3mm Aluminium Coping – 90° Internal Corner | 100mm External Leg

Join internal coping angles securely with a durable, weather-resistant corner unit.

This 90° internal corner unit is designed to connect two coping sections smoothly at internal wall angles. Made from heavy-duty 3mm 1050A-grade aluminium, it ensures a long-lasting, weathertight fit while maintaining a professional finish. The 100mm external leg provides balanced wall coverage, and the polyester powder-coated surface offers superior protection against corrosion, UV rays, and daily wear. Ideal for residential, commercial, or industrial coping applications.

Please refer to the attached RAL colour chart to view available options. At checkout, enter your chosen RAL colour in the designated box.

Choose a variant:

Capping Width

Starting at £120.00

excluding shipping cost

Download Colour Chart

Features + Benefits

Designed for 90° external corners in sloping coping systems
Made from strong 3mm 1050A-grade aluminium
Finished with a long-lasting polyester powder coat
Fire-rated A2-s1,d0 for full safety compliance
Sleek look with no visible fixings
Supplied with 1.5nr fixing brackets per unit
Click-fit system allows fast and secure installation
RAL and BS colour options available
Suitable for residential, commercial, and industrial projects

Specs & Options

Material: 1050A Grade Aluminium
Thickness: 3mm
Internal Leg: 75mm
External Leg: 100mm
Finish: Polyester powder-coated (external grade)
Colours: RAL and BS options available
Fire Rating: A2-s1,d0
Fixings: 1.5nr hidden brackets per unit
Lead Time: 5 to 10 working days
Custom Sizes: Available on request

Installation / Usage Instructions

Each unit comes with hidden brackets. Simply attach the bracket to the top of the wall and click the coping into place. No visible screws. No specialist tools required. Clean finish in just a few minutes.