Established in 1989, Keystone Group is Europe's leading manufacturer of steel lintels and Britain's fastest growing
manufacturer of roof windows.

Keystone Lintels Ltd, IG Ltd & Acier Lintels Ltd offer an extensive range of galvanised and stainless steel lintels. Keystone, IG & Acier are the leading producers of "Special" custom-made lintels to suit your design requirements and exact specifications. Keylite Roof Windows Ltd offer a large range of roof windows and accessories. For more information on Steel Lintels, Keystone, structural supports, Sun Rooms, Sun Lounges, Conservatories, Keylite Roof Windows, Roof Lights, Skylights and beautiful homes; click on the links below: