Windows
What double, triple and secondary glazing cost, what they save, and when replacing windows is worth it.
The short answer
- £500 to £1,250 a window for standard uPVC double glazing, supplied and fitted
- £8,000 to £15,000 for a 3 bed house; around £4,800 for a set of A-rated windows for a semi (Energy Saving Trust)
- £85 a year saved replacing single glazing in a semi; secondary glazing suits listed homes
From Double Glazing Cost.
Calculators
Guides
Double Glazing CostDouble glazing costs about £500 to £1,250 a uPVC window and £8,000 to £15,000 for a 3 bed house. Triple and secondary glazing, the saving and planning rules.
Is Double Glazing Worth It?Is double glazing worth it? Not for the bill: £4,800 saves about £85 a year, about 56 years to pay back. Comfort, noise, condensation and EPC are the reasons.Double Glazing Cost Per WindowDouble glazing costs £500 to £1,250 per uPVC window and £700 to £1,500 for a sash. Timber is at least 50% more and triple glazing around 20% more than double.