3mm Aluminium Sloping Coping – 135° External Corner | 100mm External Leg

Achieve a seamless angled transition with our 3 mm aluminium sloping coping 135° external corner. Designed for precision and performance, this section provides a watertight, visually consistent finish where coping runs meet at wider external angles — maintaining both style and structural protection.

Key Features

• 3 mm high-grade aluminium engineered for durability and strength

• 135° external corner ensures a perfect fit for obtuse-angle wall junctions

• Integrated slope design allows efficient rainwater drainage away from parapet walls

• 100 mm external leg for full wall coverage and professional alignment

• Powder-coated finish available in all RAL colours

• Lightweight yet rigid – easy to handle and install

• Manufactured in the UK with quick delivery across the country

Why Choose This Aluminium Coping Corner

This 135° external corner forms part of our premium aluminium coping system — ideal for projects with angled wall layouts or roofline variations. It ensures consistent slope continuity and watertight protection around complex parapet details. Built from durable 3 mm aluminium and powder-coated to match your coping run, it’s designed to last for decades with minimal maintenance.

What is a 135° external coping corner used for?
It connects aluminium coping runs at wider external wall angles, creating a smooth, watertight transition with continuous slope drainage.

Is it suitable for sloped coping systems?
Yes, it’s designed to match the slope and profile of our aluminium coping system for perfect alignment and drainage.

Can I get this corner in custom colours or sizes?
Absolutely. We manufacture bespoke 135° corners in any width, slope, or RAL colour to suit your project.

How do you install a 135° external corner?
Simply align it with adjoining coping sections, fix it using concealed brackets, and seal the joints for a watertight finish.

Where is this product made?
All our aluminium coping systems, corners, and stopends are manufactured in the Chelmsford, Essex, UK for quality assurance and fast turnaround.

UK-made 3 mm sloped aluminium coping 135° external corner with 100 mm external leg. Available in any RAL colour with fast nationwide delivery.