. Available powder coated in any RAL colour, in 23 commercial width sizes from 510mm to 1060mm, made to order and non-returnable unless faulty.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhen the 1m Section Is the Right Choice\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eFinal Infill on Long Commercial Runs\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe most common application for a 1m flat coping section is as the final piece at the end of a longer commercial parapet run. On a 19m run, six \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\"\u003e\u003cspan\u003e3m sections\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e give 18m with 1m remaining. A 1m section closes out the run with one additional joint and no waste from a larger section. This is the correct planning approach on a made-to-order product at this price point: match the sections to the run length rather than ordering a larger section and cutting.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eShort Commercial Parapet Details\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCommercial buildings produce short parapet sections in places that domestic projects rarely do: plant room enclosures, lift shaft cap parapets, service duct covers, step parapet transitions, and return walls on complex plan forms. These sections are often between 600mm and 1500mm long. A 1m section serves all of them, either as a cut section for shorter positions or as a full-length piece for positions near 1m. On a building where these short details appear at multiple points, keeping 1m sections on the order simplifies the cut schedule on site.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eTight-Access Positions at Height\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn commercial parapets at first-floor level or above, installing a 3m or 2m aluminium section in a tight access position can be difficult without assistance. A 1m section is lighter and more manageable in situations where the working platform is restricted, an adjacent structure limits the length that can be presented to the wall, or where an overhead obstruction prevents a longer section being lowered into position. Using 1m sections only in these positions, rather than across the whole installation, keeps joint count as low as possible while addressing the practical constraint.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eComplex Parapet Plans with Multiple Short Sections\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCommercial buildings with irregular plan forms, projecting elements and multiple re-entrant corners often produce parapet runs that include several short sections alongside the main straight runs. A mixed order of \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\"\u003e\u003cspan\u003e3m primary lengths\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\"\u003e\u003cspan\u003e2m infill sections\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and 1m pieces covers the full range of face lengths on these buildings efficiently. Planning the section mix before ordering, rather than defaulting to one length for everything, minimises both waste and joint count.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis 1m section is part of the Online Metal Store Ltd 3mm aluminium flat coping system with a 75mm external leg, fabricated at the Chelmsford facility. The flat top surface gives a clean, horizontal profile at parapet level: the standard choice for commercial buildings, contemporary office and retail architecture, and modern residential projects where a minimalist parapet line is specified. At 3mm gauge, the section has greater cross-sectional rigidity than the 2mm domestic equivalent, providing better resistance to wind uplift forces and longer fatigue life on commercial and exposed-site parapets. The 75mm external leg and 75mm internal leg give equal overhang on both faces of the wall, which is the standard profile for flat coping on straightforward commercial parapets. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\"\u003e\u003cspan\u003e5mm aluminium coping bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is the correct concealed fixing bracket for this 3mm system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 1m section is compatible with all accessories in the 3mm 75mm flat coping system: the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\"\u003e\u003cspan\u003e2m section\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\"\u003e\u003cspan\u003e3m section\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the same profile, all corner types, closed stopends, stopend upstands, the T-junction and the 5mm bracket. No component from the 2mm system can be substituted here. The profiles look similar but the wall thickness differs, and the dimensional interface between a 2mm accessory and a 3mm section will not be flush.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eMinimises Waste on Non-Returnable Made-to-Order Coping\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn a commercial project where 3mm flat coping sections are ordered at this price, waste from oversized sections cut down on site adds up quickly across a full perimeter order. Ordering a 1m section for a 1m infill position rather than cutting from a 2m or 3m section is straightforward cost management. It also means any offcuts from longer sections are not created unnecessarily, which is particularly relevant on a made-to-order non-returnable product.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e3mm Gauge for Commercial Specification Throughout\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 1m section is fabricated at the same 3mm gauge as the 2m and 3m sections in the same system. On a commercial parapet where 3mm has been specified for the primary lengths, every component including the infill sections must maintain that specification. A 2mm infill section in a 3mm commercial installation is under-specified for the site conditions that prompted the 3mm specification in the first place, and creates a profile mismatch at both junctions with the 3mm sections either side. For the full explanation of when 3mm is the right gauge, see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\"\u003e\u003cspan\u003e3mm flat coping 2m length page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eFlat Profile for Consistent Horizontal Line\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe flat top surface of this 1m section matches the flat profile of the 2m and 3m sections running either side of it. On a commercial building where the parapet line is visible at street level or from adjacent buildings, maintaining a consistent flat profile across every section including short infill pieces is part of the specification. A sloped infill section in a flat coping run would be immediately visible and unacceptable on any commercial project.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eAny RAL Colour, Matched in the Same Batch\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOrdering the 1m infill sections in the same RAL as the 2m and 3m primary sections, corners, stopends and brackets means all components go through the same coating batch at Chelmsford. The colour match across the full system is consistent because everything is coated together, regardless of section length.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eMade to Order in Chelmsford\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFabricated at the Online Metal Store Ltd facility in Chelmsford to the width and colour specified at order. Made to order means non-returnable unless faulty. The sizing formula, wall width + 170mm, is explained in the size calculation section below. Apply it correctly before ordering, and check the result against the available 23 sizes before placing the order.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMaterial: \u003c\/strong\u003e\u003cspan\u003e3mm grade aluminium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eProfile: \u003c\/strong\u003e\u003cspan\u003eFlat coping length\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eLength: \u003c\/strong\u003e\u003cspan\u003e1m (1000mm)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eExternal Leg:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e75mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eInternal Leg:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e75mm (equal both sides)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWidth Sizes Available: \u003c\/strong\u003e\u003cspan\u003e510mm, 535mm, 560mm, 585mm, 610mm, 635mm, 660mm, 685mm, 710mm, 735mm, 760mm, 785mm, 810mm, 835mm, 860mm, 885mm, 910mm, 935mm, 960mm, 985mm, 1010mm, 1035mm, 1060mm (23 sizes in 25mm increments)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWall Width Range Served: \u003c\/strong\u003e\u003cspan\u003eApproximately 340mm to 890mm (wall width + 170mm = coping size)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSize Note: \u003c\/strong\u003e\u003cspan\u003eThe \"size\" refers to the overall WIDTH of the coping profile, not the run length. All sections on this page are 1m long.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSizing Formula: \u003c\/strong\u003e\u003cspan\u003eWall width + 170mm = size to order (75mm external leg + 75mm internal leg + 10mm + 10mm returns = 170mm)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003ePolyester powder coating, external grade\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eColour: \u003c\/strong\u003e\u003cspan\u003eAny RAL colour to order\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCompatible Bracket: \u003c\/strong\u003e\u003cspan\u003e5mm Aluminium Coping Bracket -- NOT the 4mm bracket, which is for 2mm flat coping only\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eFabrication:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eMade to order -- non-returnable unless faulty\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCountry of Manufacture: \u003c\/strong\u003e\u003cspan\u003eUnited Kingdom (Chelmsford, Essex)\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCalculating the Width Size\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 23 sizes from 510mm to 1060mm refer to the WIDTH of the coping profile, not the run length. Every section on this page is 1m long. The formula for the 3mm flat coping 75mm equal-leg system is: wall width + 170mm = the size to order. This formula is the same for 1m, 2m and 3m sections in this system. A full worked guide is on the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping 2m length page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, but here are the key steps:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eMeasure the parapet wall width at the top from outside face to inside face.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eAdd 75mm (external leg) + 75mm (internal leg) + 10mm + 10mm (returns) = 170mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eTotal: wall width + 170mm = size to order. A 340mm wide commercial wall gives 510mm. A 440mm wall gives 610mm. A 565mm wall gives 735mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eNote: \u003c\/span\u003e\u003cspan\u003ethis formula is specific to the 3mm flat coping 75mm equal-leg system. Sloping coping uses different formulas (100mm leg: wall width + 195mm; 125mm leg: wall width + 220mm). Apply the correct formula for the system you are ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eIf the result falls between two available sizes, select the next size up.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eBracket Specification for 3mm Flat Coping\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEvery 3mm flat coping installation, including 1m sections, requires the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm aluminium coping bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. The 4mm bracket is for 2mm flat coping only. For a 1m section, a minimum of two brackets are needed: one within 150-200mm of each end. On exposed sites or elevated commercial buildings where wind loading calculations have been carried out, follow the engineered bracket centres. The 5mm bracket is fixed to the wall top before the coping is installed; the flat coping section then presses down onto the bracket from above, giving a clean concealed fixing with no fastener penetrating the coping face or top surface.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eHow to Install a 1m 3mm Flat Coping Section\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFix the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm brackets\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in position before pressing the coping. For a 1m section, two brackets at approximately 700-800mm apart cover the section correctly within the 1000mm maximum centre requirement. On a complex parapet layout where 1m sections sit adjacent to 2m or 3m sections, confirm the bracket positions for the entire run before fixing any of them, so the spacing is consistent across the full installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eApply a continuous bead of \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the matching RAL to the internal face of the joint before butting the 1m section up to the adjacent section. The sealant bead is the primary weathertight seal at the joint. Press the section home and lock to the brackets using \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded metal fasteners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the matching RAL. Apply a neat finishing bead of sealant on the external joint faces.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhere the 3mm 1m Flat Coping Section Is Used\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eInfill at the End of Long Commercial Parapet Runs\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn a commercial parapet run of 22m, seven \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3m sections\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e give 21m with 1m remaining. A 1m section closes the run with one additional joint. On a run of 19m, six 3m sections plus a 1m section covers 19m with six joints total. This is the correct and most economical approach on a non-returnable made-to-order commercial product. Ordering a full additional 3m section and cutting 2m of waste adds cost without any installation benefit.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003ePlant Room Enclosures and Service Infrastructure\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePlant rooms, lift shaft enclosures, stair overruns and similar service elements on commercial flat roofs produce short parapet cap requirements. The parapets around these elements are often under 2m per face, sometimes significantly less. A 1m section handles these details efficiently, either as a full-length piece or as a section cut to the exact face length on site. On a commercial building with multiple plant elements, a small stock of 1m sections covers the infill requirements without the waste of cutting multiple 2m or 3m sections.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eStep Parapet Transitions\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCommercial buildings with stepped rooflines have parapet copings that change level at the transition points. The horizontal section of coping that bridges the step is typically short, often 500mm to 1000mm. A 1m section handles this detail cleanly in the 3mm gauge, maintaining the correct specification at every point in the perimeter including the step transitions that longer sections cannot serve without waste or awkward cutting.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eReplacement Sections on Existing 3mm Flat Coping\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhen isolated sections of existing 3mm flat coping are damaged or have failed on a commercial building, the replacement must be 3mm gauge in the matching profile and size. A 1m replacement section is often the most practical choice for spot repairs: it covers the damaged section with a single piece and minimal disturbance to the surrounding installation. Order the 1m section in the correct size using the wall width + 170mm formula and in the RAL colour to match the existing coping. Source the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm 90 degree corners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm brackets\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e from the same Chelmsford manufacturer to ensure profile and colour consistency.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhen should I order 1m sections rather than 2m or 3m?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOrder 1m sections for three situations: as the final infill piece at the end of a longer run where the remaining length is under 2m; for genuinely short parapet sections (plant rooms, step details, tight returns) where a longer section would either overshoot or create significant waste; and for tight-access positions at height where a 2m or 3m section is difficult to handle. For all other commercial parapet positions, plan with \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3m sections\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e first and use \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2m sections\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e for medium faces and infill. The 1m section is not the right primary length for long commercial runs, where its additional joints have no offsetting advantage.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat size do I need for my commercial parapet?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWall width + 170mm = the size to order for the 3mm flat coping 75mm equal-leg system. A 340mm wide commercial parapet gives 510mm. A 440mm wall gives 610mm. A 565mm wall gives 735mm. The 23 sizes refer to coping widths, not run lengths. Every section on this page is 1m long regardless of the size selected.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat bracket do I need for 3mm flat coping 1m sections?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm aluminium coping bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is the correct bracket for all 3mm flat coping. The 4mm bracket is for 2mm flat coping only. For a 1m section, you need a minimum of two brackets at approximately 700-800mm apart. This keeps both bracket spacings within the 1000mm maximum centre requirement.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eCan I cut 3mm aluminium flat coping to length on site?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes. Aluminium cuts cleanly with a fine-toothed hacksaw, a metal-cutting circular saw blade, or an angle grinder with an aluminium-rated cutting disc. Cut square to the profile, deburr the cut edge with a file, and fit a closed stopend or a sealant bead at the cut end where it forms a run terminal. On a commercial project with a quantity of cut sections required, marking out and cutting all sections before starting installation is more efficient than cutting each one as you go.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eIs this product anodised or powder coated?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePowder coated only. The finish is an external grade polyester powder coat available in any RAL colour. These products are not anodised. If the current product page contains any reference to anodising or anodized finishes, these statements are incorrect and must be removed before publication. Powder coating is the only available finish across the entire Online Metal Store Ltd 3mm flat coping range.