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Firmfix quality BSi kitemarks for manufacture and installation of windows, doors & conservatories

The Firmfix range of double glazed windows is extensive and includes the following:

British Standards : Peace of Mind

All of our Efficiency Range double glazed windows are made and fitted to the British Standards. Firmfix is regularly inspected by the BSI for the fitting and manufacture of our windows and doors. Our products are also stringently tested every year at the BSI testing site to ensure conformity. So by choosing your double glazed windows by local Tewkesbury company Firmfix you can be sure of quality double glazing that is fitted correctly every time.

We offer a range of windows to suit every budget, find out more about our Duraflex and Trade counter ranges from the Range Explanation

Firmfix double glazed casement window Evesham

Designed and built to individually compliment your home… Find out more>

Firmfix double glazed sliding sash window Worcester

An ideal replacement for those who want to keep the traditional look… Find out more>

Firmfix double glazed sliding bay window Gloucester

Individually designed and manufactured to suit your home… Find out more>

Firmfix double glazed Bow window Hereford

Transform your flat windows with beautiful Bow windows… Find out more>

Firmfix double glazed tilt n turn windows Cheltenham

Designed to open inwards from the top and allow air circulation in your home… Find out more>

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