2mm Aluminium Coping – 135° Internal Corner | 125mm External Leg

Seal your 135° internal corners with a sleek, durable aluminium coping that locks in place with ease.

This 135° internal corner unit is part of our aluminium sloping coping system, crafted for a precise fit and professional finish. Made from 3mm 1050A-grade aluminium and coated with weatherproof polyester powder, it protects parapet walls from water ingress while enhancing the visual line of your build. Ideal for residential and commercial projects, this unit delivers strength and style in equal measure.

Choose a variant:

Size (Capping Width)

Starting at £78.72

excluding shipping cost

Features + Benefits

Designed to fit 135° internal corners in coping systems
2mm thick aluminium for long-term structural durability
Powder-coated surface resists rust, UV, and harsh weather
Fire safety rated A2-s1,d0 for building compliance
125mm external leg for extended coverage and cleaner finish
Hidden fixing system with 1.5nr brackets per unit
RAL/BS colour options to suit your design
Simple click-on installation, no exposed screws
Ideal for both new builds and refurbishments

Specs & Options

Material: 1050A Grade Aluminium
Thickness: 2mm
Internal Leg: 75mm
External Leg: 125mm
Angle: 135° internal corner
Finish: External-grade polyester powder coating
Colours: Full RAL/BS range available
Fire Rating: A2-s1,d0
Fixings: Supplied with 1.5nr hidden brackets
Lead Time: 5 to 10 working days
Custom Options: Available on request

Installation / Usage Instructions

To install, fix the hidden brackets to the wall top, then align and click the coping into place. No visible screws, no specialist tools required. Fast and reliable every time.

Looking for a coping solution that fits internal angles without compromise?

This 2mm aluminium coping for 135° internal corners is trusted by UK builders for its durability and smooth finish.