{"product_id":"aluminium-coping-corner-135-1","title":"2mm Aluminium Sloping Coping – 135° Internal Corner | 100mm External Leg","description":"\u003cp class=\"MsoNormal\"\u003eAngled parapet returns are easy to underestimate until water starts sitting in the wrong place. On a flat roof, terrace wall or low boundary detail, a poor internal corner can leave gaps, visible misalignment and weak points where driving rain, frost cycles and wind-driven moisture can get behind the coping run.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThat is why a made to order 135 degree internal coping corner matters. Whether the job is a domestic extension in Chelmsford, a terrace refurbishment in Brentwood, a school roof in Colchester or a small commercial unit near East London, the corner needs to match the slope, the width and the finish of the rest of the system.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe 2mm Aluminium Sloping Coping 135° Internal Corner is a pre-formed aluminium corner section used where two sloping coping runs meet at an inward 135 degree angle. It is designed for parapet walls, flat roof edges and architectural wall capping where a clean angled return is needed without trying to cut and join straight lengths on site.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis product is made from 2 mm aluminium with a 100 mm external leg and is available in widths from 185 mm to 885 mm. It is manufactured in Chelmsford, Essex, and supplied powder coated in the RAL colour selected for the project. For the full run, it should be planned alongside matching \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-sloping-coping\" target=\"_blank\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ealuminium sloping coping\u003c\/span\u003e\u003c\/a\u003e, suitable fixings and weathering accessories.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOnline Metal Store Ltd supplies this corner as part of a wider roof edge and parapet system, so the angle, finish and related components can be kept consistent. Where the same project also needs straight wall capping, trims or roof edge detailing, use the main \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-copings\" target=\"_blank\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ealuminium copings\u003c\/span\u003e\u003c\/a\u003e range and \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/collections\/trims-flashings-angles-1\" target=\"_blank\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003etrims, flashings and angles\u003c\/span\u003e\u003c\/a\u003e collection to keep everything aligned.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eKey Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eCleaner finish on angled internal returns\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eA 135 degree internal return is difficult to finish neatly with cut straight lengths. A pre-formed corner gives the coping run a cleaner visual line and reduces the risk of messy mitres, uneven laps or exposed edges. It is useful on angled parapet layouts, roof terraces and modern extensions where the finish is clearly visible from the ground or nearby windows.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eBuilt for UK weather and roof edge exposure\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eAluminium is well suited to damp UK conditions because it resists corrosion and performs well through rain, frost, sun exposure and coastal air. The sloped profile helps shed water away from the wall head, which helps reduce staining, ponding and freeze related damage around vulnerable parapet junctions.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003ePowder coated in any RAL colour\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThe corner can be powder coated to the selected RAL colour so it matches the straight coping, nearby fascia, window frames, rainwater goods or cladding. That is important on visible projects in places such as Billericay, Southend, Kent and the Home Counties, where colour consistency often matters as much as weather protection.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003e2 mm aluminium balances strength and handling\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThe 2 mm thickness gives the corner a strong, stable feel without making it awkward to move, position or fit on site. Roofers and builders can handle it more easily than heavier traditional materials, which helps when working at height or when manoeuvring around awkward parapet returns.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eMade to order for a better system match\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThe product is offered in a wide size range from 185 mm to 885 mm, so the corner can be selected to match the wall width and coping profile rather than forcing the installer to adapt a standard size. The correct width helps maintain the overhang, slope and visual balance across the whole run.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eUK manufactured with fast delivery support\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eManufacturing in Chelmsford, Essex gives UK contractors a more practical route than waiting for a generic imported part. For time-sensitive roofing work, housing developments, care homes, schools and domestic projects, local support helps reduce delays when colour, size or site requirements need checking.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eUseful for complete parapet detailing\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThis corner works best when treated as part of a complete coping detail, not a standalone trim. Pairing it with matching straight sections, \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/colour-coded-sealant-300ml\" target=\"_blank\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded sealant\u003c\/span\u003e\u003c\/a\u003e, and suitable \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\" target=\"_blank\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded metal fasteners\u003c\/span\u003e\u003c\/a\u003e helps the finished junction look more consistent and perform more reliably.