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003ePart of a Complete 3mm Flat Coping System | 75mm External Leg\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis 1m section is the short infill length in the 3mm aluminium flat coping system with a 75mm external leg. Order all components from the same Chelmsford manufacturer to get matching profiles, consistent colour, and a system that fits together correctly on site. The full 3mm flat coping system with 75mm external leg includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 1m Length | 75mm External Leg (this product)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 2m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 3m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 90 Degree Corner | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 135 Degree Corner | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - Closed Stopend | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-upstand-75mm-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - Stopend Upstand | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-t-junction\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 90 Degree T-Junction | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm Aluminium Coping Bracket\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Sealant 300ml\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Fasteners (Metal)\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor the full 3mm and 2mm flat coping ranges, visit the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eAluminium Flat Copings collection page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/collections\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping collection page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. For guidance on when 3mm is the correct specification over 2mm, and for the full 1m vs 2m vs 3m length selection guide, see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping 2m length page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eStandards and Compliance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAluminium flat coping on commercial flat roof parapets in the UK is specified and installed under \u003c\/span\u003e\u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-6229\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eBS 6229:2018 - Flat Roofs with Continuously Supported Flexible Waterproof Coverings\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. This standard covers parapet and edge detailing requirements for flat roofs, including coping specification, joint treatment and fixing requirements. A 3mm aluminium flat coping installation with correctly spaced 5mm brackets and sealant-bedded joints throughout is consistent with the weathertight parapet requirements of this standard, whether the installation uses 3m primary sections or 1m infill pieces or a combination of both.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe external grade polyester powder coat applied to all 3mm flat coping components meets the requirements of \u003c\/span\u003e\u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-en-12206-1\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eBS EN 12206-1 - Organic Coatings on Aluminium and Aluminium Alloys\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. The same coating standard applies to 1m infill sections as to primary lengths, ensuring that the full installed system, including every short piece, maintains consistent colour and durability.\u003c\/span\u003e\u003c\/p\u003e","brand":"Online Metal Store Ltd","offers":[{"title":"510mm","offer_id":42314540318804,"sku":"AC3-1M-75-510","price":72.0,"currency_code":"GBP","in_stock":true},{"title":"535mm","offer_id":42314540351572,"sku":"AC3-1M-75-535","price":74.84,"currency_code":"GBP","in_stock":true},{"title":"560mm","offer_id":42314540384340,"sku":"AC3-1M-75-560","price":77.69,"currency_code":"GBP","in_stock":true},{"title":"585mm","offer_id":42314540417108,"sku":"AC3-1M-75-585","price":80.53,"currency_code":"GBP","in_stock":true},{"title":"610mm","offer_id":42314540449876,"sku":"AC3-1M-75-610","price":83.38,"currency_code":"GBP","in_stock":true},{"title":"635mm","offer_id":42314540482644,"sku":"AC3-1M-75-635","price":86.22,"currency_code":"GBP","in_stock":true},{"title":"660mm","offer_id":42314540515412,"sku":"AC3-1M-75-660","price":89.06,"currency_code":"GBP","in_stock":true},{"title":"685mm","offer_id":42314540548180,"sku":"AC3-1M-75-685","price":91.91,"currency_code":"GBP","in_stock":true},{"title":"710mm","offer_id":42314540580948,"sku":"AC3-1M-75-710","price":94.75,"currency_code":"GBP","in_stock":true},{"title":"735mm","offer_id":42314540613716,"sku":"AC3-1M-75-735","price":97.6,"currency_code":"GBP","in_stock":true},{"title":"760mm","offer_id":42314540646484,"sku":"AC3-1M-75-760","price":100.44,"currency_code":"GBP","in_stock":true},{"title":"785mm","offer_id":42314540679252,"sku":"AC3-1M-75-785","price":103.28,"currency_code":"GBP","in_stock":true},{"title":"810mm","offer_id":42314540712020,"sku":"AC3-1M-75-810","price":106.13,"currency_code":"GBP","in_stock":true},{"title":"835mm","offer_id":42314540744788,"sku":"AC3-1M-75-835","price":108.97,"currency_code":"GBP","in_stock":true},{"title":"860mm","offer_id":42314540777556,"sku":"AC3-1M-75-860","price":111.82,"currency_code":"GBP","in_stock":true},{"title":"885mm","offer_id":42314540810324,"sku":"AC3-1M-75-885","price":114.66,"currency_code":"GBP","in_stock":true},{"title":"910mm","offer_id":42314540843092,"sku":"AC3-1M-75-910","price":117.5,"currency_code":"GBP","in_stock":true},{"title":"935mm","offer_id":42314540875860,"sku":"AC3-1M-75-935","price":120.35,"currency_code":"GBP","in_stock":true},{"title":"960mm","offer_id":42314540908628,"sku":"AC3-1M-75-960","price":123.19,"currency_code":"GBP","in_stock":true},{"title":"985mm","offer_id":42314540941396,"sku":"AC3-1M-75-985","price":126.04,"currency_code":"GBP","in_stock":true},{"title":"1010mm","offer_id":42314540974164,"sku":"AC3-1M-75-1010","price":128.88,"currency_code":"GBP","in_stock":true},{"title":"1035mm","offer_id":42314541006932,"sku":"AC3-1M-75-1035","price":131.72,"currency_code":"GBP","in_stock":true},{"title":"1060mm","offer_id":42314541039700,"sku":"AC3-1M-75-1060","price":134.57,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1588\/2580\/files\/aluminium-flat-coping-1m-length.png?v=1774517114"},{"product_id":"3mm-aluminium-coping-2m-75mm","title":"3mm Aluminium Flat Coping – 2m Length | 75mm External Leg","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 3mm flat coping system is the heavier commercial specification. The size range, 510mm to 1060mm, confirms what this product is designed for: cavity wall commercial construction, wider building envelopes, NHBC-registered new-build housing with insulated parapets, and any commercial project where the structural or architectural specification calls for 3mm gauge rather than the lighter domestic 2mm. The 2m section within that system is the right choice for medium commercial parapet faces, for infill positions in longer runs where the remaining face length falls between 1m and 3m, and for any face where a 3m section would waste more than 1m of made-to-order material.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis is the 3mm aluminium flat coping in a 2m length with a 75mm external leg. It is part of the commercial flat coping system from Online Metal Store Ltd, distinct from the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm flat coping system\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in gauge, size range and bracket specification. Manufactured at the Chelmsford facility, powder coated in any RAL colour, made to order and non-returnable unless faulty.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eFlat Coping or Sloping Coping: Which Profile?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBoth aluminium flat coping and aluminium sloping coping cap a parapet wall and protect it from water ingress. The profile choice depends on the building type, the architectural specification, and the design preference.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eAluminium Flat Coping (This Product)\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe flat top surface gives a clean, horizontal profile at parapet level. This is the standard specification for commercial buildings, office developments, retail units and contemporary residential projects where a minimalist parapet line is part of the design. Flat coping relies on the external leg drip detail and correctly sealed joints for weathertightness rather than a built-in surface slope. The 3mm flat coping system is available in \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e1m\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, 2m (this product) and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3m lengths\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the 75mm external leg range.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eAluminium Sloping Coping\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe sloped top surface actively drains rainwater toward the external face. Sloping coping is common on residential flat roof extensions and new-build housing where positive surface drainage is preferred. The 3mm sloping coping equivalent to this product is the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm sloping coping 2m length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. If the project specification calls for sloping coping rather than flat, use the sloping system throughout: the profiles, corners and stopends are not interchangeable between the flat and sloping systems.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003e2mm or 3mm Flat Coping: Choosing the Right Gauge\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBoth gauges are available in the 75mm external leg flat coping range. The profile is the same; the gauge choice is determined by the project type and specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eUse 2mm Flat Coping When\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe project is a domestic flat roof extension, garage, boundary wall or outbuilding in a sheltered setting. The parapet wall produces a coping girth below 510mm. Budget is a consideration and 2mm meets the specification. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/2mm-aluminium-coping-3m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm flat coping 3m length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/2mm-aluminium-coping-2m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm flat coping 2m length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the 75mm system cover the domestic and lighter-commercial market.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eUse 3mm Flat Coping When\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe project is commercial. The parapet wall width produces a coping girth of 510mm or above. The NHBC or structural specification requires 3mm. The site is exposed or the building is two or more storeys. All components on a 3mm installation must be 3mm gauge: lengths, corners, stopends and the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm coping bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. Do not mix 2mm accessories with 3mm lengths.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis 2m section is part of the 3mm aluminium flat coping system with a 75mm external leg, manufactured at the Online Metal Store Ltd facility in Chelmsford. At 3mm, the profile is stiffer than the 2mm equivalent and resists wind uplift forces more effectively over the service life of a commercial parapet. The flat top surface sits level on the parapet, carrying the drip detail over the 75mm external leg. The internal leg is also 75mm, giving a balanced profile on both faces of the wall. The 23 available width sizes, from 510mm to 1060mm in 25mm increments, cover commercial parapet wall widths from approximately 340mm up to 890mm. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm aluminium coping bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is the correct concealed fixing bracket for this 3mm system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 2m section sits alongside the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3m length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e1m length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the same system. Use 3m sections as the primary lengths for long commercial parapet runs, 2m sections for medium faces and infill, and 1m sections for short faces, final infill pieces and tight-access positions. Every component in the system, including corners, stopends and the bracket, must be 3mm gauge to match.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e3mm Gauge for Commercial Specification\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAt 3mm, this flat coping section has greater cross-sectional rigidity than the 2mm equivalent. On a commercial building at any meaningful height above ground level, the peel forces generated by wind acting on the coping overhang are higher than at domestic eaves level. The 3mm gauge handles those forces more effectively over the lifespan of the installation. On a commercial project where the coping is expected to perform for 25 years without intervention, specifying 3mm at the outset is the correct long-term decision.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e2m Sections for Fewer Joints on Medium Commercial Faces\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn a commercial parapet face between 2m and 5m, the 2m section gives fewer joints than 1m sections and less waste than a 3m section where the face does not divide neatly. A 4m face takes two 2m sections with one joint and no waste. Four 1m sections on the same face give three joints. Joint count on a commercial parapet is not just an aesthetic consideration: every joint is a sealant line, and fewer joints means a simpler maintenance position for the building lifetime.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eFlat Profile for Clean Commercial Architectural Lines\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe flat top surface gives a precise horizontal profile at parapet level. This is the correct choice for commercial buildings, contemporary office and retail architecture, and modern residential projects where a clean, uninterrupted parapet line is part of the specification. Unlike sloping coping, there is no visible tilt or angle on the finished profile: the coping sits level and gives a sharp, consistent shadow line along the parapet at any height.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e75mm External Leg, Balanced on Both Faces\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe flat coping system with a 75mm external leg has matching 75mm legs on both sides of the wall. This gives a symmetrical profile with equal overhang on the external and internal faces, which is the standard specification for flat coping on straightforward commercial parapets. The sizing formula for this system is simpler than for sloping coping: wall width + 75mm + 75mm + 10mm + 10mm = wall width + 170mm. For the full range of 3mm flat coping accessories, including corners, stopends and upstand stopends, see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/collections\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm aluminium flat coping section\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003ePowder Coated in Any RAL Colour\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe finish is an external grade polyester powder coat available in any RAL colour. On a commercial project where the coping colour is part of the contract specification, ordering the 2m sections alongside the 1m infill sections, 3m primary sections, corners, stopends and brackets in the same RAL ensures all components are coated in the same Chelmsford batch and arrive colour-matched. Anthracite grey (RAL 7016) and white (RAL 9016) are among the most commonly specified colours for commercial flat coping, but any RAL is available to order.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e3mm grade aluminium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eProfile: \u003c\/strong\u003e\u003cspan\u003eFlat coping length\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eLength: \u003c\/strong\u003e\u003cspan\u003e2m (2000mm)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eExternal Leg: \u003c\/strong\u003e\u003cspan\u003e75mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInternal Leg: \u003c\/strong\u003e\u003cspan\u003e75mm (equal both sides)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWidth Sizes Available: \u003c\/strong\u003e\u003cspan\u003e510mm, 535mm, 560mm, 585mm, 610mm, 635mm, 660mm, 685mm, 710mm, 735mm, 760mm, 785mm, 810mm, 835mm, 860mm, 885mm, 910mm, 935mm, 960mm, 985mm, 1010mm, 1035mm, 1060mm (23 sizes in 25mm increments)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eWall Width Range Served:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eApproximately 340mm to 890mm (wall width + 170mm = coping size)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eSize Note:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eThe \"size\" refers to the overall WIDTH of the coping profile, not the run length. All sections on this page are 2m long.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSizing Formula: \u003c\/strong\u003e\u003cspan\u003eWall width + 170mm = size to order (75mm external leg + 75mm internal leg + 10mm + 10mm returns = 170mm)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003ePolyester powder coating, external grade\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eColour: \u003c\/strong\u003e\u003cspan\u003eAny RAL colour to order\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCompatible Bracket: \u003c\/strong\u003e\u003cspan\u003e5mm Aluminium Coping Bracket -- NOT the 4mm bracket, which is for 2mm flat coping only\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eFabrication:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eMade to order -- non-returnable unless faulty\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCountry of Manufacture: \u003c\/strong\u003e\u003cspan\u003eUnited Kingdom (Chelmsford, Essex)\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eCalculating the Width Size: The 3mm Flat Coping Formula\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 23 sizes from 510mm to 1060mm refer to the WIDTH of the coping profile, not the run length. Every section on this page is 2m long. The formula for the 75mm external leg flat coping system is straightforward because both legs are equal:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eMeasure the parapet wall width at the top from outside face to inside face.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eAdd 75mm (external leg) + 75mm (internal leg) + 10mm + 10mm (returns) = 170mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eTotal: wall width + 170mm = the size to order. A 340mm wide commercial parapet gives 510mm, the smallest available size. A 440mm wall gives 610mm. A 565mm wall gives 735mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eImportant: \u003c\/span\u003e\u003cspan\u003ethis formula is different from the sloping coping formula. Sloping coping with a 100mm external leg uses wall width + 195mm. Flat coping with 75mm equal legs uses wall width + 170mm. Apply the correct formula for the product you are ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eIf the calculated size falls below 510mm, the parapet is likely in the domestic 2mm system range. Verify the specification before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eIf the result falls between two sizes, order the next size up.