double glazing specialists in Croydon
Finding reliable double glazing installers in Croydon just got easier. Pro-Fit Window Systems works with a vetted network of FENSA-registered specialists across Greater London who compete for your business — at no cost to you.
From a single window replacement to a full property upgrade, our network of Greater London specialists will compete for your job. Homeowners in London who compare quotes typically save £480–£1,440 against the first price they're offered.
Double Glazing prices in Croydon 2026
We've compiled current installed price ranges for double glazing in the Greater London area. Actual costs depend on window size and specification — compare quotes for a precise figure.
| Window Type | From (installed) | Up to (installed) |
|---|---|---|
| Casement (single) | £420 | £840 |
| Casement (large) | £600 | £1,080 |
| Sash Window | £720 | £1,320 |
| Bay Window (3-panel) | £1,440 | £3,840 |
| Tilt & Turn | £480 | £900 |
* Prices are estimates for Croydon based on current market data. Your exact quote will depend on window size, specification and chosen installer.
Get your free double glazing quote in Croydon
Takes 60 seconds. No obligation. FENSA-registered installers only.
Get Quotes in Croydon →FAQs — Double Glazing in Croydon
Double Glazing prices in Croydon — what should I budget?
Greater London double glazing prices typically range from £420 for a single casement window to £3,840 for a bay window, fully installed. Croydon pricing is slightly above the UK average — compare local quotes to find the best deal for your property.
What's the typical installation time for double glazing in Croydon?
For most Croydon properties, window installation takes between one and three days. Replacing a single window can be completed in half a day. Your Greater London installer will carry out a free survey before the job and give you a precise timeline.
Are your Croydon window installers FENSA registered?
Absolutely. FENSA registration is a mandatory requirement for all companies in our Croydon network. It certifies that installers meet UK Building Regulations standards and automatically includes a 10-year insurance-backed guarantee on every job.
Can I replace my windows in Croydon without planning consent?
Most standard window replacements in Croydon are covered by permitted development rights and require no planning application. If your property is listed or sits within a conservation area in Greater London, additional consent from the local council may be needed — your installer can guide you through this.