2mm Aluminium Sloped Coping – Right Handed Closed Stopend | 125mm External Leg

A coping run can look tidy across the main wall, then fail at the very end. If the exposed end is left open, rushed on site, or packed with sealant as a quick fix, driving rain can work into the profile and leave damp marks, staining or water sitting where it should never be.

That matters on real UK jobs, from flat roof extensions in Chelmsford and Brentwood to commercial parapet walls in Basildon, Colchester and East London. This right handed closed stopend gives the end of the sloped coping run a proper formed finish, so the wider 125mm external leg continues to protect the wall face and the roofline looks planned rather than patched.

Product Overview

This 2mm aluminium sloped coping right handed closed stopend is made to finish the right hand end of a sloping coping run with a 125mm external leg. It is used where the run stops at an exposed end rather than turning into another wall or corner. The formed end face closes the profile, keeps the detail neat and gives the installer a stronger finish than cutting and sealing a loose end on site.

Online Metal Store Ltd supplies this component from Chelmsford, Essex, as part of the aluminium sloping coping range. It suits roofers, builders, contractors, developers and homeowners who want a consistent coping system across parapets, roof terraces, boundary walls and modern extensions.

For a complete run, match this product with the correct coping widths, the opposite hand where needed, and the right sealing and fixing products. If the opposite end of the run is also open, pair this component with the left handed 125mm stopend and use colour coded sealant at the correct joints so the finish, colour and weathering detail stay consistent.

Key Benefits

Closes the Exposed End of a Coping Run

An open coping end is a weak point. This right handed closed stopend gives the terminal point a formed aluminium closure, helping reduce the risk of water entry, dirt build up and messy visible edges at the side of the wall.

125mm External Leg for Deeper Wall Coverage

The 125mm external leg gives a deeper face return than the 100mm version, which is useful on wider parapets, thicker wall finishes and exposed roof edges. It helps carry rainwater away from the wall face and gives the elevation a more substantial architectural line.

Powder Coated in Any Selected RAL Colour

The product can be powder coated to the selected RAL colour, so the stopend can match the main coping lengths, corners, fascia details and rainwater goods. This matters on visible projects where one mismatched end detail can spoil the whole roofline.

Suitable for UK Weather Exposure

Aluminium is a sensible choice for UK roofline components because it is lightweight and corrosion resistant. Paired with a suitable powder coated finish, it is well suited to driving rain, frost cycles, damp conditions and exposed parapet edges across the South East and wider UK.

Easier Handling on Site

A 2mm aluminium stopend is rigid enough for a clean finish but still manageable for roofers and installers. It can be handled without the same weight issues as heavier metals, which helps when working at height or finishing small sections of a roof edge.

UK Manufactured with Faster Support

Being produced through a UK supplier gives buyers better support on colour, sizing and system matching. For contractors working to live programmes in Essex, Kent, London and the Home Counties, this can help reduce delays caused by missing or mismatched terminal pieces.

Cleaner Than a Site-Made End Detail

A factory-formed stopend gives a sharper result than trying to fabricate the closure from offcuts. The end face, slope and return are already formed to suit the coping system, so the final detail looks cleaner and is easier to explain to clients, architects or main contractors.

Technical Specifications

Product: 2mm Aluminium Sloped Coping, Right Handed Closed Stopend | 125mm External Leg

Material: 2mm aluminium

Profile Type: Sloped coping stopend with closed end face

Handing: Right handed

External Leg: 125mm

Internal Leg: Not clearly stated on the live product page. Add the confirmed internal leg measurement to remove buyer uncertainty.

Finish: Powder coated aluminium, available in selected RAL colour

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, 885mm

Price From: £59.52 ex VAT, £71.42 inc VAT at the time of review

Suitable For: Sloped aluminium coping runs, parapet wall ends, flat roof wall heads, boundary walls and exposed roofline terminations

Manufacturing Location: Chelmsford, Essex, United Kingdom

Important Ordering Note: Confirm width, handing, external leg and RAL colour before ordering because this is a custom fabricated product.

Choosing the Right Size / Width / Thickness

·         Choose the stopend width to match the exact coping width used on the run. A 385mm coping width needs the matching 385mm stopend, not the nearest available size.

·         Use narrower sizes such as 185mm to 310mm for smaller wall heads, garden walls, single storey extensions and lighter parapet details.

·         Use mid range sizes such as 335mm to 535mm for many domestic flat roof extensions, Victorian terrace rear additions and standard commercial upstands.

·         Use wider options such as 560mm to 885mm for roof terraces, insulated parapets, commercial units, schools, care homes and larger housing developments.

·         Choose the 125mm external leg version when the outer wall face needs deeper cover than the 100mm option, especially where render, cladding or thicker wall build ups are involved.

·         Confirm left or right hand by standing in the agreed fitting direction and checking which end of the run needs the closed face. Handing mistakes are one of the easiest ordering errors on coping accessories.

How to Install / How to Fit

Start by checking the drawing, wall width, fall direction and handing before fitting. Place the right handed stopend at the terminal end of the run and dry fit it with the first adjacent coping length so you can confirm the width, external leg position and finished line before any sealant is applied.

Set out any corners and the opposite end closure before final fixing. If the wall turns inward, check the 90 degree internal corner with 125mm external leg or the 135 degree internal corner with 125mm external leg at the same stage so the whole coping run follows the correct roof edge geometry.

