Double Glazing Cost in Wales (2026)
Double glazing in Wales typically costs between £3,800 and £5,600 - roughly 7% below the UK average. Lower labour costs in the region help keep prices competitive.
£3,800–£5,600
Typical range
£4,700
Average cost
-6%
vs national avg
1–3 days
Typical duration
Free, no obligation. Quotes from vetted tradespeople in Wales.
Important: Window installations must comply with Building Regulations. Your installer should either be registered with FENSA or a similar competent person scheme, or you will need to apply for Building Regulations approval from your local council separately.
Wales double glazing prices
Prices below reflect the typical cost of a double glazing in Wales, including materials and labour.
| Type | Details | Wales range | Wales avg |
|---|---|---|---|
| Small house (1-2 bed) | 4–6 windows, basic uPVC frames | £2,200 – £3,400 | £2,800 |
| 3-bed semi | 8–10 windows, standard uPVC throughout | £3,800 – £5,600 | £4,700 |
| 4-bed detached | 12–15 windows plus French doors | £6,000 – £9,000 | £7,500 |
All prices include materials and labour. Based on contractor submissions and market data, April 2026.
What affects double glazing costs in Wales
Double glazing costs depend heavily on the number and size of windows, the frame material, and the glass specification. In Wales, installation labour rates of £38–£52 per hour affect the fitting cost per window.
Wales has a mix of terraced housing in the valleys, stone-built cottages in rural areas, and newer developments in Cardiff and Swansea. Stone and older properties can be more complex to work on. Older properties with non-standard window sizes or stone surrounds often cost more to fit, as each window may need to be made to measure rather than using standard sizes.
Material supply is good in South Wales (Cardiff, Swansea, Newport), but delivery to Mid and North Wales can attract higher charges. The type of frame makes a difference too - uPVC is the cheapest option, timber is the most expensive, and aluminium sits in between.
Demand for tradespeople in Wales is moderate. Urban areas have good availability, while rural parts of Mid and North Wales may have longer wait times. The busiest time for window companies is typically spring and summer, so booking in autumn or winter may get you a slightly better deal.
How Wales compares
Wales double glazing costs compared to other UK regions and the national average.
| Region | Average cost | vs national avg |
|---|---|---|
| South West | £5,200 | +4% |
| Midlands | £5,000 | Average |
| WalesYou are here | £4,700 | -6% |
| National average | £5,000 | - |
| Yorkshire | £4,700 | -6% |
| North West | £4,700 | -6% |
How to get your double glazing for less in Wales
Get quotes from independent fitters, not just big brands
The large national double glazing companies often charge significantly more than local independent fitters in Wales. The products are frequently identical - the difference is in marketing and sales overhead.
Stick with uPVC unless you have a specific reason not to
uPVC frames are the most affordable option and perform well. Unless you live in a conservation area or have a listed building where timber or aluminium may be required, uPVC will give you the best value for money.
Replace all windows at once
Window fitters in Wales will give you a much better per-window price if you are replacing the whole house in one go. Doing windows one room at a time costs more in total because of the setup and scaffolding involved each time.
Frequently asked questions
How much does double glazing cost in Wales?
Is double glazing cheaper in Wales than other parts of the UK?
How long does it take to fit double glazing in Wales?
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