Timber sash prices · 2026
Timber Sash Window Cost UK
Timber sash windows sit at the premium end of the replacement market. They combine a more expensive frame material with the sliding-sash mechanism, and they are often chosen for period appearance rather than lowest initial cost.
Quick price answer: Our engineered timber sash model gives £1,120–£2,036 for one medium window and £6,723–£12,214 for six. The equivalent medium uPVC sash benchmark is £665–£1,156.
Timber sash cost examples
The examples below use engineered timber rather than premium hardwood heritage specification.
Figures are modelled UK-average fitted-market estimates from the Window Price Calculator engine, using its 24 September 2026 research refresh. They include ordinary removal, standard fitting, basic making good and VAT; scaffolding, hidden structural repairs and highly bespoke work can sit outside the range.
Why timber sash windows cost more
The premium comes from both the material and the product design.
Timber frame
Engineered timber requires more expensive material, finishing and manufacturing than standard uPVC. Bespoke paint or stain specifications can add further cost.
Sash mechanism
Sliding sashes need balances, meeting rails, locks and careful alignment. A sash is a more complex product than a simple fixed pane or standard casement opener.
Where real quotes can exceed these examples
Timber work is particularly sensitive to specification.
- Premium hardwood or heritage-replica joinery rather than engineered timber.
- Listed-building or conservation requirements that restrict profiles, glass or detailing.
- Box-frame repairs, rotten surrounding timber or specialist making good.
- Bespoke glazing bars, horns, deep cills, arch heads or unusual colours.
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Questions people ask
How much does a timber sash window cost?
Our current engineered-timber medium benchmark is £1,120–£2,036 fitted at UK-average pricing.
How much are six timber sash windows?
A six-window engineered timber sash project models at £6,723–£12,214, assuming straightforward replacement conditions.
Is uPVC sash much cheaper?
Yes in the model. A medium uPVC sash is £665–£1,156, which is materially below the timber equivalent.
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Choose timber sash in the calculator, add rough sizes and quantity, then apply your region for a more useful project estimate.
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