Keystone has redefined lintel performance with Hi-Therm, the low cost solution to reduced Carbon Emissions and improved Fabric Energy Efficiency.

Steel Lintels

Keystone produces a wide range of standard galvanised steel lintels. All Keystone standard lintels satisfy the Thermal Performance requirements of all UK building regulations.

Stainless Steel Lintels

Keystone’s full range of lintels are also available in stainless steel, providing the same high quality and performance features as our standard galvanised lintels.

Special Steel Lintels

Keystone offers a complete custom design service to ensure your project has the best lintel for the job. Our technical expertise is renowned for value engineering the optimum solution.

Sun Lounge Lintels

It is universally recognised amongst home owners and house builders that a Sun Lounge is a more practical, user friendly room than a conservatory.

Masonry Support

IG Masonry Support has combined experience with innovation to provide the most practical and advanced range of Masonry Support products on the market.

Brick Feature Lintels

Keystone Brick Slip Feature Lintels are a one piece, prefabricated unit with factory applied brick slips. Units are manufactured bespoke to order and can achieve even the most challenging architectural designs.


Keystone Windposts span vertically between floors to provide additional lateral support for large panels of brickwork or large panels with openings. Keystone manufactures three types of windposts.

Cavity Trays

The Keystone Cavity Tray presents a lightweight, simple to install and long-lasting solution to preventing dampness from penetrating below the roof line.