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

About Firmfix Windows & Doors, Tewkesbury

Firmfix are a local family run business committed to high standards right throughout our company. We fully understand the dilemma faced by consumers of, who to use, how to choose the right product, not pay too much for it and can I really trust the company to deliver what has been promised! This is why Firmfix have achieved so many accreditations. They are proof of quality products, procedures and peace of mind for you the customer.

About Firmfix Accreditations

Firmfix have our own accreditations as proof of quality products and procedures. Some of our competitors mislead potential customers by displaying a British Standard Kitemark. If in any doubt, go to and check out the licence number to see who the Kitemark belongs to. If they are claiming to have Kitemarks and do not, how much of their sales talk can you believe?

British Standard Institution Kitemarks

We are regularly inspected by the British Standard Institute to ensure our product and procedures are up to scratch. The product is tested every year at the BSi testing station to ensure conformity

About Firmfix Kite Marks

dgcos-logoFirmfix is a founding member of the Double Glazing and Conservatory Ombudsmen Scheme which gives you the best possible consumer protection.

  • Deposit Protection Insurance to guarantee any deposit you may pay
  • Work in progress insurance
  • A 10 year insurance backed guarantee to protect this guarantee
  • Access to FREE mediators, FREE independent inspectors and if necessary, The Ombudsman
  • Access to the DGCOS Compensation fund to honour any rewards made by the Ombudsman

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Firmfix have been independently assessed and have met the requirements of BS EN ISO 9001:2008.The European Standard for Quality Management Systems. We are independently inspected every year to ensure conformity.

24hr Emergency Call Out Service

To offer further confidence in our product, Firmfix provide a 24hr call out service to cover out of hours lock failure. Any window or door lock failure that creates a security breach will be rectified 24hrs a day 363 days a year. This cover is free for the first 3 years and renewable thereafter.


Sales staff are salary paid. They do not earn any commission whatsoever.

Fabricators are salary paid with the addition of a monthly perfection bonus. Any fabricating faults are deducted from the perfection bonus to encourage quality.

Fitters are salary paid with the addition of a monthly perfection bonus. Any fitting faults are deducted from the perfection bonus to encourage quality.

Builders are our own fully employed personnel and are also salary paid.

Subcontract workers include occasional builders / plasterers and NICEIC approved electrical engineers