Use suitable colour coded fasteners for timber or colour coded fasteners for metal depending on the substrate and fixing detail. Keep fixings consistent with the main coping system so the finished roofline looks clean and does not leave exposed mismatched heads.

Apply colour coded sealant only where the joint detail requires it, not as a substitute for the formed metal closure. Wipe back excess sealant neatly, then recheck the slope so rainwater sheds away from the wall face rather than sitting on the terminal detail.

Where Aluminium Coping Stopend 125mm Is Used

Domestic Flat Roof Extensions

On extensions in Chelmsford, Brentwood, Billericay and Southend, a right handed stopend helps finish the end of a parapet wall neatly. It gives the builder a proper closure for the aluminium copings rather than leaving the homeowner with a rough cut end or a visible sealant-heavy repair.

Commercial Parapet Roof Edges

Commercial buildings in Basildon, Colchester, East London and Central London often have longer exposed parapet runs where small details are easier to spot. A colour matched stopend keeps the terminal point consistent with the main roofline and helps the finished elevation look more professional.

Roof Terraces and Wider Wall Heads

The 125mm external leg suits deeper wall faces where a 100mm return may look too shallow. On roof terraces, apartment blocks and insulated parapets, it can be used alongside the wider trims, flashings and angles needed to finish the surrounding roof edge details.

Boundary Walls and Garden Structures

A sloped coping stopend is useful on boundary walls where the wall finishes in open view. The closed end face gives the wall a more complete finish and avoids leaving a visible open profile at entrances, garden walls or side returns.

Colour Matched Architectural Projects

Where copings need to match doors, windows, fascia or rainwater goods, a RAL matched stopend keeps the final detail consistent. For project trust and specification support, link buyers to the aluminium coping case study so they can see how complete coping systems are used on real UK buildings.

Frequently Asked Questions

Do I need a right handed closed stopend?

You need a right handed closed stopend when the right end of a sloped coping run finishes at an exposed end and does not continue into another wall, corner or abutment. It closes the profile neatly and helps protect the wall head from rain, dirt and wind driven moisture.

How many stopends do I need for one straight run?

Most straight coping runs with two exposed ends need two handed stopends, one for each end. One end will usually be right handed and the other will usually be left handed, so check the direction of the run before ordering.

Why choose a 125mm external leg instead of 100mm?

A 125mm external leg gives deeper cover down the outside wall face. It is a better option where the parapet is wider, the external finish is deeper, or the design needs a stronger visual return on the outside elevation.

Can I just seal the open end without a stopend?

Sealant should not be the only closure for an exposed coping end. Sealant helps at joints, but a formed aluminium stopend gives a stronger physical end detail and a cleaner long term finish.

Will the stopend match my chosen colour?

Yes, the stopend can be powder coated in the selected RAL colour. Ordering the stopend, coping lengths and corners together helps keep the colour and finish consistent across the whole roofline.

Is this suitable for coastal or exposed UK sites?

Aluminium is suitable for many exposed UK roofline applications because it is lightweight and corrosion resistant. For coastal or harsh sites, choose the coating, fixings and maintenance approach carefully so the complete system can cope with salt laden air and driving rain.

Comparison Section

Formed Aluminium Stopend

A formed aluminium stopend is the cleanest option for most modern sloped coping systems. It is made to suit the profile, can be powder coated to the same colour and gives the run a proper closed end rather than relying on improvised site work.

Site-Cut End with Sealant

A site-cut end may appear cheaper at first, but it often leaves a weaker visual and weathering detail. Sealant has a useful role at joints, yet it should not be treated as the main end closure on an exposed coping run.

Plastic or Generic End Cap

Plastic or generic caps may still be used on lower value garden or temporary details, but they rarely match the profile, colour and durability of a powder coated aluminium coping system. For visible roof edges, aluminium gives a much better architectural finish.

For buyers planning a full parapet system, guide them back to the Aluminium Copings collection so they can order lengths, corners, stopends, sealant and fixings as one matched package.

Part of a Complete System

This right handed 125mm stopend should be positioned as one part of a complete sloped coping system, not as an isolated accessory. Ordering all parts together reduces colour mismatch, missed components and site delays.

·         Aluminium Sloping Coping - use as the main range page for the matching sloped coping system.

·         Left Handed 125mm Stopend - use for the opposite end of the same 125mm external leg system.

·         90 Degree Internal Corner with 125mm External Leg - use where the parapet run turns through an inward right angle.

·         135 Degree Internal Corner with 125mm External Leg - use for wider inward angled corners.

·         Colour Coded Sealant 300ml - use where sealed joints are required for a neat colour matched finish.

·         Colour Coded Fasteners for Timber - use where the fixing detail is into suitable timber.

·         Colour Coded Fasteners for Metal - use where the fixing detail is into a metal substrate.

·         Roof Accessories - use for wider system components and roof edge support items.

Standards and Compliance

Parapet coping details should be specified and installed as part of the wider flat roof and wall protection system. For flat roof design context, reference BS 6229:2025, which covers flat roofs with continuously supported flexible waterproof coverings.

For powder coating on architectural aluminium, reference BS EN 12206-1:2021, which relates to coatings prepared from thermosetting coating powder for aluminium and aluminium alloys used in architectural applications.

On new build projects, the coping detail should also be checked against the project specification, waterproofing supplier guidance and NHBC warranty expectations where relevant. Getting this right protects the warranty, the building and the people inside it.