2mm Aluminium Sloped Coping – Left Handed Stopend Upstand | 100mm External Leg

A coping run can look almost finished, then fail at the very end if the termination detail is left open, cut roughly on site, or sealed with a quick bead of mastic that was never meant to do the whole job. On exposed parapet walls in Chelmsford, Brentwood, Colchester, Basildon and East London, that small open edge is exactly where driving rain, frost and wind pressure start to work their way into the wall head.

This left handed aluminium coping stopend gives the end of a sloped coping run a proper pre formed closure. It is a small component, but it does an important job. It helps finish the left hand end neatly, supports water control at the edge, and avoids the kind of untidy site-made detail that can let down an otherwise clean roofline.

Product Overview

The 2 mm aluminium sloped coping left handed stopend upstand is made for projects where a sloping coping run needs a clean, closed termination at the left hand side. It is designed with a 100 mm external leg and a raised upstand, giving roofers, builders and homeowners a more controlled finish than leaving the end open or trying to fold a closure on site.

Manufactured in Chelmsford, Essex, this product is part of the wider aluminium coping systems range from Online Metal Store Ltd. It works best when ordered with matching aluminium sloping coping, the right handed coping stopend for the opposite end, and the correct 90 degree coping corner or 135 degree coping corner where the roofline turns.

The finish can be powder coated in any RAL colour, so it can match the main coping lengths, metalwork and surrounding building details. For a neat installation, it should be fitted as part of a full system with suitable fixings, weatherproof jointing and colour coded sealant where joints or abutments need sealing.

Key Benefits

Closes the Left Hand End Properly

A left handed stopend is used where the coping run finishes on the left hand side when viewed from the correct installation direction. Instead of leaving an exposed end or relying on a rough site cut, this pre formed piece gives the parapet edge a tidy and purposeful closure. That improves both the look of the job and the way water is managed at the termination point.

Better Protection Against UK Weather

Flat roof edges and parapet walls are constantly exposed to wind driven rain, frost cycles and damp air. Aluminium is well suited to this type of UK roofline work because it does not rust like mild steel and it handles regular wet weather without the weight and staining issues linked with some traditional materials.

Powder Coated in Any RAL Colour

The stopend can be powder coated to suit the rest of the coping system, whether the project calls for Anthracite Grey, Black, Pebble Grey, White, a softer heritage colour or a bespoke RAL finish. This is especially useful on domestic extensions, housing developments and commercial units where the roof edge needs to match windows, doors, gutters or cladding.

Lightweight and Easy to Handle on Site

At 2 mm thick, the aluminium gives a good balance of strength and handling. Roofers can move and position the part without the weight associated with stone or concrete copings, which helps on smaller refurbishments, tight scaffold areas and roof access situations where heavy materials slow the job down.

Clean Architectural Finish

A formed stopend gives the coping system a more professional finish than a visible raw edge. On modern extensions, schools, care homes and commercial buildings, the end detail is often in plain view from the ground. A clean, colour matched closure helps the roofline look intentional rather than patched together.

UK Manufactured with Fast Delivery

The product is manufactured in Chelmsford, Essex, giving UK customers a practical route for made to order sizing and colour matching. That matters when a project is moving quickly and the last few accessories need to arrive in line with the main coping lengths.

Technical Specifications

Product: 2mm Aluminium Sloped Coping, Left Handed Stopend Upstand, 100mm External Leg

Material: 2 mm aluminium

Profile Type: Sloped coping stopend with raised upstand

Handing: Left handed

External Leg: 100 mm

Available Widths: 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, 885mm

Finish: Powder coated in any RAL colour selected by the customer

Use: Left hand termination detail for sloped aluminium coping runs on parapet walls and roof edges

Price Shown on Current Page: From £58.56 ex VAT, shown as £70.27 including VAT

Manufacturing Location: Chelmsford, Essex, United Kingdom

Return Status: Custom fabricated item, non-returnable unless faulty, subject to the published returns policy

Choosing the Right Size / Width / Handing

The most important choice is not only the coping width. You also need to confirm the correct end of the run. A left handed stopend is for the left hand termination of the coping line, while the right handed version is used at the opposite end.

·         Use the selected width to match the main sloped coping profile fitted to the wall head.

·         Choose a left handed stopend when the exposed end of the coping run finishes on the left side of the installation.

·         Order the matching opposite handed stopend if the run has two open ends.

·         For Victorian terraces and domestic extensions, check the finished wall build-up after render, insulation or brickwork adjustments.

·         For commercial units, schools and housing developments, confirm the parapet width from site measurements rather than drawings alone.

·         Where the roofline turns, combine stopends with the correct formed corner rather than forcing a straight length to suit the angle.

How to Install / How to Fit

Start by checking the wall head is clean, sound and ready to receive the coping system. The selected stopend should match the width and finish of the main sloped coping lengths. Dry fit the part before applying any sealant so you can confirm the handing, overhang, slope direction and junction with the next coping piece.

Position the stopend at the left hand end of the run and align it with the main coping profile. Use the correct concealed fixing method or suitable colour coded metal fasteners where visible or substrate-specific fixing is required. The fixing approach should follow the roof build-up, substrate and project detail rather than a one-size-fits-all method.

