Double glazed sash window installation cost

We're in a Victorian terrace and want to replace the old single glazed sashes with double glazed timber ones. What's a realistic price per window fitted?

Asked by Christian on 8th Aug 2026
Expert Trade Answers
"£250 to £350 depens one size level of the buildins and type of the window make etc"
Answered on 8th Aug 2026 - Member since Jul 2026 - report
"To fully refurbish the excisting case and supply and fit new sash and case windows with double glazing fully draught proofed and painted both sides 2k per window"
Answered on 8th Aug 2026 - Member since Jan 2026 - report
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