sash window installation specialists in Cardiff
If you're looking for sash window installation in Cardiff, you're in the right place. Pro-Fit Window Systems connects homeowners across Cardiff with FENSA-registered sash window installation 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.
Sash Windows prices in Cardiff 2026
Here's a guide to what you can expect to pay for sash window installation 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 — Sash Windows in Cardiff
How much does sash window installation cost in Cardiff?
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 many days will my sash window installation installation take?
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?
Absolutely. FENSA registration is a mandatory requirement for all companies in our Cardiff 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 Cardiff?
In most cases, replacing windows like-for-like in Cardiff does not require planning permission — it falls under permitted development. However, if you live in a conservation area or listed building in Cardiff, you may need consent. Your installer will advise you during the free survey.