Are composite windows much more expensive than uPVC?

We're replacing the windows across the front of the house and like the look of composite. Roughly how much more do they cost than uPVC? Worth the premium?

Asked by Charles on 31st Aug 2026
Expert Trade Answers
"if a comparable UPVC window costs £600 fitted, a composite equivalent might be around £750–£900+."
Answered on 31st Aug 2026 - Member since May 2021 - report
"Much better product, lasts lot longer, far more secure"
Answered on 31st Aug 2026 - Member since Oct 2019 - report
"Yes they are considerably more about 50% more than u.p.v.c"
Answered on 1st Sep 2026 - Member since Apr 2025 - report
"The reason is that composite windows usually combine materials such as timber internally with aluminium externally, giving a more premium appearance, better durability and potentially better thermal performance. They're more commonly specified on higher-end properties and developments."
Answered on 13th Sep 2026 - Member since Dec 2025 - report
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