What is the average cost of replacing double glazing?

The average double glazed window costs £500 to £800 fitted in uPVC, with the overall UK range running from about £350 for a small casement to £1,800 or more for large or bespoke designs. Sash windows cost £800 to £1,200 in uPVC, and aluminium adds 25 to 40 per cent across the board. For whole houses, a three-bed semi averages £4,000 to £8,500 in uPVC, and the average UK full-house replacement project comes in at roughly £5,000. If only the glass has failed and the frames are sound, replacement sealed units cost £100 to £300 per window, a fraction of full replacement. Prices rose sharply between 2022 and 2024 but have largely stabilised since, so quotes from a couple of years ago need refreshing.

Please note: any prices mentioned above are estimates based on national averages. For an exact price for your home, get in touch with the Huntingdon Windows team for a free, no-obligation quote.

Thinking about new windows? Get in touch with Huntingdon Windows for a free, no-obligation quote.

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