How much does double glazing cost in the UK?

Double glazing in the UK typically costs between £3,000 and £12,000 depending on the size of the property, the number of windows, and the materials used. Smaller homes with only a few windows will cost less, while large detached houses with premium frames can cost significantly more.

Typical double glazing costs

Average prices for replacing windows in the UK are:

Terraced house (7–9 windows): £3,000 – £5,000
Semi-detached house (10–12 windows): £4,500 – £7,000
Detached house (15–18 windows): £7,000 – £12,000+

These prices usually include installation and removal of old windows.

Cost per window

Typical UK window prices are:

uPVC window: £400 – £700 per window
Aluminium window: £600 – £1,000 per window
Timber window: £800 – £1,500+ per window

uPVC is the most common and usually the most affordable option.

What affects double glazing prices?

Several factors influence the final cost:

number of windows
frame material (uPVC, aluminium, timber)
window size
glazing type
installation complexity
property access
location in the UK

How much can double glazing save?

Modern double glazing can reduce heat loss and improve insulation. Many homeowners report energy savings of £100 to £250 per year depending on the size and energy efficiency of the property.

How long does double glazing last?

Most modern double-glazed windows last 20 to 30 years with proper maintenance.

Frequently asked questions