Business Details
38 Years
experience
Your Trusted Source for Windows, Doors & Conservatories
Established in 1988, Firmfix Doors & Windows has been a trusted provider of premium windows, doors, and conservatories across the Three Counties. As a family-run business, we prioritise a no-pressure approach, with a dedicated sales team focused on understanding client needs. Our full-time employed fitters and in-house building team ensure every installation meets exacting standards. We are ISO 9001 accredited, with all installations carrying the BSI Kitemark for quality assurance. Customers benefit from a 10-year guarantee backed by QANW insurance, supported by our own in-house service engineer.Our product range balances functionality, aesthetics, and durability, including uPVC, aluminium, and composite materials. We handle all aspects from design to installation, including planning permissions and electrical work. Our showroom in Tewkesbury allows customers to explore our full range, while our financing options provide flexibility. With most work coming from recommendations, we maintain a reputation for reliability and customer care. Our served areas include Cheltenham, Gloucester, Worcester, and surrounding regions.
Services
Windows
Doors
Conservatories
Orangeries
Roofline
Details
- Year established: 1988
Highlights and features
- We have over 35 years of experience in window and door installations.
- Our ISO 9001 accreditation ensures consistent quality standards.
- Our sales team operates without commission, offering unbiased advice.
- We employ full-time fitters to maintain installation excellence.
- A 10-year insurance-backed guarantee covers all our installations.
Associations and certifications
- ISO 9001
- BSI Kitemark
- QANW
What people say
Fantastic job
Amazing service
Professional
Happy experience
Highly recommend
Services
uPVC Casement Windows
Our uPVC casement windows offer A-rated thermal efficiency and high security, available in multiple styles and colours. Designed for durability, they include optional PAS-24 high-security features. Manufactured in the UK using premium components, these windows combine functionality with aesthetic appeal for modern and traditional properties.
Composite Doors
High-security composite doors provide excellent thermal efficiency and durability. Available in various styles and colours, they enhance property security while maintaining visual appeal. Our sales team offers comparisons with other door types to help customers make informed decisions tailored to their needs.
Conservatory Installation
From design to completion, we handle all aspects of conservatory installation, including planning permissions and electrical work. Our NVQ-trained teams ensure quality construction, with options for flooring, blinds, and heating. Customers receive a 10-year guarantee on all installations, backed by QANW insurance.
Aluminium Windows
Origin Global aluminium windows provide slimline profiles with high security (PAS24, Secure by Design) and thermal efficiency. Available in OW-70 or OW-80 ranges, these low-maintenance windows offer long-term value. Colours can be matched to existing windows for cohesive aesthetics.
Warm Roof Upgrades
Upgrade existing conservatories with our warm roof system, reducing external noise by up to 30% and improving thermal performance. This solution extends the usability of conservatories year-round, with up to 20% off during seasonal promotions.
Questions
What areas do Firmfix serve for installations?
We cover Cheltenham, Evesham, Gloucester, Hereford, Malverns, Pershore, Stroud, Tewkesbury, and Worcester.
Do Firmfix windows and doors come with guarantees?
All installations include a 10-year insurance-backed guarantee through QANW.
Can I finance my window or door installation?
Yes, we offer 0% interest finance over 2 years, subject to credit approval.
Are Firmfix products energy efficient?
Our windows and doors are A-rated for thermal efficiency as standard.
Do you handle planning permissions for conservatories?
Yes, we manage all planning requirements and building regulations for your conservatory.
Can I visit a Firmfix showroom?
Yes, our Tewkesbury showroom displays our full range of windows, doors, and conservatories.
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Reviews (3)
Sue Pember
May 30, 2018
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Firmfix recently fitted a new front door for me whilst my Husband is in hospital, they were quick, friendly and very efficient. I would certainly recommend this company.
Julie Stephens
Jan 17, 2018
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After having a conservatory done by Firmfix 17 years ago and never had any trouble with it, my husband and I decided to have all our windows and door done which were fitted over the last few days and we are so pleased with them, the quality of the work is outstanding. Th e service was great from start to finish and the two guys who fitted them were brillant, helpful and very tidy. Top blokes!.I would recommend Firmfix.
Nicky Spanswick
Nov 25, 2017
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Fantastic service from start to finish, no pushy sales, no hidden extras or add on's, no complications! Great price and so happy with the quality and style! The lads were brilliant, cleaned up all the mess and didn't complain once even though they had a tough job in our old house and no vehicle access! Karen, the lads and all the staff are a credit to you. Thank you so much, would highly recommend!
