Supply and installation
Double glazing in Letchworth
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.
Talk to us: 01908 429200Serving Letchworth (SG6) from our Milton Keynes showroom.
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 windowsNew 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 doorsReplacement 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 glassLetchworth
Letchworth homes, and what to check first.
The homes. Letchworth was the world's first garden city, begun in 1903. Its Arts and Crafts houses, cottages and later garden city estates give it a character unlike anywhere else nearby.
What that means. Windows and doors are a large part of that character, so replacements need to respect the original proportions, glazing bar patterns and colours of these houses.
Check first. The Letchworth Garden City Heritage Foundation runs a Scheme of Management across much of the town, and its consent is needed for changes to windows and doors. Apply before you order.
Windows and doors
Compare the styles before choosing a finish.
Your project in Letchworth
See the samples. Talk through the job.
We cover Letchworth 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 consultation98 Alston Drive, Bradwell Abbey, Milton Keynes, Buckinghamshire MK13 9HF
Opening times and directionsYour questions
Buying double glazing in Letchworth.
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 Letchworth?
Yes. We cover Letchworth and its SG6 postcodes from our Milton Keynes base, and everyone who surveys and fits works for us. Nearby, we also fit double glazing in Hitchin, Stevenage and Luton.
Do I need permission to replace windows and doors in Letchworth?
In most of Letchworth, changing windows or doors needs consent from the Letchworth Garden City Heritage Foundation, as well as any planning permission from North Hertfordshire District Council. We can provide the product details the application asks for.
What our customers say.
Real reviews from real installations. Every one is public, so you can go and check them yourself.
Bernie Raffe
4 months ago
Great service from Fenster Glazing, very happy with our new bi-fold door, glass door and windows (with built-in blinds) There was an issue with the wrong spec of glass provided to them from their supplier, so they had to temporarily board up a door and a window, but this was put right within a few weeks. Recommended, thanks.
Read on Google Brigitta Lazar 14 Nov 2025A great and quick job. Very efficient.
Read on Google Norman Cummings 10 Jun 2025The best service ever, great workmen, very high standard and in the finish, excellent eye to detail.
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