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eProduct Name: \u003c\/b\u003e2mm Aluminium Sloping Coping 135° Internal Corner | 100mm External Leg\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eProduct Type: \u003c\/b\u003ePre-formed internal corner for sloping aluminium coping systems\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eAngle: \u003c\/b\u003e135 degree internal corner\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eMaterial: \u003c\/b\u003eAluminium\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eThickness: \u003c\/b\u003e2 mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eExternal Leg: \u003c\/b\u003e100 mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eProfile: \u003c\/b\u003eSloping coping corner\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eFinish: \u003c\/b\u003ePowder coated finish\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eColour Options: \u003c\/b\u003eAny RAL colour selected at order stage\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eAvailable Widths: \u003c\/b\u003e185 mm, 210 mm, 235 mm, 260 mm, 285 mm, 310 mm, 335 mm, 360 mm, 385 mm, 410 mm, 435 mm, 460 mm, 485 mm, 510 mm, 535 mm, 560 mm, 585 mm, 610 mm, 635 mm, 660 mm, 685 mm, 710 mm, 735 mm, 760 mm, 785 mm, 810 mm, 835 mm, 860 mm, 885 mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003ePrice Shown on Current Page: \u003c\/b\u003eFrom £57.60 ex VAT, £69.12 inc VAT\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 item made to the selected size and finish. Measurements should be checked before ordering.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb style=\"mso-bidi-font-weight: normal;\"\u003eBest Used With: \u003c\/b\u003eMatching sloping coping lengths, sealant, colour matched fasteners, roof edge trims and related parapet accessories\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eChoosing the Right Size \/ Width \/ Thickness\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe width should be selected from the actual wall or parapet build-up, allowing for the profile, overhang and project detail. Do not choose the closest size by eye, because small measurement errors can show clearly at internal corners.\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 narrower 185 mm to 285 mm sizes for slim garden walls, small parapet returns, porch roofs and compact domestic extensions where the wall build-up is modest.\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 mid-range 310 mm to 510 mm sizes for common UK extension parapets, terrace walls, Edwardian semis, Victorian terrace refurbishments and low-rise residential roof edges.\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 535 mm to 710 mm sizes where the wall build-up includes insulation, cavity zones, wider masonry or a deeper roof edge detail.\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 larger 735 mm to 885 mm sizes for commercial builds, larger housing developments, schools, care homes and broader parapet constructions where a standard narrow part will not cover the build-up.\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 same width across the straight coping and corner pieces unless a detailed drawing shows a deliberate transition.\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]--\u003eKeep the 2 mm thickness in mind when coordinating corners with other aluminium coping components, because inconsistent material thickness can affect the finished line.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eHow to Install \/ How to Fit\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eStart by checking the wall width, the angle of the internal return and the direction of the slope before ordering. The straight coping run and the corner must be set out together, especially on angled parapets where one small error can throw the joint line out across the rest of the roof edge.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eDry position the corner before fixing. Check that the 100 mm external leg sits correctly, the slope directs water away from the vulnerable wall head, and the adjacent coping lengths line up without forcing the metal. For related roof edge weathering, the \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 product may also be relevant where a roof covering or vertical upstand needs extra protection.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFix the system using the correct substrate-specific fasteners. For timber substrates, use \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. For metal substrates, use \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/metal-fasteners-ral-pack-25\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ecolour coded metal fasteners\u003c\/span\u003e\u003c\/a\u003e. Colour matched fixings help keep the finished corner looking tidy, especially on darker RAL colours such as anthracite grey or black.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSeal the correct joints and laps according to the project detail. 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 where sealing is required so the visible finish stays coordinated with the powder coated corner. Avoid overfilling the joint, because messy sealant lines can make a premium coping detail look rushed.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOnce fitted, check the corner from above and from the main viewing angle at ground level. A good installation should look continuous, shed water cleanly and avoid visible gaps at the internal return. On larger projects, keep one approved sample or drawing on site so each corner is fitted consistently.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eWhere This 135° Internal Coping Corner Is Used\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eAngled parapet walls on flat roof extensions\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eMany domestic extensions in Chelmsford, Brentwood and Basildon include angled roof lines where a standard 90 degree corner is not suitable. This 135 degree internal corner helps the coping follow the wall layout properly while keeping the finished roof edge neat and weather protected.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eRoof terraces with inward returns\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eOn roof terraces, the coping is often visible from close range. A pre-formed internal angle gives a cleaner finish than a site cut mitre and can be planned alongside matching \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 or sloped sections depending on the roof edge design.