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eOn site: measure across the top of an installed section from external leg tip to internal leg tip. That measurement is the size.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eHow Many 2m Sections Do You Need?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn a commercial parapet, plan each face separately. Work out the total linear metres of each straight face, then choose the most efficient length combination.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e4m face: \u003c\/span\u003e\u003cspan\u003etwo 2m sections, one joint, no waste. The most efficient use of the 2m section.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e5m face: \u003c\/span\u003e\u003cspan\u003etwo 2m sections plus a 1m cut or a separate 1m section. Two lengths, one joint.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e6m face: \u003c\/span\u003e\u003cspan\u003ethree 2m sections with two joints, or two 3m sections with one joint. The 3m sections are more efficient on a 6m face.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e7m face: \u003c\/span\u003e\u003cspan\u003eone 3m section plus two 2m sections with two joints. More efficient than three 2m sections plus a 1m infill.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eMultiple faces: \u003c\/span\u003e\u003cspan\u003eadd up 2m section requirements per face. Corner pieces and stopends do not contribute to run length calculations.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor faces of 3m or more, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3m length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is the more efficient primary section. Use 2m sections for medium faces of 2m to 5m and for infill positions. Use the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e1m length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e for short faces and final infill pieces where the remaining length is under 2m.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eHow to Install 3mm Flat Coping 2m Sections\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMark the bracket positions along the full run before fixing anything. Fix the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm aluminium coping brackets\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e at the correct centres, not exceeding 1000mm, with brackets within 150-200mm of every run terminal, corner junction and stopend position. A 2m section needs a minimum of three brackets: one near each end and at least one intermediate. On exposed sites or elevated commercial buildings, reduce bracket centres to 750mm or as specified by the structural engineer. Confirm all brackets are flat to the wall top before pressing any coping.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePress the 2m flat coping sections onto the brackets from the fixed terminal end of the run. Apply a continuous bead of \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the matching RAL to the internal face of each joint before butting the next section. The sealant bead is the primary weathertight seal at every joint. Keep it continuous.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eLock the coping to the brackets using \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded metal fasteners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the matching RAL. Fit the appropriate \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm 90 degree corner pieces\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e at every change of direction and the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm closed stopends\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e at every run terminal. Apply a finishing sealant bead on all external joint faces.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhere the 3mm 2m Flat Coping Section Is Used\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCommercial Buildings with Medium Parapet Faces\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn commercial buildings where the perimeter parapet includes faces between 2m and 5m, the 2m section is the natural fit. An office building with a plant room enclosure at 4m wide, a retail unit with a service yard access side parapet of 3.5m, or a stepped parapet detail on a mixed-use development all produce medium-length faces that the 2m section serves well. Used alongside the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3m primary lengths\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e for the longer continuous runs, the 2m section handles the geometry of a real commercial building more efficiently than trying to plan everything in 3m increments. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-coping-case-study\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium coping case study\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e shows a completed commercial coping installation on a live UK project.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eNew-Build Housing Developments with 3mm Specification\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn NHBC-registered residential developments where the house type specification calls for 3mm flat coping on parapet walls, the 2m section handles medium parapet faces within each plot. Volume housebuilders ordering the full system across a development phase, including \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm brackets\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, corners and stopends from the same Chelmsford manufacturer, get colour-matched components and a traceable single-source specification. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-coping-case-study\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium coping case study from London\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e demonstrates the flat coping system at residential project scale.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eExposed Site Parapets Requiring 3mm Specification\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn buildings near the Essex or Kent coast, on hilltop or open-aspect sites, or on any building where the wind loading at parapet level has been assessed and 3mm specified, the 2m flat coping section is the correct infill length within a predominantly 3m installation. Get the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm bracket centres\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e right for the site exposure, seal every joint with \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, and the 3mm flat coping will perform without attention for the life of the building.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCommercial Refurbishment: Like-for-Like Replacement\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhen replacing existing 3mm flat coping on a commercial building, the replacement must be 3mm. A 2mm replacement on a 3mm installation produces a visible mismatch and is under-specified for the site conditions that originally required 3mm. The 2m section is the right replacement length for medium parapet faces, alongside the matching \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm 90 degree corners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eclosed stopends\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm brackets\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e from the same Chelmsford manufacturer.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhen should I use 3mm flat coping rather than 2mm?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUse 3mm when the project is commercial, when the parapet wall width produces a coping girth of 510mm or above, when the NHBC or structural specification requires 3mm, or when the site is exposed or the building is at two or more storeys. For domestic flat roof extensions, garages and boundary walls in sheltered settings, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/2mm-aluminium-coping-3m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm flat coping system\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is normally the right choice.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat is the difference between flat and sloping aluminium coping?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFlat coping has a level top surface that sits horizontally on the parapet. Sloping coping has a built-in slope that tilts toward the external face, actively draining rainwater off the surface. Flat coping is standard on commercial buildings and contemporary architecture where a horizontal parapet profile is specified. Sloping coping is common on residential extensions and new-build housing where positive surface drainage is preferred. The profiles, corners and stopends are not interchangeable between the two systems. For sloping coping in 3mm gauge, see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm sloping coping 2m length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat size do I need for my commercial parapet?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWall width + 170mm = the size to order for the 75mm external leg flat coping system. A 340mm wide commercial parapet gives 510mm, the smallest available size. A 440mm wall gives 610mm. A 565mm wall gives 735mm. The 23 sizes refer to coping widths, not run lengths. Every section on this page is 2m long regardless of the size selected.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat bracket do I use with 3mm flat coping?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm aluminium coping bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is the correct bracket for all 3mm flat coping. The 4mm bracket is for 2mm flat coping only. Fix at maximum 1000mm centres with a bracket within 150-200mm of every run end, corner and stopend. For a 2m section, you need a minimum of three brackets. On exposed sites or elevated buildings, reduce to 750mm centres or follow the structural engineer's specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eCan I mix 3mm and 2mm components on the same flat coping installation?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNo. The 2mm and 3mm flat coping profiles have different wall thicknesses. A 2mm corner or stopend on a 3mm run will not produce a flush junction. All components on a 3mm installation must be 3mm gauge throughout: lengths, corners, stopends and upstand stopends. Only the bracket differs by name (5mm for 3mm coping, 4mm for 2mm coping); the profile accessories are system-specific.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eHow many 2m sections do I need for my project?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePlan each parapet face separately. For faces of 4m to 5m, two 2m sections give the most efficient result with one joint. For faces of 2m to 4m, one 2m section covers the face with a short cut or a 1m infill piece. For faces over 5m, a \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3m primary section\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e with a 2m or 1m infill usually gives a lower joint count. Add up the 2m section requirements across all faces and order accordingly.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003ePart of a Complete 3mm Flat Coping System | 75mm External Leg\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis 2m section is one of three run lengths in the 3mm aluminium flat coping system with a 75mm external leg. A complete installation needs lengths in the right mix, 3mm corner pieces at every change of direction, 3mm stopends at every run terminal, 5mm brackets at the correct centres, sealant at every joint, and metal fasteners on commercial substrates. Order all components from the same Chelmsford manufacturer for matching profiles, consistent colour and a system that fits together. The full 3mm flat coping system with 75mm external leg includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 1m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 2m Length | 75mm External Leg (this product)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 3m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 90 Degree Corner | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 135 Degree Corner | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - Closed Stopend | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-upstand-75mm-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - Stopend Upstand | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-t-junction\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 90 Degree T-Junction | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm Aluminium Coping Bracket\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Sealant 300ml\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Fasteners (Metal)\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor the full 3mm flat coping range and the 2mm flat coping system, visit the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eAluminium Flat Copings collection page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. For 3mm flat coping delivered as an alternative profile to sloping coping, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm sloping coping 2m length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is the equivalent product in the sloping profile.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eStandards and Compliance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAluminium flat coping on commercial flat roof parapets in the UK is specified under \u003c\/span\u003e\u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-6229\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eBS 6229:2018 - Flat Roofs with Continuously Supported Flexible Waterproof Coverings\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. The standard covers parapet and edge detailing for flat roofs, including coping specification, joint treatment and fixing requirements. A 3mm aluminium flat coping system with 5mm brackets at the correct centres, sealant-bedded joints and correctly specified accessories throughout is consistent with the weathertight parapet requirements of this standard.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe external grade polyester powder coat applied to all 3mm flat coping components from Online Metal Store Ltd meets the requirements of \u003c\/span\u003e\u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-en-12206-1\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eBS EN 12206-1 - Organic Coatings on Aluminium and Aluminium Alloys\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. On a commercial project where the coping specification forms part of a contract document, this standard provides a documented performance basis for the coating across every component in the system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor NHBC-registered new-build projects, Chapter 7.1 of the NHBC Standards covers parapet wall and flat roof construction. A 3mm aluminium flat coping system, correctly sized and installed with 5mm brackets and sealant-bedded joints, is consistent with the parapet detailing requirements for new-build completions where 3mm flat coping is the specified configuration.\u003c\/span\u003e\u003c\/p\u003e","brand":"Online Metal Store Ltd","offers":[{"title":"510mm","offer_id":42314541105236,"sku":"AC3-2M-75-510","price":118.8,"currency_code":"GBP","in_stock":true},{"title":"535mm","offer_id":42314541138004,"sku":"AC3-2M-75-535","price":124.34,"currency_code":"GBP","in_stock":true},{"title":"560mm","offer_id":42314541170772,"sku":"AC3-2M-75-560","price":129.89,"currency_code":"GBP","in_stock":true},{"title":"585mm","offer_id":42314541203540,"sku":"AC3-2M-75-585","price":135.43,"currency_code":"GBP","in_stock":true},{"title":"610mm","offer_id":42314541236308,"sku":"AC3-2M-75-610","price":140.98,"currency_code":"GBP","in_stock":true},{"title":"635mm","offer_id":42314541269076,"sku":"AC3-2M-75-635","price":146.52,"currency_code":"GBP","in_stock":true},{"title":"660mm","offer_id":42314541301844,"sku":"AC3-2M-75-660","price":152.06,"currency_code":"GBP","in_stock":true},{"title":"685mm","offer_id":42314541334612,"sku":"AC3-2M-75-685","price":157.61,"currency_code":"GBP","in_stock":true},{"title":"710mm","offer_id":42314541367380,"sku":"AC3-2M-75-710","price":163.15,"currency_code":"GBP","in_stock":true},{"title":"735mm","offer_id":42314541400148,"sku":"AC3-2M-75-735","price":168.7,"currency_code":"GBP","in_stock":true},{"title":"760mm","offer_id":42314541432916,"sku":"AC3-2M-75-760","price":174.24,"currency_code":"GBP","in_stock":true},{"title":"785mm","offer_id":42314541465684,"sku":"AC3-2M-75-785","price":179.78,"currency_code":"GBP","in_stock":true},{"title":"810mm","offer_id":42314541498452,"sku":"AC3-2M-75-810","price":185.33,"currency_code":"GBP","in_stock":true},{"title":"835mm","offer_id":42314541531220,"sku":"AC3-2M-75-835","price":190.87,"currency_code":"GBP","in_stock":true},{"title":"860mm","offer_id":42314541563988,"sku":"AC3-2M-75-860","price":196.42,"currency_code":"GBP","in_stock":true},{"title":"885mm","offer_id":42314541596756,"sku":"AC3-2M-75-885","price":201.96,"currency_code":"GBP","in_stock":true},{"title":"910mm","offer_id":42314541629524,"sku":"AC3-2M-75-910","price":207.5,"currency_code":"GBP","in_stock":true},{"title":"935mm","offer_id":42314541662292,"sku":"AC3-2M-75-935","price":213.05,"currency_code":"GBP","in_stock":true},{"title":"960mm","offer_id":42314541695060,"sku":"AC3-2M-75-960","price":218.59,"currency_code":"GBP","in_stock":true},{"title":"985mm","offer_id":42314541727828,"sku":"AC3-2M-75-985","price":224.14,"currency_code":"GBP","in_stock":true},{"title":"1010mm","offer_id":42314541760596,"sku":"AC3-2M-75-1010","price":229.68,"currency_code":"GBP","in_stock":true},{"title":"1035mm","offer_id":42314541793364,"sku":"AC3-2M-75-1035","price":235.22,"currency_code":"GBP","in_stock":true},{"title":"1060mm","offer_id":42314541826132,"sku":"AC3-2M-75-1060","price":240.77,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1588\/2580\/files\/aluminium-flat-coping-2m-length.png?v=1774517115"},{"product_id":"5mm-aluminium-coping-bracket","title":"5mm Aluminium Flat Coping – Bracket","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn a commercial flat roof parapet, the coping bracket is not just a fixing component: it is the structural interface between the wall and the coping system, and it needs to be specified correctly to resist the wind loads the parapet will face across its service life. A 5mm bracket on a \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping system\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is not an arbitrary choice. It is the correct pairing of coping gauge to bracket gauge for the demands of commercial construction, exposed sites, NHBC-registered new builds, and any project where a structural engineer has been involved in the parapet specification. Under-specifying the bracket on a commercial parapet is a liability that does not show itself in good weather. It shows itself on the first night of sustained wind across an open site in Essex, Suffolk or on the Thames Estuary, when a coping run that was never properly held starts to lift at the ends.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis 5mm aluminium coping bracket is the concealed fixing component for the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm aluminium flat coping system\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. Available in 23 sizes from 510mm to 1060mm, it covers the wide commercial parapet wall widths that 3mm coping is most commonly specified for. It is fabricated in Chelmsford, Essex, and is the bracket that every \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e installation needs to perform as specified.