Keystone Lintels
ConstructionNorthern Ireland, United Kingdom51-200 Employees
Keystone Lintels is a steel lintel manufacturer based in Cookstown, Northern Ireland, and was founded in 1989. The company offers a broad range of lintel products, including standard and bespoke designs, along with masonry support and windpost systems to support construction projects. It provides extensive technical support and a design service that includes on-site measurements and thermal modelling to help ensure compliance with building regulations and to maximize project flexibility. It serves customers through a national network of merchant suppliers and maintains large inventories at two manufacturing and distribution centers to support fast, reliable delivery. In 2026, Keystone Lintels published BRE verified Environmental Product Declarations, strengthening its sustainability credentials.