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eCommercial and residential parapet refurbishment\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eRefurbishment work often exposes old lead, cracked mortar, stained concrete or poorly joined capping pieces. Replacing those details with a made to order aluminium corner gives builders and roofing contractors a more consistent finish on offices, small retail units, apartment blocks and local authority buildings.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eNew-build housing and developer projects\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eFor housing developments and new-build schemes, repeatable detailing matters. A pre-formed 135 degree corner helps maintain a consistent line across multiple plots, especially where parapets, balconies or roof terraces share the same specification and RAL colour.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eProjects where appearance matters from the street\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eOn modern homes, schools, care homes and commercial frontages, coping is not just a protective component. It is part of the visible architectural finish. For project proof and inspiration, the \u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-coping-case-study\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003ealuminium coping case study\u003c\/span\u003e\u003c\/a\u003e can help show how a coordinated aluminium system supports a cleaner finished look.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\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; line-height: 125%; color: #2c3e50;\"\u003eWhat is a 135 degree internal coping corner?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eA 135 degree internal coping corner is a pre-formed metal corner used where two coping runs meet at an inward angled return. It is designed to continue the sloped coping profile around the parapet without relying on rough site cutting or a poorly aligned mitre.\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; line-height: 125%; color: #2c3e50;\"\u003eDo I need an internal corner or an external corner?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eYou need an internal corner when the wall turns inward and creates an inside angle. You need an external corner when the wall turns outward around an outside edge. If the drawing shows a 135 degree inward return, this product is the correct style. If the angle projects outward, use the external version instead.\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; line-height: 125%; color: #2c3e50;\"\u003eCan this corner be made to match my straight coping lengths?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eYes. The corner is available in the same width range shown on the product page and can be powder coated to the selected RAL colour. The best result comes from ordering the straight coping and corner pieces together so the finish, profile and measurements are coordinated.\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; line-height: 125%; color: #2c3e50;\"\u003eIs aluminium better than lead for this type of corner?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eAluminium is often a better choice for modern parapet coping because it is lighter, corrosion resistant and easier to colour match. Lead can still have a role on listed buildings or conservation work where a traditional material is requested by the project team or conservation officer.\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; line-height: 125%; color: #2c3e50;\"\u003eHow many 135 degree internal corners do I need?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eCount each inward 135 degree angled return on the parapet or roof edge layout. A simple straight run may not need any, while an angled terrace or irregular extension may need several. Always check the roof plan before ordering, because internal and external corners are not interchangeable.\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; line-height: 125%; color: #2c3e50;\"\u003eDoes the sloped profile help with water drainage?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eYes. The sloped profile helps rainwater run away from the wall head rather than sitting on the surface. Good drainage is important in UK weather because repeated wetting, frost cycles and trapped moisture can stain masonry and shorten the service life of surrounding details.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eComparison Section\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eAluminium 135 degree internal corner\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eAn aluminium pre-formed corner is the strongest option when the priority is a neat, durable and colour matched finish. It suits modern flat roofs, parapet walls, roof terraces, commercial units and domestic extensions where the coping needs to look clean and perform well in exposed weather.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eSite cut straight coping lengths\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eCutting straight lengths on site can work for temporary or low visibility details, but it is easier to end up with uneven joints, rough exposed cuts and sealant-heavy corners. On a visible parapet return, a purpose-made corner is usually the better long-term option.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eLead or mortar capping\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eLead and mortar capping still appear on older UK buildings and conservation-led repairs. They can be suitable where the building style, listing status or planning requirement calls for a traditional detail. For most modern projects, powder coated aluminium gives a sharper finish, lower handling weight and better colour control.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFor a complete roof edge package, use this component with the 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 range and the relevant \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 needed for the build-up.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003ePart of a Complete System\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThis product should be positioned as a system component rather than a one-off accessory. A complete order helps the colour, profile and site fit stay consistent.\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]--\u003eMatching straight sloping coping lengths for the main parapet runs.