Contact Firmfix
Get in touch with our friendly team to discuss windows, doors, conservatories or other home improvement products. We’ll help you choose the right next step, whether that’s a showroom visit, home appointment or online quote.
- ^Speak to a friendly, no-pressure team
- ^Visit our Tewkesbury showroom
- ^Book a free home appointment
Send Us a Message
Tell us what you’re looking for and a member of our team will be in touch to help you take the next step.
Other Ways to Get in Touch
Call Us
01684 296603
Available during business hours
Visit Our Showroom
Visit Our Showroom
Firmfix Windows, Doors & Conservatories
Tewkesbury Business Park
Northway Lane
Tewkesbury
Gloucestershire
GL20 8PF
Free parking available on site.
A Trusted Local Company
Firmfix has been supplying and installing windows, doors and conservatories across the Three Counties since 1988. Our experienced team is committed to providing high-quality products, expert installation and a straightforward, no-pressure service from start to finish.
- ^Over 38 years of experience
- ^Trusted across Gloucestershire, Worcestershire and the surrounding areas
- ^Full-time employed installation teams
Prefer to Speak to Someone?
Call us on 01684 296603 to speak directly with our team.
No Pressure, Just Straightforward Advice
Our team are here to help you make the right decision for your home. We don’t use high-pressure sales tactics, just clear, honest recommendations based on your needs.
Quality You Can Trust
We are committed to high standards of workmanship, customer care and long-term reliability. Our accreditations and guarantees are in place to give you complete confidence when choosing Firmfix.

BSI Kitemark Certified
Our survey and installation processes meet recognised industry standards, demonstrating our commitment to quality, consistency and continual improvement.

Assure Certification
Our installations comply with current building regulations, and you will receive certification on completion, an important requirement if you sell your property.

ISO 9001 Accredited
We follow structured quality management processes to ensure consistent service, clear communication and high standards across every project.

Insurance-Backed Guarantee
As a member of QANW, your installation is protected by a 10-year insurance-backed guarantee, giving you added peace of mind.
10-Year Guarantee for Peace of Mind
All installations are backed by a 10-year guarantee, with support from our dedicated service team to quickly resolve any issues should they arise.
Backed by experienced installers and ongoing aftercare support.