window replacement specialists in Cardiff
If you're looking for window replacement in Cardiff, you're in the right place. Pro-Fit Window Systems connects homeowners across Cardiff with FENSA-registered window replacement installers who offer free, no-obligation quotes.
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 Wales saves £352–£1,056 by comparing quotes rather than accepting the first offer.
Window Replacement prices in Cardiff 2026
Here's a guide to what you can expect to pay for window replacement in Cardiff. All prices are installed costs — use our free tool to get your exact local quote.
| Window Type | From (installed) | Up to (installed) |
|---|---|---|
| Casement (single) | £308 | £616 |
| Casement (large) | £440 | £792 |
| Sash Window | £528 | £968 |
| Bay Window (3-panel) | £1,056 | £2,816 |
| Tilt & Turn | £352 | £660 |
* Prices are estimates for Cardiff based on current market data. Your exact quote will depend on window size, specification and chosen installer.
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Get Quotes in Cardiff →FAQs — Window Replacement in Cardiff
Window Replacement prices in Cardiff — what should I budget?
In Cardiff, you can expect to pay from £308 for a standard casement window installed, up to £2,816 for a full bay window. Prices in Cardiff 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 Cardiff?
Most installations in Cardiff 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 the window fitters in Cardiff properly certified?
Yes — we only work with FENSA-registered installers in Cardiff and across Cardiff. FENSA certification confirms compliance with UK Building Regulations, and every installation is backed by a 10-year insurance guarantee as a result.
Can I replace my windows in Cardiff without planning consent?
Most standard window replacements in Cardiff are covered by permitted development rights and require no planning application. If your property is listed or sits within a conservation area in Cardiff, additional consent from the local council may be needed — your installer can guide you through this.