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.

PVC-u Windows, Doors & Curtain Walling: Rehau manufacture an extensive range of PVCu Window systems and PVCu Door systems for all domestic and commercial specifications. Rehau PVCu windows and doors combine high performance with high standards. PVCu windows & doors are fire rated and comply to all passive house legislation including the code for sustainable homes. Rehau PVCu Curtain walling systems and PVCu curtain wall units are suitable for all commercial facade specification.

Howarth Timber Group is renowned for its expertise across the industry. The group operates three divisions, Howarth Timber and Building Supplies. Howarth high performance windows, doors and conservatories. Howarth Timber Engineering for timber roof trusses.

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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.

Schueco are a leading manufacturer of glazing systems and renewable energy products. Systems include all types of windows & doors, conservatories, glazing units and curtain walling. Architectural products include facade systems, rainscreen systems, brise soleils and solar shading systems. Schueco also supply renewable energy products which include solar panels, heat pumps, solar thermal transfer and photovoltaic collectors.

Swish Windows and Doors are UK manufactures of PVCu windows and doors for new build and replacement projects. Swish windows are available as top hung and side hung casement windows and tilt and turn PVC u windows. Swish windows and uPVC doorsets are available as standard in a wood grain finish. Swish also supply an extensive range of coloured uPVC windows and external doors. Swish also manufacture insulated composite GRP external entrance doors in a wide range of finishes. Swish Windows and Doors are supported by a nationwide network of Swish installers. In addition to our range of windows and doors, Swish are leading suppliers of PVC u conservatories and recently, Swish have also included in our extensive range of PVCu profiles a range of multi-folding PVC u bi folding doors.

DML Systems design, manufacture and install Unitised Aluminium and Composite Curtain Walling, Commercial aluminium Windows and Doors, Commercial Facades and Structural Glazing. Unitised windows and curtain walling offer the advantages of being factory assembled for consistent quality and allow rapid installation which means they can be retrofitted with the least disruption to occupants. We supply and fit both finned or glass mullion frameless glass structural glazing and bolted structural glazing.