Our Brands

The Keystone Group consists of Keystone Lintels, IG Lintels, Keylite Roof Windows, IG Masonry Support, Smartroof, IG Elements and Stockgap.

Keystone Lintels

Keystone Lintels Limited was founded in 1989, and now operates from Swadlincote (South Derbyshire) and Cookstown (N.Ireland). The company manufactures steel lintels and brickwork support systems for distribution throughout the UK and Ireland.
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IG Elements

IG Elements was founded in 2011 and operates from Woodville (South Derbyshire). The company provides quality solutions for the expanding housing sector including dormers, canopies, chimneys, bay roofs and door surrounds.
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IG Lintels

Established in 1958, IG Lintels was acquired by Keystone in 2006 and is based in Cwmbran (South Wales). The company has a strong brand reputation within the construction industry. IG Steel Lintels have been supplied and featured in many prestigious building contracts.
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Crendon Timber Engineering

Crendon Timber Engineering has over 50 years experience in creating the optimum value in timber structures, working in partnership with leading house builders, architects, specifiers and developers. Crendon’s expertise is in the design and fabrication of roof structures of all types, using in-depth trussed rafter design and manufacturing skills.
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Keyfix

Keyfix Limited was founded in September 2019 and operates from Swadlincote (South Derbyshire) and Cookstown (N.Ireland). Keyfix specialises in the development of non-combustible cavity systems for projects requiring Document B compliance in buildings over 18m high utilising steel frame systems in the external cavity.
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Smartroof

Smartroof joined the Keystone Group in 2012 and operates from Swadlincote (South Derbyshire). Smartroof provides a complete, eco-friendly, structural timber, insulated room-in-roof panel system, creating instant useable space.
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Keylite

Keylite Roof Windows Limited was founded in 2001 and operates from Burton Upon Trent (South Derbyshire) and Cookstown (N.Ireland). The company offers a full range of roof windows, flashings, electric operation kits, loft ladders, blinds and accessories.
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IG Masonry Support

Combining optimum performance with design flexibility, IG Masonry Support offers solutions which are easy to install and includes it’s revolutionary brick slip system which radically reduces onsite labour.
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Keyhouse

Keyhouse is a new concept in factory built homes developed by Keystone. This revolutionary flat pack house system provides the capability to erect a fully watertight, airtight, insulated home which is ready for first fix inonly 12 hours.
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