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 5mm aluminium flat coping bracket is the concealed fixing bracket for the 3mm aluminium flat coping range. It is fixed to the top of the parapet wall before the coping is installed, and the 3mm coping profile is then pressed or clipped down onto the bracket from above. This secret fix principle means that no fastener penetrates the top or face of the finished coping: the fixing is entirely concealed within the system, the coping surface is unbroken, and there are no holes that could become water entry points as sealants age. The bracket is the structural backbone that holds the coping to the wall and resists the peel forces generated by wind pressure on the coping overhang.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAt 5mm, this bracket is heavier than the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/4mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e4mm bracket used with 2mm coping\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, and the difference is deliberate. The 3mm coping system is specified for commercial buildings, exposed sites, and projects where greater wind uplift resistance is required. A 5mm bracket provides the additional rigidity and fixing resistance those conditions demand. The size range of 510mm to 1060mm also reflects the commercial context: these are wider parapet walls than the typical domestic extension, consistent with commercial flat roof construction, boundary structures on larger developments, and parapets on buildings of two storeys or more.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eSpecified for the 3mm Coping System and Nothing Else\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 5mm bracket is the correct and only recommended bracket for the 3mm aluminium flat coping range. The current product page states it is \"compatible with all OMS flat coping profiles\" this is not accurate and must be corrected in the live page. The 5mm bracket is for 3mm coping. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/4mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e4mm bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is for 2mm coping. Mixing bracket gauge with coping gauge creates a dimensional mismatch at the fixing interface and, on a commercial or exposed-site project, an under-specified fixing arrangement. Ordering the correct bracket for the correct coping gauge is not a minor detail: it is the specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eGreater Rigidity for High Wind Load Conditions\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe extra millimetre of gauge over the 4mm bracket makes a meaningful difference to the stiffness of the fixing assembly, particularly on a wide commercial parapet where the coping overhang moment arms are larger. Wind pressure on the underside of a coping overhang generates a peel force at the fixing points. A 5mm bracket resists that force more effectively than a 4mm bracket, which is why the heavier bracket is paired with the heavier gauge coping on commercial and exposed-site projects. On a building above 10 metres, or on an open-aspect site on the Essex coast or across the South East, the wind load case is more demanding than a sheltered domestic setting, and the bracket specification should reflect that.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eConcealed Fixing with Pre-Drilled Points\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eLike the 4mm bracket, this 5mm bracket operates on the secret fix principle: it is fixed to the wall first, then the coping presses down onto it with no fastener penetrating the coping face or top surface. On a commercial building where the parapet coping is visible from adjacent buildings, public spaces, or at close range from access gantries during maintenance, the clean unbroken coping line that a concealed bracket system delivers is part of the architectural specification. Pre-drilled fixing points ensure accurate bracket positioning and reproducible fixing centres across a long commercial parapet run.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e23 Sizes for Wide Commercial Parapet Walls\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 23 available sizes from 510mm to 1060mm cover parapet wall widths from approximately 340mm up to approximately 890mm, the wall width range typical of commercial flat roof construction, boundary wall structures on larger developments, and building parapets where additional insulation or structural build-up within the wall increases the overall parapet width beyond what a domestic extension would require. The full size range in 25mm increments means virtually every commercial wall width is covered without the need for bespoke fabrication.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eAluminium Throughout for Long-Term Corrosion Resistance\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUsing an aluminium bracket with an aluminium coping system eliminates the bi-metallic corrosion risk that occurs when two different metals are in contact in the presence of moisture. On commercial sites in coastal locations, urban environments with elevated atmospheric pollution, or buildings where the parapet is difficult to access for inspection and maintenance, the all-aluminium bracket and coping specification provides a passive, maintenance-free corrosion resistance that a bracket with any ferrous component cannot match over the same service life.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eUK Manufactured for Commercial Programme Reliability\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFabricated at the Online Metal Store Ltd facility in Chelmsford, Essex, with lead times that support commercial construction programmes rather than overseas shipping schedules. On a commercial project where the coping installation is on the programme-critical path to watertight, a UK-manufactured bracket that can be ordered, fabricated and delivered within a defined short window removes a scheduling variable that an imported product introduces. For volume new-build developments across Essex and the South East, phase ordering from a UK manufacturer is straightforward.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMaterial: \u003c\/strong\u003e\u003cspan\u003e5mm grade aluminium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eType:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eConcealed \/ secret fix flat coping bracket\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eCompatible Coping:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e3mm Aluminium Flat Coping range (all leg sizes). NOT for use with 2mm coping\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAvailable Sizes: \u003c\/strong\u003e\u003cspan\u003e510mm, 535mm, 560mm, 585mm, 610mm, 635mm, 660mm, 685mm, 710mm, 735mm, 760mm, 785mm, 810mm, 835mm, 860mm, 885mm, 910mm, 935mm, 960mm, 985mm, 1010mm, 1035mm, 1060mm (23 sizes in 25mm increments)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eParapet Wall Width Range: \u003c\/strong\u003e\u003cspan\u003eApproximately 340mm to 890mm wall width (for 75mm external leg coping with 10mm returns)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eFixing Method:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eFixed to top of parapet wall; 3mm coping presses \/ clips onto bracket from above\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSubstrate: \u003c\/strong\u003e\u003cspan\u003eMasonry (brick\/block), concrete, structural steel (appropriate fixings required per substrate)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eRecommended Bracket Centres:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eMaximum 1000mm on standard commercial applications; 750mm or less on exposed sites or elevated buildings; confirm with structural engineer where wind loading calculations apply\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eBrackets per 3m Length:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eMinimum 3 per 3m run (one near each end and at least one intermediate); increase frequency on exposed sites\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eFabrication\u003c\/strong\u003e: \u003c\/span\u003e\u003cspan\u003eMade to order non-returnable unless faulty\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCountry of Manufacture: \u003c\/strong\u003e\u003cspan\u003eUnited Kingdom (Chelmsford, Essex)\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eHow to Select the Correct Bracket Size\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe bracket size must match the overall width of the 3mm flat coping profile, not the wall width alone. The calculation is the same formula used for the coping stopends:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eMeasure the parapet wall width at the top, from outside face to inside face. This is the wall width.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eAdd both external leg dimensions. For a 75mm external leg, add 75mm + 75mm = 150mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eAdd both returns (10mm each side for standard flat coping). Add 10mm + 10mm = 20mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eTotal: wall width + 170mm = bracket size. A 370mm wide commercial parapet wall gives a bracket size of 540mm. Select the 535mm bracket (next size down that seats correctly) or the 560mm (next size up). When in doubt, confirm by measuring the overall installed coping width directly across the top surface: that measurement is the bracket size.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFor wall widths producing a calculated size below 510mm: the coping girth falls within the 4mm bracket range (which starts at smaller sizes). Verify that 3mm coping is the correct specification for this wall width; if the wall is narrow and the project is domestic, 2mm coping with a 4mm bracket may be more appropriate.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFor wall widths producing a calculated size above 1060mm: contact Online Metal Store Ltd directly. Bespoke bracket solutions are available for very wide parapets that exceed the standard size range.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003e5mm or 4mm: Confirming the Right Bracket for Your Project\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe bracket gauge is determined by the coping gauge. There is no discretion here: the 5mm bracket is for 3mm coping; the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/4mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e4mm bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is for 2mm coping. The following conditions indicate 3mm coping with a 5mm bracket is the correct specification:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eThe project is commercial: office, retail, industrial, mixed-use, healthcare, education, or any building type where a structural or architectural specification has been produced.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eThe project is an NHBC-registered new build where the parapet detail on the house type calls for 3mm coping.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eThe site is exposed: coastal, open-aspect, hilltop, or within a wind speed zone where the structural engineer has confirmed that 3mm coping with a heavier bracket is required.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eThe building is above two storeys or the parapet is at a height where wind uplift forces are increased relative to ground level.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eThe parapet wall is wider than approximately 340mm, which puts the coping girth into the 510mm+ size range where the 5mm bracket is the standard product.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eA structural engineer or specifier has called for 3mm coping and 5mm brackets in the project documentation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eIf none of these conditions apply and the project is a standard domestic flat roof extension or outbuilding in a sheltered location, 2mm coping with a 4mm bracket is likely the correct and more cost-effective specification.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eHow Many 5mm Brackets Do You Need?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe bracket count calculation for the 5mm bracket is the same as for the 4mm: divide the total linear metres of straight coping run by 0.9 and round up. This gives the minimum number of brackets at 1000mm centres. For a commercial parapet with 45 linear metres of \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, that is a minimum of 50 brackets. On exposed sites, reduce centres to 750mm: divide total linear metres by 0.7 and round up instead.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eMinimum 3 brackets per 3m coping length at 1000mm maximum centres: one within 200mm of each run end, one intermediate.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eMinimum 2 brackets per 1m or 2m length, with centres not exceeding 1000mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eAt every corner and stopend: position a bracket within 150-200mm of each end of each coping run. Run ends are the highest-risk points for wind-induced peel-back.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eExposed sites and tall buildings: reduce to 750mm centres as a minimum. Where a structural engineer has provided wind loading calculations, follow the engineered bracket centres precisely.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003ePhase ordering on volume developments: for a new-build development where the same house type repeats across multiple plots, calculate the bracket requirement per unit and order in multiples. UK manufacturing lead times support phase ordering without the long lead times of imported product.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eHow to Install the 5mm Coping Bracket\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMark the bracket positions along the full parapet run using a chalk line or builder's line on the wall top before fixing any brackets. On a commercial parapet of 20 metres or more, alignment errors accumulate across the run and create misalignment problems at the far end if positions are not set out from a baseline. Fix each bracket to the wall using fixings appropriate for the substrate: corrosion-resistant masonry anchors for brick and block, concrete anchors for in-situ or precast concrete, stainless steel structural fixings for steel or composite curb constructions. Confirm each bracket is flat to the wall top and free of any rocking before moving to the next position.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOnce all brackets are fixed and the alignment line is confirmed, begin pressing the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping lengths\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e down onto the brackets. Work from one end of the run to the other, applying a continuous bead of \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e at every joint between straight lengths and at every \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecorner\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003estopend\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e junction before the adjacent component is pressed home. On a commercial run, do not work ahead of the sealant application: the temptation to press lengths first and sealant later creates the conditions for a dry joint at the first coping joint you reach.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eLock the coping to the brackets using \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded metal fasteners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the matching RAL colour once alignment and sealant are confirmed. On a commercial project with a metal deck, structural steel curb, or composite wall construction, use the metal fasteners rather than timber fixings. Apply a neat finishing bead of sealant on the external joint line at every corner and stopend position.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhere the 5mm Flat Coping Bracket Is Used\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCommercial Flat Roof Parapets\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEvery \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/collections\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping installation\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e on a commercial building requires this bracket. Offices, retail units, industrial buildings, distribution centres and mixed-use developments across Essex, East London and the wider South East use 3mm flat coping as the standard parapet specification, and the 5mm bracket is the correct fixing component for every metre of that coping. On a commercial building with 60 or 80 linear metres of parapet coping, the bracket order is typically 67 to 90 units at 1000mm centres. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-coping-case-study\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium coping case study\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e demonstrates the full 3mm system installed on a live UK commercial project.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eVolume New-Build Housing Developments\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNHBC-registered housebuilders across the Home Counties and Essex specifying 3mm coping for flat-roofed elements on new-build house types require the 5mm bracket as part of the system specification. On a volume development of 30 to 100 units where the same house type repeats, phase ordering of the complete \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping system\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e from a single UK manufacturer, brackets included, simplifies supply chain management and ensures colour and profile consistency across every unit on the development. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-sloped-coping-case-study-london\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium sloped coping case study\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e shows how this approach works at development scale.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eExposed and Elevated Sites\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBuildings on open-aspect sites, coastal locations and elevated positions across the South East require coping bracket specifications that account for higher wind speeds and greater uplift forces than a sheltered suburban setting. On a site within a few kilometres of the Essex or Kent coast, or on a building of three storeys or more in an exposed location, 3mm coping with 5mm brackets at 750mm centres rather than 1000mm is the appropriate specification. Where a structural engineer has confirmed wind loading calculations for the site, the engineered bracket centres take precedence over the default 1000mm spacing.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eSchools, Healthcare Buildings and Public Sector Assets\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSchools, GP surgeries, dental practices, care homes and community buildings across Essex and the South East almost universally carry a commercial coping specification with a long-term asset management requirement. The 5mm bracket, as part of a complete 3mm flat coping system from a single UK source, gives the client a traceable, documented specification that supports the building's lifecycle maintenance plan. Ordering all components, including brackets, \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\"\u003e\u003cspan\u003e3mm coping lengths\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\"\u003e\u003cspan\u003ecorners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\"\u003e\u003cspan\u003estopends\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, from the same Chelmsford manufacturer ensures full system compatibility and a single point of accountability for the supply.