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

Firmfix our extensive range of double glazed doors

British Standards : Peace of Mind

At Firmfix all of our double glazed doors go through several rigorous tests at our local Tewkesbury depot, and are made and fitted to British Standards. Firmfix is regularly inspected by the BSI for the fitting and manufacture of our Double Glazed windows and doors. Our products are also stringently tested every year at the BSI testing site to ensure conformity. So by choosing Firmfix you can be sure of a High quality product that is fitted correctly by trained fitters every time.

Residential Doors fitted by Firmfix

Majorly tested at the BSi testing site, our residential PVCu doors have successfully passed weather, endurance and security testing. Quality doors, built to last… Find out more>

Double Glazed Composit Doors

The ideal way to make an entrance! Firmfix composite doors can transform your home adding that finishing touch… Find out more>

Beautiful French Doors manufactured and installed Worcestershire

Firmfix French doors give you the opportunity to open up a living space giving you maximum opening with our slim-line systems… Find out more>

Firmfix High quality Stable Doors Cheltenham

A unique and stylish way to let in that cool summer breeze whilst keeping your pet inside or outside… Find out more>

Double glazed Bi-Fold doors by Firmfix

Bring the outside in with Firmfix bi-fold doors. Our new folding, sliding doors are the perfect way to enhance any living space… Find out more>

Sliding Patio Doors Local Gloucestershire company Firmfix

Designed to the highest standards, and made from minimal maintenance PVCu, our inline patio doors will operate smoothly and reliably for years to come…. Find out more>

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