double glazing specialists in Swansea
Homeowners in Swansea use Pro-Fit Window Systems to collect free double glazing quotes from trusted local installers. Every company in our City and County of Swansea network is FENSA-registered and independently rated.
We connect you with up to 3 FENSA-registered double glazing installers near Swansea who will each provide a free, no-obligation quote. In Wales, comparing multiple quotes saves homeowners an average of £344–£1,032.
Double Glazing prices in Swansea 2026
We've compiled current installed price ranges for double glazing in the City and County of Swansea area. Actual costs depend on window size and specification — compare quotes for a precise figure.
| Window Type | From (installed) | Up to (installed) |
|---|---|---|
| Casement (single) | £301 | £602 |
| Casement (large) | £430 | £774 |
| Sash Window | £516 | £946 |
| Bay Window (3-panel) | £1,032 | £2,752 |
| Tilt & Turn | £344 | £645 |
* Prices are estimates for Swansea based on current market data. Your exact quote will depend on window size, specification and chosen installer.
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Get Quotes in Swansea →FAQs — Double Glazing in Swansea
Double Glazing prices in Swansea — what should I budget?
In Swansea, you can expect to pay from £301 for a standard casement window installed, up to £2,752 for a full bay window. Prices in City and County of Swansea are below 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 Swansea?
Most installations in Swansea take 1–3 days, depending on the number of windows. A single window replacement typically takes 2–4 hours. Installers will usually survey the property first and give you an exact timeframe during the quote process.
Are your Swansea window installers FENSA registered?
Yes. Every installer in our Swansea network is FENSA registered, which means they are certified to install replacement windows in compliance with UK Building Regulations. FENSA registration also provides a 10-year insurance-backed guarantee on all installations.
Do I need planning permission for new windows in Swansea?
For the majority of Swansea properties, window replacement is classed as permitted development and does not need planning permission. Exceptions apply if your home is in a City and County of Swansea conservation area or is a listed building, in which case local authority consent may be required.