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, please visit our website.