Double Glazing Gloucester, Cheltenham, Tewkesbury

New Coloured Door Range

Our new colour range…


Manufacturers and installers of quality PVCu Windows, Doors, Standard and Solid Tiled roof Conservatories, Porches, Garage Doors, Roofline, Orangeries, triple and double glazing Gloucester, Cheltenham, Stroud, Tewkesbury, Cinderford, Cirencester and all surrounding areas.


Trust Firmfix!

Firmfix is a well established family run business based in Tewkesbury, we manufacture supply and install top quality double glazing in Gloucestershire and Worcestershire. So if you want a Conservatory in Cheltenham a porch in Pershore, windows in Worcester or double glazing in Gloucester we are the company to call . If your property needs new PVCu windows, doors, a conservatory standard orangery, skypod orangery, Facia, guttering or a new Garage door we have it all and more. These will all make lovely additons to any home. We are an ISO 9001 registered company and hold five Brittish Standard Kitemarks. Firmfix is a founding member of the Double Glazing and Conservatory Ombudsmen Scheme which gives you the best possible consumer protecton. We pride ourselves on being different to our competition.


Again, unlike most of our competition, all of our fitters are NVQ level 2 trained. They also are salary paid and not paid a percentage of the contract value or so much per frame. This ensures that your job is fitted correctly and not rushed by money motivated fitters. Our highly experienced fitters are paid a monthly wage and Perfection Bonus to encourage quality fitting every time.

Salary Paid Professional Sales Staff.

Our sales staff are not paid a commission; they are salary paid which means that no pressure or sales tricks will be used to make a sale. They will not use dirty tactics against our competition as we believe our high-quality PVCu products and services speak for themselves.


At Firmfix, we manufacture our own PVCu windows and doors to stringent British Standards. Our experienced fully employed fabricators are NVQ level 2 trained producing quality frames time and time again.


All Firmfix products are guaranteed for 10 years. Should any remedial work need to be carried out, we have our own dedicated service engineer to help. Simply Contact Us for more details of how your guarantee is set up.

Contact Firmfix today for more…

13 + 3 =