How much does double glazing cost in the UK?
A double glazing costs £400 to £900 in the UK, typically around £550 per window. Prices reviewed June 2026.
Double glazing is priced per window, so the number and size of windows is the main factor, then frame material and glass spec.
Price your double glazing
Adjust for your job and area to get a range. Nothing is sent anywhere.
Double glazing cost breakdown
What a double glazing typically costs, by the unit:
| What | Typical UK cost |
|---|---|
| Per window, supplied and fitted | £400 to £700 per window |
| + Aluminium frames | add £150 to £350 per window |
| Typical 9 windows | £3,600 to £6,300 |
What's included in the price?
A typical double glazing price includes:
- The window unit and frame
- Removal of the old window and fitting
- Trims, sealing and certification
- Standard A-rated glass
What changes the price?
The things that move a double glazing price most:
Number and size of windows
Frame material: uPVC is cheapest, then aluminium, then timber
Style: casement is cheapest, sash and shaped windows cost more
Glass spec and any colour or finish
Does where you live change the cost?
London and the South East add around 15 to 20 percent.
Common questions
A typical three bedroom house with around 8 to 10 windows costs roughly £4,500 to £7,500 in uPVC. Aluminium or timber pushes this higher.
uPVC casement windows are the cheapest. Aluminium costs more but is slimmer and stronger, and timber is the most expensive and needs maintenance.
These are independent guide prices based on typical UK jobs in 2026. Your actual cost depends on your property, spec, access and where you live. Always get at least three written quotes before committing.