3mm Aluminium Sloping Coping – 135° External Corner | 125mm External Leg

Create a clean, professional angled transition on your coping system with our 3 mm aluminium 135 degree external corner, designed with a 125 mm external leg for strong and consistent wall coverage. This corner piece joins two sloping coping sections at a wider external angle, keeping your parapet line continuous and visually balanced.

The sloping design encourages controlled water run off, preventing moisture from collecting on flat surfaces and improving long term wall protection.

Strong, rigid, and weather resistant, this component is ideal for high performance residential, commercial, and industrial projects.

Key Features

• 3 mm architectural grade aluminium for superior strength and rigidity
  
• 135 degree external corner for angled parapet transitions
  
• 125 mm external leg for secure coverage on medium and large parapet walls
  
• Sloping profile channels water effectively away from the wall
  
• Powder coated finish available in any RAL colour
  
• Compatible with concealed fixing systems for a clean, screw free finish
  
• Manufactured in the UK with consistent quality and fast lead times

Why You’ll Love It

This wider angle external corner helps your coping system wrap around external parapet angles with precision. The 3 mm aluminium thickness provides exceptional durability and stability, while the 125 mm leg offers generous coverage that suits larger parapet designs. It ensures both functional water control and an architectural, seamless appearance.

What is this external corner used for?
It joins two sloping coping sections at a 135 degree external angle to create a clean and secure finish.

Why choose 3 mm aluminium?
It offers outstanding rigidity, stronger wind resistance, and maximum long term durability.

Is the 125 mm external leg suitable for larger walls?
Yes. It provides strong coverage for medium and large parapet wall profiles.

Can it be colour matched to my coping system?
Yes. It can be powder coated in any RAL colour for perfect visual continuity.

How is it installed?
It works with OMS’s concealed bracket and sealant system to create a watertight joint with no visible screws.

UK made 3 mm aluminium sloping coping external corner with 125 mm external leg. Powder coated in any RAL colour for a seamless, strong and watertight finish on angled parapet walls.