Interactive calculator with real prices adjusted by UK region. Select your scope, pick your region, get your instant estimate.
1. Choose Scope of Work
2. Select Your Region
What Affects the Cost?
Number of windows
Window style (casement, sash, bay)
Frame material (uPVC, timber, aluminium)
Glass specification
Access and scaffolding
Removal of old windows
Building regulations compliance
Frequently Asked Questions
How much does double glazing cost UK?
Double glazing costs £300-£600 per uPVC window. A full set for a 3-bed semi (8-10 windows) costs £3,000-£6,000. Timber frames cost 30-50% more. Aluminium frames cost 50-80% more.
How much can you save with double glazing?
Double glazing can save £100-£200 per year on energy bills. Upgrading from single glazing gives the biggest saving. Payback period is typically 15-25 years on energy savings alone, but double glazing also adds property value.
Is triple glazing worth it UK?
Triple glazing costs 30-50% more than double glazing but only saves an additional £20-£40/year on energy. It is most worthwhile in very cold, exposed locations or for noise reduction near busy roads.