FIRMSEAL, installers of uPVC & Aluminium Windows, Doors & Conservatories across Yeovil & Somerset since 1988.

FIRMSEAL ONLINE DOOR BUILDER: Design your new front door here and get a free no obligation quote.

Providing top quality windows, doors and more to the Yeovil & Somerset areas for 30 years

..did we mention we never ask for a deposit?

FIRMSEAL, installers of uPVC & Aluminium Windows, Doors & Conservatories across Yeovil & Somerset since 1988.
FIRMSEAL, installers of uPVC & Aluminium Windows, Doors & Conservatories across Yeovil & Somerset since 1988.

Yeovil's leading home improvement company

Firmseal is the South West’s leading home improvements company. Established in 1988 and with a customer base of thousands of loyal customers from Yeovil and the surrounding areas in the South West we have made our reputation by doing things our own way.

We provide an unrivalled range of high security, energy efficient double glazing products, including A-rated windows, beautiful doors, bespoke conservatories and maintenance-free uPVC fascias, soffits and guttering throughout Yeovil, Somerset and Dorset.

Our commitment to quality of service and product combined with a price-match promise, an industry-backed 10 guarantee and the fact that we never take a deposit allows us to offer the very best Firmseal experience to all of our customers.

FIRMSEAL, installers of uPVC & Aluminium Windows, Doors & Conservatories across Yeovil & Somerset since 1988.

Our mission: to exceed your expectations

Our dedication to honesty, quality and a service that is second-to-none has helped us become Yeovil’s number 1 provider of double glazing windows, doors and much more. Our over 20,000 customers trust us to do a great job and we in-turn trust our customers by never asking for a deposit

Excellent product & better value for money than competitor brands
Mr & Mrs T – Alitherm, Yeovil
everything went smoothly from start to finish.
Mrs M – Windows, Yeovil
Your fitter was friendly and brill at his job.
Mrs G.D. – Patio Doors, Merriott

The Firmseal Experience

We are constantly striving to make your experience of dealing with us an extremely smooth and pleasant one, our team of dedicated and professional staff are here to ensure that we always have your very best interests at heart.

From the moment of your first contact through to final sign-off we are always on hand throughout the entire process of your installation, our aim is ensure that every step of the way is undertaken with as little fuss or disruption as possible.

Kindly take a few minutes to read through some of the many fantastic testimonials our customers have left for us – you’ll soon discover how important is to us that we provide the very best experience for you.

Mrs G.D. – Patio Doors
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Customer Testimonials
Read our Testimonials page to find out what our customers say about us.