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat is the difference between the 4mm and 5mm coping bracket?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 4mm bracket is the correct specification for the 2mm aluminium flat coping system. The 5mm bracket is the correct specification for the 3mm aluminium flat coping system. The 5mm bracket is thicker, heavier and provides greater fixing rigidity, which is appropriate for the heavier gauge coping and the more demanding commercial, NHBC and exposed-site conditions where 3mm coping is typically specified. The two brackets are not interchangeable: match the bracket gauge to the coping gauge. For 2mm coping, use the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/4mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e4mm bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. For 3mm coping, use this 5mm bracket.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eHow do I select the correct bracket size?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMeasure the overall width of your 3mm flat coping profile wall width plus both external legs plus both returns. For a 75mm external leg system with 10mm returns, that is wall width plus 170mm. A 370mm wide commercial parapet wall gives a coping girth of 540mm, so you would order the 535mm or 560mm bracket. The quickest method on site is to measure the installed coping profile directly across the top surface: that measurement is the bracket size. Sizes run from 510mm to 1060mm in 25mm steps.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eHow many 5mm brackets do I need?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMinimum three brackets per 3m coping length at 1000mm maximum centres, with a bracket within 200mm of every run end, corner and stopend position. As a quick calculation: divide total linear metres by 0.9 and round up for 1000mm centres, or divide by 0.7 and round up for 750mm centres on exposed sites. For a 45-metre commercial parapet at 1000mm centres, that is a minimum of 50 brackets. Where a structural engineer has confirmed bracket centres for the wind load case, follow the engineered specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eIs the 5mm bracket compatible with 2mm coping profiles?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNo. The 5mm bracket is designed for the 3mm aluminium flat coping system. While the bracket profile shape is related, the wall thickness difference means the dimensional relationship between a 5mm bracket and a 2mm coping profile is not the same as the designed 5mm bracket to 3mm coping pairing. Using a 5mm bracket with 2mm coping is also over-specifying the bracket for what is typically a domestic or light application, and the cost differential is not justified. Use the 4mm bracket with 2mm coping.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eShould bracket centres be confirmed by a structural engineer on commercial projects?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn projects where wind loading calculations have been carried out as part of the structural design, yes. The 1000mm maximum centre guidance is a reasonable default for standard commercial applications, but on buildings above 10 metres, sites in high wind speed zones, or buildings with unusual geometry that creates elevated local wind pressures at the parapet, the engineered bracket centres from a structural wind loading calculation should take precedence. The relevant design standard is BS EN 1991-1-4 Eurocode 1 (Wind Actions). For straightforward commercial projects in low-to-moderate wind zones, the 1000mm default spacing is appropriate.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003ePart of a Complete 3mm Flat Coping System\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 5mm bracket is the fixing component that every 3mm flat coping installation depends on. Order it alongside the coping lengths, corners, stopends and accessories from the same Chelmsford manufacturer to guarantee system compatibility, consistent dimensions and a single programme-friendly delivery. The full 3mm aluminium flat coping system with 75mm external leg includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 1m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 2m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 3m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping 90 Degree Corner | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping 135 Degree Corner | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - Closed Stopend | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-upstand-75mm-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - Stopend Upstand | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-t-junction\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 90 Degree T-Junction | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e5mm Aluminium Coping Bracket (this product)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Sealant 300ml\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Fasteners (Metal)\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor the complete range across both 2mm and 3mm gauges, visit the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eAluminium Flat Copings collection page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eAluminium Copings overview page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. For 2mm flat coping installations, the correct bracket is the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/4mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e4mm Aluminium Coping Bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eStandards and Compliance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eParapet coping systems on flat roofs in the UK are specified and detailed under \u003c\/span\u003e\u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-6229\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eBS 6229:2018 - Flat Roofs with Continuously Supported Flexible Waterproof Coverings\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. This standard covers parapet and edge detailing requirements for flat roofs in the UK, including the structural performance and fixing requirements for coping systems. Bracket spacing, substrate fixing and wind uplift resistance are all within the scope of coping specification under this standard.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn projects where wind loading is a formal design consideration, bracket centres should be confirmed against \u003c\/span\u003e\u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-en-1991-1-4\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eBS EN 1991-1-4 - Eurocode 1: Wind Actions on Structures\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. This Eurocode defines wind load calculation methodology for UK buildings. On commercial projects, tall buildings, or sites in high wind speed zones across the South East and coastal Essex, the structural engineer should confirm the design wind uplift forces at the parapet and specify bracket centres accordingly. The 5mm bracket specification is consistent with the requirements for heavier-gauge coping systems in higher wind load conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor NHBC-registered new-build projects, Chapter 7.1 of the NHBC Standards sets out parapet wall and flat roof construction requirements. The 5mm bracket, as part of a complete 3mm flat coping system, is consistent with the NHBC parapet detailing requirements for new-build completions where a heavier gauge coping specification is called for.\u003c\/span\u003e\u003c\/p\u003e","brand":"Online Metal Store Ltd","offers":[{"title":"510mm","offer_id":42314560536660,"sku":"AC-5B-510","price":9.36,"currency_code":"GBP","in_stock":true},{"title":"535mm","offer_id":42314560569428,"sku":"AC-5B-535","price":9.65,"currency_code":"GBP","in_stock":true},{"title":"560mm","offer_id":42314560602196,"sku":"AC-5B-560","price":9.94,"currency_code":"GBP","in_stock":true},{"title":"585mm","offer_id":42314560634964,"sku":"AC-5B-585","price":10.22,"currency_code":"GBP","in_stock":true},{"title":"610mm","offer_id":42314560667732,"sku":"AC-5B-610","price":10.51,"currency_code":"GBP","in_stock":true},{"title":"635mm","offer_id":42314560700500,"sku":"AC-5B-635","price":10.8,"currency_code":"GBP","in_stock":true},{"title":"660mm","offer_id":42314560733268,"sku":"AC-5B-660","price":11.09,"currency_code":"GBP","in_stock":true},{"title":"685mm","offer_id":42314560766036,"sku":"AC-5B-685","price":11.38,"currency_code":"GBP","in_stock":true},{"title":"710mm","offer_id":42314560798804,"sku":"AC-5B-710","price":11.66,"currency_code":"GBP","in_stock":true},{"title":"735mm","offer_id":42314560831572,"sku":"AC-5B-735","price":11.95,"currency_code":"GBP","in_stock":true},{"title":"760mm","offer_id":42314560864340,"sku":"AC-5B-760","price":12.24,"currency_code":"GBP","in_stock":true},{"title":"785mm","offer_id":42314560897108,"sku":"AC-5B-785","price":12.53,"currency_code":"GBP","in_stock":true},{"title":"810mm","offer_id":42314560929876,"sku":"AC-5B-810","price":12.82,"currency_code":"GBP","in_stock":true},{"title":"835mm","offer_id":42314560962644,"sku":"AC-5B-835","price":13.1,"currency_code":"GBP","in_stock":true},{"title":"860mm","offer_id":42314560995412,"sku":"AC-5B-860","price":13.39,"currency_code":"GBP","in_stock":true},{"title":"885mm","offer_id":42314561028180,"sku":"AC-5B-885","price":13.68,"currency_code":"GBP","in_stock":true},{"title":"910mm","offer_id":42314561060948,"sku":"AC-5B-910","price":13.97,"currency_code":"GBP","in_stock":true},{"title":"935mm","offer_id":42314561093716,"sku":"AC-5B-935","price":14.26,"currency_code":"GBP","in_stock":true},{"title":"960mm","offer_id":42314561126484,"sku":"AC-5B-960","price":14.54,"currency_code":"GBP","in_stock":true},{"title":"985mm","offer_id":42314561159252,"sku":"AC-5B-985","price":14.83,"currency_code":"GBP","in_stock":true},{"title":"1010mm","offer_id":42314561192020,"sku":"AC-5B-1010","price":15.12,"currency_code":"GBP","in_stock":true},{"title":"1035mm","offer_id":42314561224788,"sku":"AC-5B-1035","price":15.41,"currency_code":"GBP","in_stock":true},{"title":"1060mm","offer_id":42314561257556,"sku":"AC-5B-1060","price":15.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1588\/2580\/files\/bracket_20no_20tape.1060-4.png?v=1774517142"},{"product_id":"aluminium-coping-stopend-75mm-ex","title":"3mm Aluminium Flat Coping – Closed Stopend | 75mm External Leg","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn a commercial flat roof parapet, every component in the coping system is under scrutiny. The specifier, the contractor and the facilities manager all have an interest in a system that performs without intervention for at least 25 years. The straight \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping lengths\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e90 degree corners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e carry the main weathertight load across the parapet, but the stopend is where the system either closes out properly or leaves a gap. An open or poorly fitted coping termination on a commercial building with an inaccessible or difficult-to-maintain parapet is a liability: water gets in through the end of the coping run, tracks down the wall, and does not show up as a damp problem until the finishes inside are already compromised.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis 3mm aluminium flat coping closed stopend terminates the end of a 3mm flat coping run with a sealed, weathertight closure in the correct gauge for commercial and exposed-site specification. Available in 29 sizes from 185mm to 885mm and powder coated in any RAL colour, it is the terminal component that completes a 3mm flat coping system at every open run end. Manufactured in Chelmsford, Essex, it matches the profile and finish of all other components in the 3mm flat coping range.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe closed stopend caps the open end of a flat coping run with a fully sealed end face. The profile wraps over the top of the parapet wall and closes off the coping at the termination point on all three sides, with no open edge and no gap for water to enter. It is the correct terminal piece for the 3mm aluminium flat coping system with a 75mm external leg, and it works alongside the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping 135 degree corner\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-upstand-75mm-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm closed stopend upstand\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, and the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-t-junction\"\u003e\u003cspan\u003e3mm T-junction\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e as part of a complete perimeter coping system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis product is the 3mm gauge version of the coping stopend. It is available in the same 29 sizes as the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm closed stopend\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, covering parapet wall widths from approximately 15mm up to around 715mm depending on wall construction. The 3mm gauge is the correct specification for commercial projects, NHBC new-build schemes, and any site where the structural or architectural specification calls for a heavier gauge coping system. All components are powder coated to any RAL colour using an external grade polyester finish, fabricated to order at the Chelmsford facility, and non-returnable as made-to-order items.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eHeavier Gauge for Commercial and Exposed-Site Durability\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAt 3mm, this stopend has greater rigidity than the 2mm equivalent, which matters on a commercial parapet where the end detail is exposed to full wind pressure without the sheltering effect that a suburban domestic setting often provides. A stiffer end piece maintains its profile under repeated thermal cycling and wind loading over a longer service life. On a building that will not be re-roofed for 30 years or more, the marginal cost difference between 2mm and 3mm is negligible compared to the cost of remedial work on a failed end detail.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eSealed End Face with No Exposed Joints\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe closed stopend is fabricated as a single pre-formed piece that wraps over the end of the coping profile and seals the end face completely. Once fitted and sealed with sealant at the joint to the straight length, there is no open edge, no exposed aluminium section, and no gap at the coping termination. On a 3mm commercial coping system where the full perimeter may be 50 metres or more, having a properly sealed end at every run termination is part of the overall weathertight strategy for the parapet.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e29 Sizes to Match Any Commercial Wall Width\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCommercial parapets come in a wide range of wall widths depending on the building construction, insulation thickness and parapet design. The 29 sizes available, from 185mm to 885mm in 25mm increments, cover virtually every wall width you will encounter on a UK commercial flat roof project. The size selection guide below explains how to calculate the correct stopend size from the overall coping girth measurement.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eConsistent Colour Across the Full 3mm System\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn a commercial project, the coping colour is typically specified by the architect and forms part of the contract documents. Every component in the order, including this stopend, the straight lengths, the corners and the brackets, is powder coated in the same RAL colour in the same batch at the Chelmsford facility. There are no colour matching tolerances to worry about between components from different batches or different manufacturers. The system arrives as a matched set.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eUK Manufactured for Programme Certainty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMade-to-order at the Online Metal Store Ltd facility in Chelmsford, Essex, with UK manufacturing lead times rather than overseas shipping delays. For a commercial programme where the coping installation sits on the critical path to watertight, having the stopends arrive on time from a UK manufacturer is more reliable than sourcing from a European supplier with variable shipping timescales. The full 3mm flat coping system can be ordered as a package from a single source.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e3mm grade aluminium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eProfile: \u003c\/strong\u003e\u003cspan\u003eFlat coping closed stopend\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eExternal Leg: \u003c\/strong\u003e\u003cspan\u003e75mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e185mm, 210mm, 235mm, 260mm, 285mm, 310mm, 335mm, 360mm, 385mm, 410mm, 435mm, 460mm, 485mm, 510mm, 535mm, 560mm, 585mm, 610mm, 635mm, 660mm, 685mm, 710mm, 735mm, 760mm, 785mm, 810mm, 835mm, 860mm, 885mm (29 sizes in 25mm increments)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFinish: \u003c\/strong\u003e\u003cspan\u003ePolyester powder coating, external grade\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eColour: \u003c\/strong\u003e\u003cspan\u003eAny RAL colour to order\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eType: \u003c\/strong\u003e\u003cspan\u003eClosed (fully sealed end face)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eCompatible System:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e3mm Aluminium Flat Coping range | 75mm External Leg\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eRecommended Bracket:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e5mm Aluminium Coping Bracket (correct specification for 3mm coping system)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFabrication: \u003c\/strong\u003e\u003cspan\u003eMade to order - non-returnable unless faulty\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCountry of Manufacture: \u003c\/strong\u003e\u003cspan\u003eUnited Kingdom (Chelmsford, Essex)\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eHow to Measure for the Right Stopend Size\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe stopend size must match the overall width of the coping profile, not the wall width alone. The calculation for a 75mm external leg flat coping with standard 10mm returns is:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eMeasure the top width of the parapet wall from outside face to inside face. This is the wall width.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eAdd 150mm for both external legs (75mm + 75mm).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eAdd 20mm for both returns (10mm + 10mm).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eTotal: wall width + 170mm = your stopend size. For example, a 265mm wide parapet wall gives a coping girth of 435mm. Order the 435mm stopend.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eIf your calculated girth falls between two available sizes, always select the next size up. A stopend that is fractionally oversized can be trimmed on site; one that is undersized will not close the profile correctly.