2mm Aluminium Sloped Coping – Right Handed Closed Stopend | 100mm External Leg

An open end on a coping run is one of those small details that can cause a much bigger problem later. Wind driven rain can find its way into exposed parapet edges, especially on flat roof projects around Chelmsford, Brentwood, Basildon and East London where rooflines often take a battering from damp weather and frost cycles.

This 2mm aluminium coping stopend 100mm is designed to close the right hand end of a sloping coping run neatly. It gives the wall edge a proper finished detail, rather than relying on a site cut, a bead of silicone or a bodged end that starts to stain the brickwork after the first bad winter.

Product Overview

The product is a 2mm aluminium sloping coping right handed closed stopend with a 100mm external leg. It is used at the end of a parapet wall coping run where you need a clean, closed finish and proper protection against water getting into the wall head. For most roofers, builders and homeowners, it is the final piece that turns a coping length into a properly finished system.

Manufactured for UK roofline work from Chelmsford, Essex, this stopend is made to suit selected coping widths from 185mm through to 885mm and can be powder coated in any RAL colour. Online Metal Store Ltd should position it as part of the wider Aluminium Copings range, especially where the same project also uses Aluminium Sloping Coping for parapet protection.

It is best sold as a system component, not as a decorative extra. When ordered with matching lengths, corners, fixings and Colour Coded Sealant 300ml, it helps create a more consistent finish across domestic extensions, commercial flat roofs, schools, care homes and housing developments across the South East.

Key Benefits

Closes the Exposed End of the Coping Run

The main job of this stopend is simple but important. It closes the right hand end of a sloping coping run so rain, debris and wind cannot get straight into the exposed wall edge. On parapet walls, that end detail matters because one weak point can lead to damp patches, staining and premature repair work.

Built for UK Weather

The 2mm aluminium construction gives a strong, lightweight and corrosion resistant finish for the UK climate. It is well suited to driving rain, frost cycles, damp air and exposed rooflines in places such as Southend, Colchester and coastal parts of Essex where cheaper materials can age quickly.

Powder Coated in Any RAL Colour

The stopend can be powder coated to match the coping run, fascia, soffits, windows or rainwater goods on the same building. A matched RAL colour gives the finished edge a more intentional look, especially on contemporary homes, commercial units and refurbishment projects where visible details matter.

Lightweight and Easier to Handle on Site

Because it is made from aluminium, the part is easier to handle than heavier metal alternatives. That helps installers working at roof level, especially when they are lining up widths, corners and stopends on a parapet where accuracy is important.

UK Manufactured with Fast Delivery

The product supports a UK made supply chain, with manufacturing based around Chelmsford, Essex. For roofers and builders, that means less waiting around for a small but essential part that can otherwise hold up completion of a roofline job.

Cleaner Finish Than a Site Cut End

A factory formed closed stopend gives a neater and more reliable result than cutting and trying to close the end on site. It keeps the roof edge looking sharp and reduces the risk of uneven sealant lines, exposed edges or an unfinished detail that lets the rest of the project down.

Technical Specifications

Product type: Right handed closed stopend for sloping aluminium coping

Material: 2mm aluminium

Profile: Sloping coping stopend with closed right hand end

External leg: 100mm

Handing: Right handed

Finish: Powder coated in any RAL colour selected at order stage

Price shown on current page: From £58.56 ex VAT, £70.27 inc VAT

Available sizes: 185mm, 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 and 885mm

Best used with: Matching aluminium coping lengths, corners, fixings and sealant from the same system

Return note: Custom fabricated item, measurements should be checked before ordering

Choosing the Right Size and Handing

The width should match the coping profile being installed, not just the brickwork width. Allow for the correct overhang, roof build up and drip position before ordering.

·         Use narrower sizes such as 185mm to 285mm for smaller walls, garden walls and simple domestic parapets where the build up is modest.

·         Use mid range sizes such as 310mm to 510mm for extensions, Victorian terraces, Edwardian semis and common flat roof details where the wall build up is wider.

·         Use wider sizes such as 535mm to 885mm for commercial units, housing developments, schools and larger parapet details where insulation, membranes and wall construction need more coverage.

·         Choose a right handed stopend when the closed end is required on the right side of the coping run as viewed from the agreed installation direction. If the run ends on the opposite side, the project may need a left handed part instead.

·         Keep the RAL colour consistent across lengths, corners, stopends, sealant and fasteners so the completed roofline looks like one planned system.

How to Install the Aluminium Coping Stopend

Start by checking the coping width, handing and RAL colour before lifting the part into position. Dry fit the stopend against the final coping length to confirm the line, slope and closure direction. This avoids the common mistake of ordering the correct width but the wrong handed end.

Prepare the wall head, membrane termination and fixing points so the coping system sits cleanly. Where waterproofing needs to be restrained or finished neatly, review the Aluminium Termination Bar 2500mm as part of the roof edge build up.

Fit the final coping length first, then set the stopend into the correct position with an even joint. Use the appropriate Colour Coded Fasteners for Timber or Colour Coded Fasteners for Metal depending on the substrate and project detail.

