2026 Sash Window Prices UK
Real 2026 installed prices for timber and uPVC sash windows — ideal for Victorian, Georgian and Edwardian homes, heritage-approved and double-glazed.
Typical UK sash window prices 2026
Per window, installed, including weights, cords and A-rated double glazing.
Prices include VAT & standard installation. Your exact quote will reflect your property & postcode.
What affects sash window prices?
The six biggest factors that push your sash window quote up or down.
Material
uPVC is cheapest but not permitted in most conservation areas. Timber is required for listed properties.
Glazing bar style
Georgian bars (multi-pane appearance) add 15–25% vs plain sashes.
Size
Larger sashes need heavier counterweights and stronger frames — priced per m².
Conservation area
Many councils require heritage-accurate timber with slim sightlines — adds ~20%.
Access
First floor and upper sashes need scaffolding or tower access, adding £300–£700.
Region
London & the South East typically 25–35% above national average for sash installers.
How much do sash windows cost in 2026?
A standard engineered timber sash costs £1,450–£1,850 installed. uPVC is ~35% cheaper; hardwood adds ~20%. A whole-house of 6 sashes in engineered timber averages £9,200.
Timber or uPVC?
- Timber — heritage-accurate, required for most listed & conservation properties. Engineered timber needs painting every 8–10 years.
- uPVC — much cheaper, virtually maintenance-free. Not always permitted in conservation areas.
- Hardwood — longest-lasting, most premium, 60+ year lifespan if maintained.
Weighted vs spring-balance
Traditional weighted sashes use cast-iron counterweights in the frame — authentic and repairable. Spring-balance sashes use hidden mechanical balances — cheaper and easier for deep reveals, but less traditional.
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