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eQuickest method on site: measure the overall width of the installed coping profile directly across the top surface, including both legs. That measurement is the stopend size to order.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eClosed Stopend or Stopend Upstand: Which Does Your Detail Require?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBoth components seal the end of a 3mm flat coping run, but the end detail works differently. The closed stopend fully seals the open end face of the coping, with no opening at the termination. It is correct wherever the coping run ends at a wall termination, an abutment with a building face, or a corner where the run is simply capped off. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-upstand-75mm-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm stopend upstand\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e has an upstand element at the end that allows the coping to terminate against a rising element, such as a structural post, an upstand penetration, or a detail where water needs to drain over the end of the run rather than being fully closed off.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn most commercial flat roof parapets, the closed stopend is the correct terminal piece at both ends of every straight coping run. Use the upstand version only where the architectural or structural detail specifically requires it. If you are unsure which applies to a specific detail on your project, raise it with the specifier before ordering, as both are custom-fabricated and non-returnable.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eHow to Fit a 3mm Flat Coping Closed Stopend\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFix the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm aluminium coping brackets\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e along the full run first, with a bracket positioned near each end to give the stopend solid bearing. On a 3mm commercial coping system, bracket positions should follow the structural engineer's recommendation where wind uplift calculations have been carried out for the site. The end bracket should be set back from the wall termination far enough that the stopend seats fully over the end of the final straight length without the bracket fouling the inside of the stopend profile.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOffer the stopend to the open end of the final straight length and check the fit before sealing. The stopend should slide over the coping end and sit flush with the outer face of the straight length on all sides. Apply a continuous bead of \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e around the full internal perimeter of the stopend before pressing it to its final position. On a commercial parapet, do not reduce the sealant application at the stopend. The joint between the stopend and the straight length is a point of potential water ingress, and the sealant bead is the only thing sealing it. A thin or incomplete bead at the end of a 50-metre coping run will be the point of failure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSecure the assembly using \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded metal fasteners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the matching RAL colour. On a commercial project with a metal deck, steel kerb, or structural steel curb at the parapet, use the metal fasteners rather than timber fixings. Fix through the bracket bearing positions, keeping fixings in alignment with the bracket below for proper load transfer. Apply a neat finishing bead of sealant on the external joint line between the stopend and the straight length.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhere the 3mm Flat Coping Closed Stopend Is Used\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCommercial Flat Roof Parapets\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCommercial buildings, including office developments, retail parks, logistics units and mixed-use schemes across the South East and the wider UK, typically specify 3mm aluminium flat coping for the parapet system. On a commercial parapet, every component in the system is specified to the same gauge and finish, and the stopends are ordered alongside the lengths, corners and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm coping brackets\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e as part of the full package. Ordering the stopends from the same Chelmsford manufacturer as the rest of the system means the colour and profile will match exactly, and there is a single point of contact for the full coping supply. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-coping-case-study\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium coping case study\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e shows the full 3mm system in use on a live UK commercial project.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eNew-Build Housing Developments with NHBC Registration\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eVolume housebuilders on NHBC-registered developments across Essex, the Home Counties and the wider South East commonly specify 3mm aluminium coping for flat roof parapet details on house types that include flat-roofed elements. Whether the application is a garage block, a covered walkway, an amenity building or a parapet on a terrace unit, the 3mm system is the specification that supports the NHBC warranty position. The closed stopend is ordered as part of the full \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping system\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e alongside the lengths, corners and upstands for each house type, typically as a package order for each phase of the development.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eExposed and Coastal Sites\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor flat roof parapets on buildings within a few kilometres of the Essex, Suffolk or Kent coastlines, or on open-aspect sites exposed to prevailing south-westerly winds, the 3mm gauge is the appropriate coping specification. The heavier gauge provides greater resistance to the wind uplift forces that an exposed parapet experiences, and the fully sealed closed stopend is particularly important on these sites: a poorly sealed end detail on an exposed coastal building will fail faster than almost anywhere else. Sites in Southend-on-Sea, Mersea Island, Clacton and along the Thames Estuary warrant the 3mm system as standard. Use the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e at every joint without exception on exposed-site installations.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eSchools, Healthcare and Public Sector Buildings\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSchools, GP surgeries, dental practices, care homes and other public sector buildings typically carry a long-term asset management requirement. The facilities team or asset manager expects the coping system to remain maintenance-free for a defined period, usually 25 years or more, and the specification reflects that. The 3mm closed stopend, as part of a complete 3mm flat coping system from a single UK manufacturer, gives the client a traceable specification, consistent colour across the full perimeter, and a documented powder coat standard that supports long-term warranty and maintenance planning.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhen should I use the 3mm stopend instead of the 2mm?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUse the 3mm stopend whenever you are using 3mm flat coping lengths on the project. The stopend gauge must match the coping gauge. Beyond that, choose 3mm for commercial projects, NHBC-registered new builds, exposed or coastal sites, taller buildings with higher parapets, and any project where the specification document calls for 3mm. For straightforward domestic rear extensions and outbuildings in sheltered locations, 2mm is usually the appropriate choice. The 2mm and 3mm stopends are the same profile and the same size range; the difference is the material thickness and the corresponding stiffness and wind resistance.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eHow do I calculate the correct stopend size for a 3mm coping system?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe calculation is the same for 3mm as for 2mm: measure the wall width at the top of the parapet and add 170mm to account for both 75mm external legs and both 10mm returns (75 + 75 + 10 + 10 = 170). A 265mm wide wall gives a stopend size of 435mm. A 390mm wide wall gives 560mm. Select the exact size from the available 29 options (185mm to 885mm in 25mm steps). If your figure falls between two sizes, order the next size up. The quickest method on site is to measure the overall width of the installed coping profile across the top: that measurement is the stopend size.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eIs this stopend compatible with the 2mm flat coping lengths?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNo. The 3mm stopend is designed for the 3mm flat coping system. Although the overall profile shape is the same as the 2mm version, the wall thickness is different, which means the fit at the junction between a 3mm stopend and a 2mm straight length will not be correct. Always match the stopend gauge to the gauge of the straight lengths it terminates. If you are using 2mm lengths, order the 2mm closed stopend. If you are using 3mm lengths, use this 3mm version.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eDoes this product need a specific bracket?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes. For a 3mm aluminium flat coping system, the 5mm aluminium coping bracket is the correct specification. The 5mm bracket is heavier and provides greater fixing resistance than the 4mm bracket, which is appropriate for the heavier gauge coping and the more demanding sites where 3mm is typically specified. On exposed sites or tall buildings where wind uplift calculations are required, the bracket spacing should be confirmed with the structural engineer. Do not use the 4mm bracket as a substitute on a commercial or exposed-site 3mm coping installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat is the difference between the closed stopend and the stopend upstand on this system?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe closed stopend seals the end face of the coping run completely with no opening. It is the standard terminal piece for most flat coping run terminations: wherever the coping simply ends at a wall edge, a corner, or an abutment with a building face. The stopend upstand has an upstand element at the end that allows the coping to terminate against a rising detail or allows water to drain over the end of the run. On the majority of commercial flat roof parapets, the closed stopend is correct at most or all terminations. The upstand is a specific detail for specific conditions. If the architectural drawings do not specify an upstand at a particular end, use the closed stopend.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003ePart of a Complete 3mm Flat Coping System\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis stopend is one component in the complete 3mm aluminium flat coping system with a 75mm external leg. On a commercial project, all components should be ordered from the same manufacturer to guarantee matching profiles, consistent powder coat colour across the full perimeter, and a single-source system with a clear specification. The full 3mm flat coping system with 75mm external leg includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 1m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 2m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 3m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-corner-90\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping 90 Degree Corner | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping 135 Degree Corner | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - Closed Stopend | 75mm External Leg (this product)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-upstand-75mm-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - Stopend Upstand | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-t-junction\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 90 Degree T-Junction | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm Aluminium Coping Bracket\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Sealant 300ml\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Fasteners (Metal)\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor the full range overview across both 2mm and 3mm gauges, visit the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eAluminium Flat Copings collection page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. If the project calls for 2mm coping, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm flat coping closed stopend\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is the equivalent terminal piece for the lighter gauge system.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eStandards and Compliance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAluminium flat coping systems on UK flat roof parapets are specified and detailed under \u003c\/span\u003e\u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-6229\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eBS 6229:2018 - Flat Roofs with Continuously Supported Flexible Waterproof Coverings\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. This standard covers parapet and edge detailing for flat roofs in the UK, including the requirements for coping system terminations. A 3mm aluminium flat coping system with properly fitted and sealed closed stopends at every run termination is consistent with the edge protection and weathertightness requirements set out in the standard.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe external grade polyester powder coat finish applied to all Online Metal Store Ltd aluminium flat coping components, including this 3mm closed stopend, meets the requirements of \u003c\/span\u003e\u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-en-12206-1\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eBS EN 12206-1 - Organic Coatings on Aluminium and Aluminium Alloys\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. On a commercial project where the coping specification forms part of a contract document or long-term asset management plan, having a documented coating standard across every component in the system is part of the specification compliance requirement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor NHBC-registered new-build projects, Chapter 7.1 of the NHBC Standards covers flat roof and parapet wall construction requirements. A 3mm aluminium flat coping system with correctly specified and installed stopends supports the NHBC warranty position and is consistent with the parapet detailing requirements for new-build completions across all housing types.\u003c\/span\u003e\u003c\/p\u003e","brand":"Online Metal Store","offers":[{"title":"510mm","offer_id":42314562273364,"sku":"AC3-CS-75-510","price":72.8,"currency_code":"GBP","in_stock":true},{"title":"535mm","offer_id":42314562306132,"sku":"AC3-CS-75-535","price":73.92,"currency_code":"GBP","in_stock":true},{"title":"560mm","offer_id":42314562338900,"sku":"AC3-CS-75-560","price":75.04,"currency_code":"GBP","in_stock":true},{"title":"585mm","offer_id":42314562371668,"sku":"AC3-CS-75-585","price":76.16,"currency_code":"GBP","in_stock":true},{"title":"610mm","offer_id":42314562404436,"sku":"AC3-CS-75-610","price":77.28,"currency_code":"GBP","in_stock":true},{"title":"635mm","offer_id":42314562437204,"sku":"AC3-CS-75-635","price":78.4,"currency_code":"GBP","in_stock":true},{"title":"660mm","offer_id":42314562469972,"sku":"AC3-CS-75-660","price":79.52,"currency_code":"GBP","in_stock":true},{"title":"685mm","offer_id":42314562502740,"sku":"AC3-CS-75-685","price":80.64,"currency_code":"GBP","in_stock":true},{"title":"710mm","offer_id":42314562535508,"sku":"AC3-CS-75-710","price":81.76,"currency_code":"GBP","in_stock":true},{"title":"735mm","offer_id":42314562568276,"sku":"AC3-CS-75-735","price":82.88,"currency_code":"GBP","in_stock":true},{"title":"760mm","offer_id":42314562601044,"sku":"AC3-CS-75-760","price":84.0,"currency_code":"GBP","in_stock":true},{"title":"785mm","offer_id":42314562633812,"sku":"AC3-CS-75-785","price":85.12,"currency_code":"GBP","in_stock":true},{"title":"810mm","offer_id":42314562666580,"sku":"AC3-CS-75-810","price":86.24,"currency_code":"GBP","in_stock":true},{"title":"835mm","offer_id":42314562699348,"sku":"AC3-CS-75-835","price":87.36,"currency_code":"GBP","in_stock":true},{"title":"860mm","offer_id":42314562732116,"sku":"AC3-CS-75-860","price":88.48,"currency_code":"GBP","in_stock":true},{"title":"885mm","offer_id":42314562764884,"sku":"AC3-CS-75-885","price":89.6,"currency_code":"GBP","in_stock":true},{"title":"910mm","offer_id":42314562797652,"sku":"AC3-CS-75-910","price":90.72,"currency_code":"GBP","in_stock":true},{"title":"935mm","offer_id":42314562830420,"sku":"AC3-CS-75-935","price":91.84,"currency_code":"GBP","in_stock":true},{"title":"960mm","offer_id":42314562863188,"sku":"AC3-CS-75-960","price":92.96,"currency_code":"GBP","in_stock":true},{"title":"985mm","offer_id":42314562895956,"sku":"AC3-CS-75-985","price":94.08,"currency_code":"GBP","in_stock":true},{"title":"1010mm","offer_id":42314562928724,"sku":"AC3-CS-75-1010","price":95.2,"currency_code":"GBP","in_stock":true},{"title":"1035mm","offer_id":42314562961492,"sku":"AC3-CS-75-1035","price":96.32,"currency_code":"GBP","in_stock":true},{"title":"1060mm","offer_id":42314562994260,"sku":"AC3-CS-75-1060","price":97.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1588\/2580\/files\/Flat_20Coping_20-_20Closed_20Stopend.jpg?v=1774517145"},{"product_id":"3mm-aluminium-coping-corner-90","title":"3mm Aluminium Flat Coping – 90° Corner | 75mm External Leg","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThere are jobs where 2mm aluminium flat coping is exactly right. A domestic rear extension in a sheltered suburban setting with a modest parapet wall width is a typical example. But the moment you move onto a commercial flat roof, a taller building, an exposed site on the Essex coast or the Thames Estuary, or a parapet wall that is wider and therefore puts more leverage on the corner piece, the specification changes. A 3mm gauge corner is not just marginally thicker than a 2mm. It is stiffer, it resists wind uplift more effectively, and it is the gauge that most commercial specifiers and NHBC-registered builders reach for on new-build projects where the coping is expected to perform for decades without remedial work.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis 3mm aluminium flat coping 90 degree corner is the right-angle component for the 3mm flat coping system with a 75mm external leg. It covers right-angle parapet corners with the same clean, pre-formed profile as the 2mm version but with the added rigidity and durability that heavier-specification projects require. Manufactured in Chelmsford, Essex, and available powder coated in any RAL colour, it is the commercial-grade corner for flat roof parapets that need to last.