3mm Aluminium Sloping Coping – 90° Internal Corner | 125mm External Leg

Achieve a precise and watertight finish at internal wall junctions with our 3 mm aluminium sloping coping 90° internal corner. Featuring a 125 mm external leg, this corner piece delivers strong wall coverage, continuous slope drainage, and a seamless connection between coping runs. Perfect for both contemporary and commercial projects.

Key Features

• 3 mm architectural-grade aluminium for strength and long-term durability

• 90° internal corner designed for accurate coping alignment at inward angles

• 125 mm external leg provides enhanced wall coverage and stability

• Built-in slope ensures efficient rainwater run-off across parapet junctions

• Powder-coated finish available in all RAL colours for a consistent aesthetic

• Lightweight yet robust, allowing quick and simple installation

• Proudly manufactured in the UK with short lead times and fast delivery

Why Choose This Aluminium Coping Corner

This 90° internal corner is designed to deliver a clean, professional connection where two coping runs meet at an inward angle. The longer 125 mm leg provides added wall protection, especially on wider or exposed parapets. Its integrated slope maintains effective drainage and prevents water build-up. Ideal for modern architectural projects, this component combines durability, functionality, and refined British craftsmanship.

What is a 90° internal coping corner used for?
It connects two aluminium coping runs at an inward angle, creating a watertight, visually seamless joint along the parapet wall.

Why choose the 125 mm external leg?
The extended leg provides wider wall coverage and improved protection against rainwater and weather exposure.

Is this component compatible with sloped coping systems?
Yes, it’s designed to match the coping slope, ensuring continuous water flow and uniform drainage through the corner.

Can this corner be colour-matched to other coping sections?
Absolutely. It’s powder-coated in any RAL colour to ensure a consistent appearance across your coping system.

How is it installed?
The corner fits neatly between coping runs using concealed fixings and sealant for a durable, watertight joint.

UK-made 3 mm aluminium sloping coping 90° internal corner with 125 mm external leg. Powder-coated in any RAL colour for superior parapet protection and style.