\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]--\u003eThe 135 degree external coping corner for outward angled returns.\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]--\u003eThe 90 degree internal coping corner for standard inside turns.\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]--\u003eColour coded sealant for neat joint sealing where specified.\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]--\u003eColour coded timber fasteners for timber substrates.\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]--\u003eColour coded metal fasteners for metal substrates.\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]--\u003eAluminium roof flashing where the roof covering or upstand detail needs extra weathering support.\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]--\u003eTrims, flashings and angles for adjacent finishing work around the roof edge.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eWhen a contractor orders the full system from one supplier, the finish and profile are easier to coordinate. That reduces the chance of mismatched colours, awkward corner changes and last-minute site fixes.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-family: 'Arial',sans-serif; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: major-bidi;\"\u003eStandards and Compliance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eFor flat roof and parapet work, detailing should be planned with the roof design, waterproofing layer and site conditions in mind. \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 is the current British Standard code of practice for flat roofs with continuously supported flexible waterproof coverings. It is relevant because coping details sit at the roof edge, where poor design can affect the wider roof build-up.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFor architectural aluminium coatings, \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 gives the relevant reference point for powder coatings prepared from thermosetting coating powder on aluminium and aluminium alloys. It supports a more credible explanation of the powder coated finish than vague claims about long life.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOn new-build housing or warranty-backed projects, the project team should also consider \u003ca href=\"https:\/\/www.nhbc.co.uk\/standards\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #2e75b6;\"\u003eNHBC Standards\u003c\/span\u003e\u003c\/a\u003e where relevant. Getting this right protects the warranty, the building and the people inside it.\u003c\/p\u003e","brand":"Online Metal Store Ltd","offers":[{"title":"185mm","offer_id":42314529243220,"sku":"AC2-I135-100-185","price":57.6,"currency_code":"GBP","in_stock":true},{"title":"210mm","offer_id":42314529275988,"sku":"AC2-I135-100-210","price":60.12,"currency_code":"GBP","in_stock":true},{"title":"235mm","offer_id":42314529308756,"sku":"AC2-I135-100-235","price":62.64,"currency_code":"GBP","in_stock":true},{"title":"260mm","offer_id":42314529341524,"sku":"AC2-I135-100-260","price":65.16,"currency_code":"GBP","in_stock":true},{"title":"285mm","offer_id":42314529374292,"sku":"AC2-I135-100-285","price":67.68,"currency_code":"GBP","in_stock":true},{"title":"310mm","offer_id":42314529407060,"sku":"AC2-I135-100-310","price":70.2,"currency_code":"GBP","in_stock":true},{"title":"335mm","offer_id":42314529439828,"sku":"AC2-I135-100-335","price":72.72,"currency_code":"GBP","in_stock":true},{"title":"360mm","offer_id":42314529472596,"sku":"AC2-I135-100-360","price":75.24,"currency_code":"GBP","in_stock":true},{"title":"385mm","offer_id":42314529505364,"sku":"AC2-I135-100-385","price":77.76,"currency_code":"GBP","in_stock":true},{"title":"410mm","offer_id":42314529538132,"sku":"AC2-I135-100-410","price":80.28,"currency_code":"GBP","in_stock":true},{"title":"435mm","offer_id":42314529570900,"sku":"AC2-I135-100-435","price":82.8,"currency_code":"GBP","in_stock":true},{"title":"460mm","offer_id":42314529603668,"sku":"AC2-I135-100-460","price":85.32,"currency_code":"GBP","in_stock":true},{"title":"485mm","offer_id":42314529636436,"sku":"AC2-I135-100-485","price":87.84,"currency_code":"GBP","in_stock":true},{"title":"510mm","offer_id":42314529669204,"sku":"AC2-I135-100-510","price":90.36,"currency_code":"GBP","in_stock":true},{"title":"535mm","offer_id":42314529701972,"sku":"AC2-I135-100-535","price":92.88,"currency_code":"GBP","in_stock":true},{"title":"560mm","offer_id":42314529734740,"sku":"AC2-I135-100-560","price":95.4,"currency_code":"GBP","in_stock":true},{"title":"585mm","offer_id":42314529767508,"sku":"AC2-I135-100-585","price":97.92,"currency_code":"GBP","in_stock":true},{"title":"610mm","offer_id":42314529800276,"sku":"AC2-I135-100-610","price":100.44,"currency_code":"GBP","in_stock":true},{"title":"635mm","offer_id":42314529833044,"sku":"AC2-I135-100-635","price":102.96,"currency_code":"GBP","in_stock":true},{"title":"660mm","offer_id":42314529865812,"sku":"AC2-I135-100-660","price":105.48,"currency_code":"GBP","in_stock":true},{"title":"685mm","offer_id":42314529898580,"sku":"AC2-I135-100-685","price":108.0,"currency_code":"GBP","in_stock":true},{"title":"710mm","offer_id":42314529931348,"sku":"AC2-I135-100-710","price":110.52,"currency_code":"GBP","in_stock":true},{"title":"735mm","offer_id":42314529964116,"sku":"AC2-I135-100-735","price":113.04,"currency_code":"GBP","in_stock":true},{"title":"760mm","offer_id":42314529996884,"sku":"AC2-I135-100-760","price":115.56,"currency_code":"GBP","in_stock":true},{"title":"785mm","offer_id":42314530029652,"sku":"AC2-I135-100-785","price":118.08,"currency_code":"GBP","in_stock":true},{"title":"810mm","offer_id":42314530062420,"sku":"AC2-I135-100-810","price":120.6,"currency_code":"GBP","in_stock":true},{"title":"835mm","offer_id":42314530095188,"sku":"AC2-I135-100-835","price":123.12,"currency_code":"GBP","in_stock":true},{"title":"860mm","offer_id":42314530127956,"sku":"AC2-I135-100-860","price":125.64,"currency_code":"GBP","in_stock":true},{"title":"885mm","offer_id":42314530160724,"sku":"AC2-I135-100-885","price":128.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1588\/2580\/files\/Sloped_20Coping_20-_20135-Degree_20Internal_20Corner.png?v=1774517090","url":"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-coping-corner-135-1","provider":"Online Metal Store Ltd","version":"1.0","type":"link"}