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis corner is one component in the Online Metal Store Ltd 3mm aluminium flat coping range with a 75mm external leg. It handles right-angle turns in parapet walls where two flat coping runs meet at 90 degrees, the most common corner on rectangular flat-roof commercial buildings, extensions, and boundary wall structures. The 75mm external leg provides the overhang and drip edge that carries rainwater away from the wall face, and the internal leg matches the 3mm flat coping profile so the junction between the corner and the straight runs is flush and weathertight throughout. The matching \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping lengths\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e are available in 1m, 2m and 3m sections for the straight parapet runs, and the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping 135 degree corner\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e covers obtuse-angle junctions in the same gauge and leg size.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 3mm gauge is the standard specification for commercial and exposed-site flat roof copings in the UK. It provides greater resistance to wind uplift forces, better rigidity across wider wall widths, and a longer fatigue life under the repeated thermal expansion and contraction cycles that a fully exposed aluminium coping experiences over a British building lifetime. The powder coat finish is an external grade polyester applied to the same specification as the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-90-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm flat coping 90 degree corner\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, and it is available in any RAL colour to match the straight lengths, stopends and brackets in your order. For an overview of the full 3mm aluminium flat coping range, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium flat copings collection page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e covers all gauges and leg sizes.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eGreater Rigidity for Commercial and Exposed-Site Specification\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe extra millimetre of gauge makes a meaningful difference to the stiffness of the corner profile. On a domestic extension with a short parapet run and a sheltered aspect, 2mm is sufficient. On a commercial flat roof on a building of any real height, on a site exposed to prevailing south-westerly winds across open ground, or on a coastal location in Essex, Kent or Suffolk where salt-laden air and higher wind speeds are the norm, 3mm provides the rigidity and wind uplift resistance that the project demands. Where a structural engineer or specifier has called for 3mm on the project, this is the correct component.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eConsistent Profile Across the Full 3mm System\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe corner is pressed to the same profile as the 3mm flat coping lengths running either side of it. There is no step, no mismatch and no visible gauge transition at the junction. On a commercial parapet where the coping is visible from ground level or from adjacent buildings, profile consistency matters as much as colour consistency. Ordering the corner alongside the straight lengths, stopends and brackets ensures that everything is fabricated to the same specification and finished in the same batch.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003ePowder Coated in Any RAL Colour\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCommercial projects almost always have a specified coping colour, whether that is anthracite grey to match the window frames on a new office building, signal white on a healthcare facility, or a project-specific RAL that the architect has called up in the specification. This corner is available in any RAL colour, with no minimum order quantity on standard colours. When the corner, lengths, stopends and brackets are ordered together, all components go through the same powder coating batch at the Chelmsford facility and arrive colour-matched to the same standard.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCorrosion Resistance on Demanding Sites\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAluminium is the material of choice for parapet coping on buildings where long service life and low maintenance are non-negotiable. It does not rust. It forms a natural oxide layer that protects the base metal without any additional treatment, and the external grade powder coat extends that protection across the full surface of the profile. For coastal sites, urban environments with higher pollution levels, or buildings where accessing the parapet for maintenance is difficult or expensive, a 3mm aluminium flat coping system is a sound long-term investment.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eUK Manufactured for Fast Programme Delivery\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis corner is made at the Online Metal Store Ltd facility in Chelmsford, Essex. For commercial programmes in the South East, the Home Counties, or anywhere across the UK, manufacturing from a UK base means shorter lead times than sourcing from a European or overseas supplier. On a construction programme where the watertight stage is on the critical path, a UK-manufactured coping system with fast turnaround removes a potential delay from the schedule.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMaterial: \u003c\/strong\u003e\u003cspan\u003e3mm grade aluminium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eProfile:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eFlat coping\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCorner Angle: \u003c\/strong\u003e\u003cspan\u003e90 degrees (right angle, for walls meeting at a standard perpendicular junction)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eExternal Leg: \u003c\/strong\u003e\u003cspan\u003e75mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003ePolyester powder coating, external grade\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eColour: \u003c\/strong\u003e\u003cspan\u003eAny RAL colour to order\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eCompatible System:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e3mm Aluminium Flat Coping range | 75mm External Leg\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eRecommended Bracket:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003e5mm Aluminium Coping Bracket (use 5mm bracket with 3mm coping for correct specification)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eCountry of Manufacture:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eUnited Kingdom (Chelmsford, Essex)\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e2mm or 3mm: Choosing the Right Gauge for Your Project\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBoth gauges use the same 75mm external leg profile and the same powder coat finish. The decision is about specification, not appearance. Here is a practical guide:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eChoose 2mm for: domestic flat roof extensions, box dormers, flat-roofed garages and outbuildings in sheltered suburban or rural settings, residential projects where the parapet is low and the wall width is modest, and projects where budget is a primary constraint and the site exposure is low.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eChoose 3mm for: commercial and light industrial flat roofs, new-build housing developments where NHBC standards apply, taller buildings and higher parapets where wind uplift forces are greater, exposed sites including coastal locations, hilltop positions, and open-aspect sites in Essex, Kent, Suffolk and across the South East, and any project where the structural engineer or specifier has called up 3mm in the specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eMixed-gauge projects: if some sections of a parapet require 3mm for structural reasons while others do not, it is generally cleaner to specify 3mm throughout and keep the system consistent. Mixing gauges on the same parapet run creates profile transitions at the joints that are difficult to detail neatly.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eCorner angles: this product covers right-angle 90 degree corners. If any part of your parapet turns at an obtuse angle wider than 90 degrees, the matching 3mm flat coping 135 degree corner is available in the same range for that junction.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eHow to Fit a 3mm Flat Coping Corner\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePlan the bracket positions for both legs of the corner before fixing. Work out the straight coping runs on each side and confirm that the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm aluminium coping brackets\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e are positioned at the correct centres for the 3mm system. The brackets immediately adjacent to the corner should give the corner wings full bearing without any unsupported overhang at the junction. At 3mm gauge, the corner piece is heavier than the 2mm equivalent, so handling on site is straightforward but the bracket positions need to be accurate.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSet the corner piece in position and dry-check the alignment with the straight 3mm flat coping lengths running either side before committing to any permanent fixing. The profiles must sit flush at the junction between the corner wings and the straight runs. Once the position is confirmed, apply \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e along the internal face of both joints before pressing the straight coping lengths home. On a commercial project with a long parapet run, the sealant bead at each corner junction is particularly important because it is the only thing preventing water from tracking back under the coping at a joint. Do not skip or reduce the sealant application.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFix the straight lengths to the brackets using \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded fasteners\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e in the matching RAL colour. On a commercial project with a metal substrate or structural steel curb, use the metal fasteners rather than timber fixings. Work along both legs from the corner outward, checking alignment as you go. Finish with a neat sealant bead on the external face of each corner joint.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhere the 3mm Flat Coping 90 Degree Corner Is Used\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCommercial Flat Roof Parapets\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCommercial buildings are the primary market for 3mm aluminium flat coping. Retail units, office buildings, light industrial units, distribution centres and mixed-use developments across Essex, East London and the wider South East commonly specify 3mm for the parapet coping system. The corner pieces are required at every right-angle turn in the perimeter, and on a commercial project the specifier will typically call for all system components, corner pieces, lengths, stopends and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecoping brackets\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, to be ordered from the same manufacturer to ensure colour and profile consistency. The \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-coping-case-study\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium coping case study\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e demonstrates this system in use on a live UK commercial project.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eNew-Build Housing Developments\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNHBC-registered housebuilders on new-build developments across the Home Counties, Essex and the South East frequently specify 3mm aluminium coping for parapet details on flat-roof elements. Whether that is a flat-roofed garage block, a covered walkway, a communal roof terrace or a parapet on a semi-detached house, the 3mm specification is common where the NHBC warranty position requires a heavier gauge. Ordering the corner pieces alongside the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping lengths\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003estopends\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e from a single UK supplier simplifies the supply chain on a volume development.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eExposed and Coastal Sites\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eParapet copings on exposed sites take more punishment than almost any other building element. Wind-driven rain at pressure, frost cycles through winter, and the salt-laden air that reaches sites within a few kilometres of the Essex and Kent coasts all put demands on the coping material and its fixings. The 3mm gauge provides greater resistance to the repeated loading from wind pressure and uplift that an exposed parapet corner experiences over its service life. For sites in Southend-on-Sea, Clacton, Mersea Island, or anywhere on the Thames Estuary shoreline, the 3mm specification is the right one.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eSchools, Care Homes and Public Buildings\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePublic buildings including schools, care homes, GP surgeries and community facilities almost always carry a commercial coping specification. The asset will be maintained by a facilities management team rather than an owner-occupier, and the expectation is that the coping system will require no intervention for at least 25 years. Specifying 3mm coping on these buildings, and ordering the full system from \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium flat copings\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e through to the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e from a single UK manufacturer, gives the client and the contractor a system with a traceable specification and a clear maintenance position.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch4\u003e\u003cspan\u003eWhen should I use 3mm aluminium flat coping instead of 2mm?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUse 3mm when the project is commercial rather than domestic, when the site is exposed to higher wind loads, when the parapet wall is wide or tall, when an NHBC or structural specification calls for 3mm, or when the building is in a coastal or high-exposure environment. For straightforward domestic rear extensions in sheltered locations, 2mm is usually the right choice. For anything else, 3mm is the safer and more durable specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eIs the 3mm corner compatible with 2mm flat coping lengths?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNo. The 3mm corner is designed to work with 3mm flat coping lengths in the 75mm external leg range. While the overall profile shape is the same, the wall thickness is different, which means the junction between a 3mm corner and a 2mm straight length will not be flush. Always match the corner gauge to the straight lengths you are using. If you are using 3mm lengths, use this 3mm corner. If you are using 2mm lengths, use the 2mm 90 degree corner from the same range.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eDo I need a different bracket for 3mm coping?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes. For 3mm aluminium flat coping, the 5mm aluminium coping bracket is the correct specification. The 5mm bracket is heavier and provides greater fixing resistance, which is appropriate for the heavier gauge coping and the more demanding sites where 3mm is typically used. Using the correct bracket also ensures the system meets wind uplift requirements on exposed sites. Do not use the 4mm bracket with 3mm coping on commercial or exposed-site projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eCan this corner be ordered in any RAL colour?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes. Like all components in the 3mm flat coping range, this corner is available powder coated in any RAL colour. Specify the RAL number at the time of order and the corner will be finished in the same colour as the straight lengths, stopends and brackets in the order. There are no minimum order quantities for standard RAL colours. If your project requires a BS colour or a bespoke finish, contact Online Metal Store Ltd to discuss the specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat is the difference between the 3mm 90 degree and 135 degree corners?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBoth are 3mm aluminium flat coping corners in the 75mm external leg range, but they cover different angles. The 90 degree corner is for right-angle parapet junctions, which is the standard corner on rectangular buildings. The 135 degree corner is for obtuse-angle junctions, wider than a right angle, which occurs on buildings with L-shaped plan forms, angled boundary walls, or irregular plot configurations. Many commercial projects need both corner types on the same parapet. Order both from the same range and they will be finished in a matching colour and profile.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003ePart of a Complete 3mm Flat Coping System\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis corner is one component in the complete 3mm aluminium flat coping system with a 75mm external leg. Ordering all components from Online Metal Store Ltd ensures matching profiles, consistent powder coat colour across the full perimeter, and a single UK-manufactured system with a clear specification. The full 3mm flat coping system with 75mm external leg includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 1m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-coping-2m-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 2m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 3m Length | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping 90 Degree Corner | 75mm External Leg (this product)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping 135 Degree Corner | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-stopend-75mm-ex\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - Closed Stopend | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-upstand-75mm-1\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - Stopend Upstand | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-t-junction\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Aluminium Flat Coping - 90 Degree T-Junction | 75mm External Leg\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/5mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e5mm Aluminium Coping Bracket\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Sealant 300ml\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eColour Coded Fasteners (Metal)\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor the full range overview, visit the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-flat-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eAluminium Flat Copings collection page\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. If you are working on a domestic project where 2mm is the appropriate gauge, the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-90-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm flat coping 90 degree corner\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e is the equivalent component at the lighter specification.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eStandards and Compliance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAluminium parapet coping on flat roof constructions in the UK is specified and detailed in accordance with \u003c\/span\u003e\u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-6229\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eBS 6229:2018 - Flat Roofs with Continuously Supported Flexible Waterproof Coverings\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. This standard covers edge and parapet detailing requirements for flat roofs and provides the technical basis for specifying coping systems on commercial and residential projects. The 3mm gauge is consistent with the heavier-specification requirements for commercial and exposed-site applications referenced within the standard.