Supply and installation

Double glazing in Stevenage

Replacement windows, new doors or just the glass. We help you work out what your home needs, price the choices and fit the finished job with our own team.

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Talk to us: 01908 429200

Serving Stevenage (SG1 and SG2) from our Milton Keynes showroom.

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Ask about double glazing in Stevenage.

Send your postcode, rough sizes and any photographs you have. We will review the job and come back to you.

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Our own installersFrom survey to fitting. Free consultationAdvice and colour samples at home. FENSA registeredCertification for qualifying installations. Ten year guaranteeInsurance-backed cover on new windows and doors.

White uPVC casement windows opened outwards on a brick house

What needs replacing?

Start with what you want to change.

New windows

Choose how each room opens and ventilates first. Casement, flush and sliding sash windows offer different frame lines and opening styles; uPVC and aluminium give you different finishes.

View new windows

New doors

A front entrance needs a different layout from a wide garden opening. Compare composite entrance doors, paired French doors, bifolds and sliding doors around the space you use.

View new doors

Replacement glass

If your frames are sound and the glass has misted between the panes, we can assess the sealed units on their own. Send a photograph of the whole window and a close-up of the glass.

View replacement glass

Stevenage

Stevenage homes, and what to check first.

The homes. Stevenage was the first post-war new town, designated in 1946. Most homes are in its planned neighbourhoods from the 1950s onwards, with the older High Street in the Old Town.

What that means. Many new town houses still have first-generation replacement windows now reaching the end of their life. They share a small number of designs, which makes a whole-house replacement easy to plan.

Check first. Flats and maisonettes are common in the neighbourhoods, and for those the freeholder usually has to agree before anything is ordered.

Windows and doors

Compare the styles before choosing a finish.

View all windows

uPVC Casement Windows

Two black flush casement windows standing open on a white painted brick elevation

uPVC Flush Sash Windows

A glazed composite front door beneath a canopy on a brick house

Composite Doors

Aluminium Bifold Doors

Your project in Stevenage

See the samples. Talk through the job.

We cover Stevenage from our base in Milton Keynes. A free consultation brings advice and colour swatches to your home. For full-size product samples, visit the showroom.

Book a free consultation

Our showroom

98 Alston Drive, Bradwell Abbey, Milton Keynes, Buckinghamshire MK13 9HF

Opening times and directions

Your questions

Buying double glazing in Stevenage.

Product choices, pricing and what happens before we fit.

Can you replace the glass and keep my existing frames?

We can replace sealed glass units in suitable existing frames. Send us photographs and approximate sizes so we can check the frame condition and identify the glass. For handles, hinges or locks, our repairs team can advise separately.

How do I get a price for double glazing?

Build your price online using approximate sizes, or book a free consultation and we price the job with you. Both use the same software and price list. Once you decide to go ahead, a technical survey confirms the measurements and fitting details before anything is made.

Do you supply and fit in Stevenage?

Yes. We cover Stevenage and its SG1 and SG2 postcodes from our Milton Keynes base, and everyone who surveys and fits works for us. Nearby, we also fit double glazing in Hitchin, Letchworth and Luton.

Do I need permission to replace windows and doors in Stevenage?

Stevenage is covered by Stevenage Borough Council. Like-for-like replacements are usually permitted development; the Old Town conservation area and listed buildings need more care, and flats need the freeholder's agreement.

Google and Trustpilot

What our customers say.

Real reviews from real installations. Every one is public, so you can go and check them yourself.

4.9 Rated by 141 customers Read our Google reviews

Independent customer feedback Read our Trustpilot reviews

Silvia Peraro 2 months ago

I had an excellent experience with Fenster Glazing from start to finish. Nick Perry and David managed the initial quote to installation process seamlessly, keeping communication clear, honest, and completely stress-free. When it came to the actual fitting, Zac and Shane did a fantastic job with the installation, working efficiently and leaving everything spotless. The professionalism from the entire team was top-notch, and the final result looks brilliant. I highly recommend them.

Read on Google Nicole 20 May 2025

Shane and James fitted two sash windows for us at the front of our house and we are so pleased.

Read on Google Brigitta Lazar 14 Nov 2025

A great and quick job. Very efficient.

Read on Google

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