Sash Cost Guide
Victorian and period sash window costs, verified against real UK contractor quotes. Working calculators for repair, replacement, draught proofing and restoration.
Repair Cost Calculator
Cord replacement, draught seals, glass repairs. £80-£1,200 per window.
Draught Proofing Guide
Brush seals, compression seals, full overhaul costs. £120-£350/window.
Georgian Sash Windows
6-over-6 glazing bars, slimmer frames, period-correct restoration costs.
About This Guide
How we research costs, source accuracy, and editorial policy.
Why sash windows cost what they cost
Period sash windows need specialist skills. A Georgian 6-over-6 takes longer to restore than a Victorian 2-over-2. Listed building consent adds surveyor fees. Secondary glazing costs less than full replacement but achieves 80% of the thermal improvement.
All calculator rates verified against Checkatrade/MyBuilder quotes (2026), FENSA-certified installer pricing, and Historic England guidance. Rates date-stamped and updated quarterly.