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe powder coat finish on all Online Metal Store Ltd aluminium coping products is applied in accordance with \u003c\/span\u003e\u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-en-12206-1\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eBS EN 12206-1 - Organic Coatings on Aluminium and Aluminium Alloys\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, which defines the performance requirements for external-grade powder organic coatings on aluminium. On a commercial project where the coping specification forms part of a warranty or long-term maintenance commitment, the coating standard is as important as the substrate gauge.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor new build projects registered with NHBC, Chapter 7.1 of the NHBC Standards covers flat roof and parapet wall construction. The 3mm aluminium flat coping system is consistent with NHBC parapet detailing requirements and supports the warranty position on new build completions where heavier gauge coping is specified.\u003c\/span\u003e\u003c\/p\u003e","brand":"Online Metal Store Ltd","offers":[{"title":"510mm","offer_id":42314564042836,"sku":"AC3-90-75-510","price":87.84,"currency_code":"GBP","in_stock":true},{"title":"535mm","offer_id":42314564075604,"sku":"AC3-90-75-535","price":93.24,"currency_code":"GBP","in_stock":true},{"title":"560mm","offer_id":42314564108372,"sku":"AC3-90-75-560","price":98.64,"currency_code":"GBP","in_stock":true},{"title":"585mm","offer_id":42314564141140,"sku":"AC3-90-75-585","price":104.04,"currency_code":"GBP","in_stock":true},{"title":"610mm","offer_id":42314564173908,"sku":"AC3-90-75-610","price":109.44,"currency_code":"GBP","in_stock":true},{"title":"635mm","offer_id":42314564206676,"sku":"AC3-90-75-635","price":114.84,"currency_code":"GBP","in_stock":true},{"title":"660mm","offer_id":42314564239444,"sku":"AC3-90-75-660","price":120.24,"currency_code":"GBP","in_stock":true},{"title":"685mm","offer_id":42314564272212,"sku":"AC3-90-75-685","price":125.64,"currency_code":"GBP","in_stock":true},{"title":"710mm","offer_id":42314564304980,"sku":"AC3-90-75-710","price":131.04,"currency_code":"GBP","in_stock":true},{"title":"735mm","offer_id":42314564337748,"sku":"AC3-90-75-735","price":136.44,"currency_code":"GBP","in_stock":true},{"title":"760mm","offer_id":42314564370516,"sku":"AC3-90-75-760","price":141.84,"currency_code":"GBP","in_stock":true},{"title":"785mm","offer_id":42314564403284,"sku":"AC3-90-75-785","price":147.24,"currency_code":"GBP","in_stock":true},{"title":"810mm","offer_id":42314564436052,"sku":"AC3-90-75-810","price":152.64,"currency_code":"GBP","in_stock":true},{"title":"835mm","offer_id":42314564468820,"sku":"AC3-90-75-835","price":158.04,"currency_code":"GBP","in_stock":true},{"title":"860mm","offer_id":42314564501588,"sku":"AC3-90-75-860","price":163.44,"currency_code":"GBP","in_stock":true},{"title":"885mm","offer_id":42314564534356,"sku":"AC3-90-75-885","price":168.84,"currency_code":"GBP","in_stock":true},{"title":"910mm","offer_id":42314564567124,"sku":"AC3-90-75-910","price":174.24,"currency_code":"GBP","in_stock":true},{"title":"935mm","offer_id":42314564599892,"sku":"AC3-90-75-935","price":179.64,"currency_code":"GBP","in_stock":true},{"title":"960mm","offer_id":42314564632660,"sku":"AC3-90-75-960","price":185.04,"currency_code":"GBP","in_stock":true},{"title":"985mm","offer_id":42314564665428,"sku":"AC3-90-75-985","price":190.44,"currency_code":"GBP","in_stock":true},{"title":"1010mm","offer_id":42314564698196,"sku":"AC3-90-75-1010","price":195.84,"currency_code":"GBP","in_stock":true},{"title":"1035mm","offer_id":42314564730964,"sku":"AC3-90-75-1035","price":201.24,"currency_code":"GBP","in_stock":true},{"title":"1060mm","offer_id":42314564763732,"sku":"AC3-90-75-1060","price":206.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1588\/2580\/files\/Flat_20Coping_20-_2090-Degree_20Corner.jpg?v=1774517148"},{"product_id":"aluminium-coping-t-junction","title":"3mm Aluminium Flat Coping – 90° T-Junction | 75mm External Leg","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn wider parapet walls, typically from 510mm upward, the coping system needs a heavier gauge to maintain rigidity across the span. At a T-shaped wall intersection where three coping runs meet, the junction piece carries the greatest load and spans the widest area. A 2mm T-junction may flex on a wide commercial parapet. The 3mm version provides the additional rigidity needed to keep the coping flat, stable and windproof at the most complex point in the system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis 3mm aluminium flat coping T-junction connects three coping runs at a 90 degree T-shaped intersection, maintaining a weathertight seal across all three directions. It is powder coated in the same RAL colour as the coping lengths, uses the same concealed fix bracket system, and is fabricated at our Chelmsford, Essex workshop. On commercial buildings, schools, apartment blocks and industrial units across the South East, this is the heavy duty fitting that holds the coping system together at every T-junction.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 3mm aluminium flat coping T-junction from \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eOnline Metal Store Ltd\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e connects three coping runs at a T-shaped parapet wall intersection. The 75mm external leg matches the standard leg dimension across the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm flat coping range\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. Available in 23 width options from 510mm to 1060mm, covering wider commercial parapet walls. Custom fabricated and powder coated in any RAL colour.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor narrower domestic walls (under 510mm), see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-cooping-junction-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm flat coping T-junction\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e which covers widths from 185mm. For standard changes of direction, see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm coping 135° corner\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. Browse the full \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium copings collection\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e3mm Heavy Duty Gauge for Wide Parapet Walls\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 3mm thickness provides 50% more rigidity than the 2mm version. On wider parapets (510mm and above), this additional gauge prevents the coping from flexing or drumming in wind. The T-junction spans the widest area of any fitting in the coping system, so the heavier gauge matters most here.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eConnects Three Coping Runs at One Point\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFactory formed to connect the main coping run with a branch wall from one side. Creates a clean, weathertight transition at the intersection without multiple site-cut joints.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e75mm External Leg for Consistent Profile\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 75mm downstand matches the standard leg dimension across the 3mm flat coping range.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e23 Width Options for Commercial Walls\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAvailable from 510mm to 1060mm, covering the wider parapet walls found on commercial buildings, apartment blocks and industrial units.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eConcealed Fix Bracket System\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSupplied with fixing brackets. The coping clicks down onto the brackets with no visible screws.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePowder Coated in Any RAL Colour\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eColour matched before dispatch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUK Manufactured\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFabricated at our workshop in Chelmsford, Essex.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMaterial: \u003c\/strong\u003e\u003cspan\u003e3mm aluminium (heavy duty)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eType: \u003c\/strong\u003e\u003cspan\u003eFlat coping 90° T-junction (tee piece)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eExternal Leg: \u003c\/strong\u003e\u003cspan\u003e75mm downstand\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAvailable Widths: \u003c\/strong\u003e\u003cspan\u003e510mm, 535mm, 560mm, 585mm, 610mm, 635mm, 660mm, 685mm, 710mm, 735mm, 760mm, 785mm, 810mm, 835mm, 860mm, 885mm, 910mm, 935mm, 960mm, 985mm, 1010mm, 1035mm, 1060mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003ePolyester powder coated in any RAL colour\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFixing: \u003c\/strong\u003e\u003cspan\u003eConcealed bracket system (brackets supplied)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFire Classification: \u003c\/strong\u003e\u003cspan\u003eA2-s1,d0 under BS EN 13501-1\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eManufactured: \u003c\/strong\u003e\u003cspan\u003eChelmsford, Essex, United Kingdom\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePrice: \u003c\/strong\u003e\u003cspan\u003eFrom £118.80 ex. VAT (£142.56 inc. VAT)\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003e2mm vs 3mm Coping T-Junction: Which Do I Need?\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e2mm T-Junction\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSuitable for narrower domestic and light commercial parapet walls. Width options from 185mm. Lower cost. See the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-cooping-junction-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm flat coping T-junction\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e3mm T-Junction (This Product)\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eDesigned for wider commercial parapet walls from 510mm. The heavier gauge prevents flexing on wide spans and provides greater wind resistance. Choose 3mm when the wall width exceeds 500mm or when the specification calls for heavy duty coping.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eHow to Fit a 3mm Aluminium Coping T-Junction\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFix the supplied brackets to the top of the wall at the T-junction intersection. Apply EPDM seal tape to the brackets. Click the T-junction piece down onto the brackets, ensuring it seats firmly and aligns with the coping runs on all three sides. Leave a 2 to 3mm expansion gap between the T-junction and each adjoining coping length.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEnsure the waterproof membrane underneath is correctly detailed before fitting. For full step by step guidance, see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/blogs\/news\/how-to-install-aluminium-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ehow to install aluminium coping guide\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhere 3mm Coping T-Junctions Are Used\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCommercial Buildings with Wide Parapets\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOffice blocks, retail units and industrial buildings with parapet walls over 500mm wide. The 3mm gauge provides the rigidity needed at T-junctions on these wider spans.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eApartment Blocks and High Rise Residential\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn apartment buildings across Chelmsford, Brentwood, Colchester and the South East where the parapet is a prominent architectural feature. The A2-s1,d0 fire classification makes 3mm aluminium coping suitable for buildings of any height.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eSchools and Public Buildings\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn publicly funded projects where heavy duty specification and long service life are requirements.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat is the difference between 2mm and 3mm coping T-junctions?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 3mm version is 50% thicker, providing greater rigidity on wider parapet walls. The 2mm version is suitable for narrower walls (from 185mm). The 3mm version starts at 510mm width and is designed for commercial applications where the wider span needs a heavier gauge. See the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-cooping-junction-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e2mm T-junction\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e for narrower walls.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhen do I need a 3mm coping T-junction?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhen the parapet wall width exceeds 500mm, when the specification calls for heavy duty coping, or on exposed commercial buildings where wind loading is a concern. For domestic walls under 500mm, the 2mm version is usually sufficient.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat size 3mm coping T-junction do I need?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMeasure the wall thickness and select the matching width from the 23 options (510mm to 1060mm). The overall coping width includes the 75mm downstand and returns on each side.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eHow do you fit a 3mm coping T-junction?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFix brackets to the wall top. Apply EPDM tape. Click the T-junction down. Leave a 2 to 3mm expansion gap on all three sides.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eCan the 3mm coping T-junction be colour matched?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes. Powder coated in any RAL colour.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003ePart of a Complete Flat Coping System\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 3mm T-junction is one fitting in the heavy duty flat coping system:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/3mm-aluminium-flat-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Flat Coping 3m Length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e – main coping length\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Coping 135° Corner\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e – change of direction\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-t-junction\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e3mm Coping T-Junction\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e – this product\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/4mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eCoping Bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e – concealed fixing bracket\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBrowse the full \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium copings collection\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. The coping system works alongside \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/fascia-soffits\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium fascia and soffits\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-roof-edge-drip-trim-3m\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003edrip trims\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and the full \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/rainwater-goods\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003erainwater goods range\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. For a completed project, see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/mellish-street-aluminium-coping-case-study-london\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eMellish Street coping case study\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eStandards and Compliance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eThe powder coat finish is applied in line with \u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-en-12206-1\/\" target=\"_blank\" rel=\"noopener\"\u003eBS EN 12206-1\u003c\/a\u003e for powder organic coatings on aluminium. The coping system achieves a fire classification of A2-s1,d0 under BS EN 13501-1, making it non-combustible and suitable for buildings of any height including high rise residential over 18 metres.\u003c\/p\u003e","brand":"Online Metal Store","offers":[{"title":"510mm","offer_id":42314566860884,"sku":"AC3-T90-75-510","price":118.8,"currency_code":"GBP","in_stock":true},{"title":"535mm","offer_id":42314566893652,"sku":"AC3-T90-75-535","price":123.12,"currency_code":"GBP","in_stock":true},{"title":"560mm","offer_id":42314566926420,"sku":"AC3-T90-75-560","price":127.44,"currency_code":"GBP","in_stock":true},{"title":"585mm","offer_id":42314566959188,"sku":"AC3-T90-75-585","price":131.76,"currency_code":"GBP","in_stock":true},{"title":"610mm","offer_id":42314566991956,"sku":"AC3-T90-75-610","price":136.08,"currency_code":"GBP","in_stock":true},{"title":"635mm","offer_id":42314567024724,"sku":"AC3-T90-75-635","price":140.4,"currency_code":"GBP","in_stock":true},{"title":"660mm","offer_id":42314567057492,"sku":"AC3-T90-75-660","price":144.72,"currency_code":"GBP","in_stock":true},{"title":"685mm","offer_id":42314567090260,"sku":"AC3-T90-75-685","price":149.04,"currency_code":"GBP","in_stock":true},{"title":"710mm","offer_id":42314567123028,"sku":"AC3-T90-75-710","price":153.36,"currency_code":"GBP","in_stock":true},{"title":"735mm","offer_id":42314567155796,"sku":"AC3-T90-75-735","price":157.68,"currency_code":"GBP","in_stock":true},{"title":"760mm","offer_id":42314567188564,"sku":"AC3-T90-75-760","price":162.0,"currency_code":"GBP","in_stock":true},{"title":"785mm","offer_id":42314567221332,"sku":"AC3-T90-75-785","price":166.32,"currency_code":"GBP","in_stock":true},{"title":"810mm","offer_id":42314567254100,"sku":"AC3-T90-75-810","price":170.64,"currency_code":"GBP","in_stock":true},{"title":"835mm","offer_id":42314567286868,"sku":"AC3-T90-75-835","price":174.96,"currency_code":"GBP","in_stock":true},{"title":"860mm","offer_id":42314567319636,"sku":"AC3-T90-75-860","price":179.28,"currency_code":"GBP","in_stock":true},{"title":"885mm","offer_id":42314567352404,"sku":"AC3-T90-75-885","price":183.6,"currency_code":"GBP","in_stock":true},{"title":"910mm","offer_id":42314567385172,"sku":"AC3-T90-75-910","price":187.92,"currency_code":"GBP","in_stock":true},{"title":"935mm","offer_id":42314567417940,"sku":"AC3-T90-75-935","price":192.24,"currency_code":"GBP","in_stock":true},{"title":"960mm","offer_id":42314567450708,"sku":"AC3-T90-75-960","price":196.56,"currency_code":"GBP","in_stock":true},{"title":"985mm","offer_id":42314567483476,"sku":"AC3-T90-75-985","price":200.88,"currency_code":"GBP","in_stock":true},{"title":"1010mm","offer_id":42314567516244,"sku":"AC3-T90-75-1010","price":205.2,"currency_code":"GBP","in_stock":true},{"title":"1035mm","offer_id":42314567549012,"sku":"AC3-T90-75-1035","price":209.52,"currency_code":"GBP","in_stock":true},{"title":"1060mm","offer_id":42314567581780,"sku":"AC3-T90-75-1060","price":213.84,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1588\/2580\/files\/Flat_20Coping_20-_20T-Junction.jpg?v=1774517154"}],"url":"https:\/\/onlinemetalstore.co.uk\/collections\/3mm-aluminium-flat-coping.oembed","provider":"Online Metal Store Ltd","version":"1.0","type":"link"}