Crittall Composite Windows is a specialist division of Crittall Windows which specialises in the supply of Composite windows for both residential and commercial construction & renovation. Composite windows are aluminium clad timber windows which provide both sustainability and durability to window specification. Crittall can provide full technical assistance and CAD drawings to facilitate the specification of these high performance composite windows.

Rationel UK manufacture high performance timber windows and doors. There is also a composite range of aluminium clad timber windows and doors which provide contemporary and low maintenance attributes. Windows and Doors are "secured by design" and can be specified into all residential, commercial and public projects.

REA are specialists in the design, manufacture, installation and glazing of architectural steel glazing systems including fire rated glazed steel windows, glazed steel doors and steel framed fire rated one and two hour fire screens. REA steel windows are BSI Kitemark for quality assured manufacture and performance testing of steel windows to BS 6510:1984.

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