Supply and installation
French casement windows in Letchworth
Paired opening sashes with a central mullion that moves with the window. Open both sides for a clear aperture, with uPVC and aluminium options to compare.
Talk to us: 01908 429200Serving Letchworth (SG6) from our Milton Keynes showroom.
Choosing French casement windows
Two opening sashes, one clear opening.
The opening
The centre section travels with one sash when both sides open. We check the usable aperture and the space outside for the sashes to swing.
View the openingFrame material
French casement describes the arrangement. Compare the compatible uPVC and aluminium systems on the configuration page before choosing a finish.
View frame materialEveryday access
Handle positions and the order in which the sashes open affect daily use. Try the mechanism and explain how you want to ventilate the room.
View everyday accessLetchworth
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.
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 French casement windows in Letchworth.
Product choices, pricing and what happens before we fit.
Is French casement a material or a window layout?
It is a layout: two side-hung sashes open without a fixed centre mullion remaining in the aperture. We offer this arrangement in compatible uPVC and aluminium systems; the main configuration page shows the choices.
How do I get a price for French casement windows?
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 French casement windows in Hitchin, Stevenage and Luton.
Do I need permission to replace windows 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
3 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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