Seal joints and abutments carefully with colour coded sealant, especially where the stopend meets the next coping length or adjoining weathering detail. On timber substrates or mixed details, colour coded timber fasteners may be needed, while nearby roof edge work can be coordinated with trims, flashings and angles to keep the whole roofline consistent.

Do not leave open gaps at the end of the coping run. A neat-looking bead of sealant may hide the issue for a short time, but the end detail still needs a proper formed closure to help control water, movement and long-term weather exposure.

Where Left Handed Aluminium Coping Stopends Are Used

Domestic Extensions and Flat Roof Additions

On rear extensions, side returns and garage conversions, the parapet edge is often visible from gardens, patios and neighbouring properties. A colour matched left handed stopend gives the coping run a cleaner finish and helps avoid water marks at the exposed edge.

Commercial Units and Shopfront Rooflines

Commercial buildings in Essex, Kent and the Home Counties often need roof edge details that are practical, durable and tidy from street level. A pre formed stopend helps close the coping system neatly where the run terminates near signage, cladding or brickwork returns.

Housing Developments and Apartment Blocks

For repeat plots and multi-unit schemes, using matching accessories across the coping system keeps the detail consistent. Linking the product with aluminium flat copings where required, roof accessories and the aluminium coping case study can also help buyers understand how these parts fit into a complete roof edge specification.

Refurbishment Work on Existing Parapet Walls

Older parapet walls may have uneven edges, failed leadwork or tired concrete copings. A made to order aluminium stopend can help create a sharper finish when the existing wall has been measured correctly and the full coping system is planned before fabrication.

Roof Edge Details Beside Flashings

Where the coping run meets other roof edge weathering, it is worth planning the stopend alongside aluminium roof flashing so the termination, slope and sealed joints all work together. This avoids a neat coping detail being compromised by a poor adjoining trim.

Frequently Asked Questions

Which side stopend do I need for my coping run?

You need the stopend that matches the exposed end of the run when the coping is viewed in its fitted direction. If the run finishes on the left hand side, use a left handed stopend. If it finishes on the right hand side, use the right handed version.

How many end closures are required on a parapet wall?

A straight coping run with two exposed ends usually needs one left handed stopend and one right handed stopend. If the run turns into another wall, you may need a formed corner instead of a stopend at that junction.

Should a coping system have open ends?

No, open coping ends are not a good long-term detail. They can leave the wall head exposed to rain, wind and frost. A formed stopend gives the end of the coping run a cleaner and more controlled closure.

Can a left side upstand be colour matched?

Yes, the stopend can be powder coated in any selected RAL colour so it can match the main coping lengths, corners, fixings and nearby roofline details.

What sealant should be used around a coping end?

Use a suitable exterior grade sealant that works with powder coated aluminium and the roof edge detail. For a cleaner finish, a colour matched sealant is usually the best choice where the joint may be visible.

Is a pre formed end better than site folding?

For most visible roof edge projects, a pre formed stopend gives a neater, more reliable finish than trying to fold or patch an end detail on site. It also helps keep the profile, coating and system appearance consistent.

Comparison Section

Aluminium Stopend

A powder coated aluminium stopend is usually the best match when the rest of the coping system is aluminium. It is lightweight, corrosion resistant and can be made in a colour that matches the main roof edge detail. For modern parapet walls and flat roof edges, it gives a clean finish without adding unnecessary weight.

Lead or Site-Formed Metal End Detail

Lead and site-formed details still have a role on some listed buildings, conservation work and traditional roof repairs where matching the existing material is required. The downside is that site forming takes skill, can look inconsistent, and may not match a powder coated aluminium coping system visually.

Plastic or Basic End Cap

Plastic end caps can be suitable for lighter domestic trim systems, but they are not always the right visual or performance match for architectural aluminium copings. On exposed roof edges, a powder coated metal stopend normally gives a stronger, cleaner and more durable finish.

For projects where the full parapet edge is being replaced, the stopend should be specified alongside the relevant aluminium coping systems collection rather than treated as an isolated part.

Part of a Complete System

This left handed stopend performs best as part of a complete coping system from one supplier. That helps keep the colour, profile, slope and finish consistent across the whole roof edge.

·         Main sloped coping lengths: aluminium sloping coping

·         Opposite end termination: right handed coping stopend

·         Straight or angled roof edge turns: 90 degree coping corner

·         Wider angled roofline turns: 135 degree coping corner

·         Visible joint sealing: colour coded sealant

·         Fixing into metal substrates: colour coded metal fasteners

·         Fixing into timber substrates: colour coded timber fasteners

·         Related edge weathering: trims, flashings and angles

Ordering the system together reduces the risk of mismatched colours, incompatible profiles and awkward site-made junctions. It also gives the installer a clearer sequence when the coping lengths, corners, stopends, sealant and fixings all arrive as part of the same planned detail.

Standards and Compliance

For flat roof and parapet work, the wider roof design should be considered against BS 6229:2025, which covers flat roofs with continuously supported flexible waterproof coverings. The stopend is only one part of the roof edge, but it should still support good water control and careful detailing at the wall head.

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

For new-build work, NHBC expectations and project-specific building control requirements should also be checked, especially where parapet walls, flat roof waterproofing, insulation and external wall details meet.