Seal the joint properly with Colour Coded Sealant 300ml, keeping the bead controlled and neat. Do not rely on sealant alone to form the end closure. The stopend should provide the formed metal close off, while the sealant supports the joint.

Where the stopend sits near other roofline details, such as lead replacement areas, edge flashings or abutments, check whether Aluminium Roof Flashing 3000mm or Aluminium Roof Soakers are needed to keep the full roof detail consistent.

Where Aluminium Coping Stopends Are Used

Domestic Flat Roof Extensions

On rear extensions in places such as Billericay, Brentwood and Chelmsford, a stopend gives the coping run a clean end where the parapet meets a return, side wall or change in roof detail. It is a small part, but it helps the finished extension look more complete.

Commercial Parapet Walls

Commercial buildings often have long roof edges where exposed end details are easy to notice from the ground. Pairing this stopend with matching Aluminium Copings helps create a cleaner and more durable perimeter.

Refurbishment and Lead Replacement Projects

Where old lead, cracked mortar or tired wall caps are being replaced, a formed aluminium stopend gives the new roofline a better finish. On older UK properties, installers should still check conservation rules, especially around listed buildings, but modern aluminium details are often a practical choice for non listed refurbishments.

Housing Developments and Repeat Plot Work

For developers, repeatable parts save time. Using the same stopend, coping widths and colour specification across multiple plots reduces variation and helps maintain a consistent finish across the full development.

Projects Needing a Matched Roofline System

This stopend works best when treated as part of a full roofline package. It can sit alongside Trims, Flashings and Angles, fascia, soffits and rainwater goods where the client wants a sharper, colour matched finish.

Frequently Asked Questions

Do I need a stopend on an aluminium coping run?

Yes, when the coping run finishes at an exposed end, a stopend is normally needed to close the profile properly. It helps stop rain and debris from entering the open end and gives the parapet edge a more professional finish.

How many closed end caps do I need for one wall?

Most straight coping runs need one stopend at each exposed end, but the exact quantity depends on the roof layout. A simple wall may need two, while a roof with returns, breaks or multiple parapet sections may need more.

What does right handed mean on this product?

Right handed means the closed end is formed for the right hand side of the run, based on the agreed fitting direction. Before ordering, check the roof drawing or stand at the installation side and confirm which end needs to be closed.

Can I leave the end of the coping open and seal it with silicone?

That is not a good detail for a long term roofline finish. Sealant supports the joint, but it should not replace a formed metal stopend. An open end can let water into the parapet edge and may look unfinished from the ground.

Is aluminium better than plastic for this detail?

For most exposed roofline projects, aluminium gives a stronger and more durable finish than plastic. Plastic can still have a role on low cost temporary work, but aluminium is better suited to permanent parapet protection where appearance, colour matching and weather resistance matter.

Can the stopend be made to match my coping colour?

Yes, the product can be powder coated in the selected RAL colour. Matching the stopend to the main coping length helps the roof edge look consistent and avoids a patchwork finish on visible elevations.

Comparison Section

Aluminium Stopend

An aluminium stopend is the strongest choice for a permanent, neat and colour matched coping termination. It works well on domestic, commercial and public sector projects because it gives a formed finish and resists corrosion in normal UK weather conditions.

Site Cut and Sealant Only

A site cut with sealant can look acceptable on the day, but it depends heavily on workmanship and often lacks the clean formed edge that buyers expect. It may still be used as a temporary repair, but it is not the best approach for a finished parapet coping system.

Lead or Traditional Metal Detailing

Lead still has a place on certain heritage and listed building projects where conservation officers require traditional detailing. For most modern roofline jobs, powder coated aluminium gives a cleaner finish, a lighter part and simpler colour coordination.

For wider project planning, guide buyers back to the full Aluminium Copings range so they can choose lengths, stopends and related details as one coordinated system.

Part of a Complete System

This right handed stopend should be framed as part of a complete parapet coping system from a single supplier. Ordering the main coping lengths, stopends, corners, fasteners and sealant together helps with colour consistency, profile matching and installation planning.

·         Aluminium Copings - Use as the main range navigation point for coping lengths and system planning.

·         Aluminium Sloping Coping - Use when the roofline needs controlled water run off from the wall head.

·         Aluminium Flat Copings - Use where the buyer is comparing flat and sloping options before ordering.

·         Colour Coded Sealant 300ml - Use for sealed joints and colour matched finishing.

·         Colour Coded Fasteners for Timber - Use where the substrate and fixing detail require timber fasteners.

·         Colour Coded Fasteners for Metal - Use where the stopend or related coping components are fixed into metal.

·         Roof Accessories - Use for wider project accessories and supporting roofline parts.

Standards and Compliance

For flat roof and parapet work, the surrounding roof build up should be considered against BS 6229:2025, which covers flat roofs with continuously supported flexible waterproof coverings. The stopend itself is only one part of the detail, but the whole roof edge needs to manage water correctly.

For powder coated aluminium used in architectural applications, BS EN 12206-1:2021 is the relevant standard to reference. Getting the coating and detailing right protects the finish, the building and the people inside it.

For new build projects, installers and specifiers should also check the relevant NHBC Standards and project warranty requirements, especially where parapet detailing, waterproofing and drainage are part of the roof specification.