double glazing specialists in Crawley
Finding reliable double glazing installers in Crawley just got easier. Pro-Fit Window Systems works with a vetted network of FENSA-registered specialists across West Sussex who compete for your business — at no cost to you.
Whether you're replacing a single window or upgrading your entire home, we match you with up to 3 trusted local specialists — so you can compare prices and choose the best deal. The average homeowner in South East England saves £428–£1,284 by comparing quotes rather than accepting the first offer.
Double Glazing prices in Crawley 2026
We've compiled current installed price ranges for double glazing in the West Sussex area. Actual costs depend on window size and specification — compare quotes for a precise figure.
| Window Type | From (installed) | Up to (installed) |
|---|---|---|
| Casement (single) | £375 | £749 |
| Casement (large) | £535 | £963 |
| Sash Window | £642 | £1,177 |
| Bay Window (3-panel) | £1,284 | £3,424 |
| Tilt & Turn | £428 | £803 |
* Prices are estimates for Crawley based on current market data. Your exact quote will depend on window size, specification and chosen installer.
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Get Quotes in Crawley →FAQs — Double Glazing in Crawley
What is the price of double glazing in Crawley?
In Crawley, you can expect to pay from £375 for a standard casement window installed, up to £3,424 for a full bay window. Prices in West Sussex are slightly above the national average. The best way to get an accurate price is to compare quotes from local FENSA-registered installers using our free tool.
How long does window installation take in Crawley?
For most Crawley properties, window installation takes between one and three days. Replacing a single window can be completed in half a day. Your West Sussex installer will carry out a free survey before the job and give you a precise timeline.
Are your Crawley window installers FENSA registered?
Absolutely. FENSA registration is a mandatory requirement for all companies in our Crawley network. It certifies that installers meet UK Building Regulations standards and automatically includes a 10-year insurance-backed guarantee on every job.
Is planning permission required for window replacement in Crawley?
In most cases, replacing windows like-for-like in Crawley does not require planning permission — it falls under permitted development. However, if you live in a conservation area or listed building in West Sussex, you may need consent. Your installer will advise you during the free survey.