How much does a sash window cost in the UK?
A Sash window costs £250 to £3,000 in the UK, typically around £1,200 per window. What moves the price most is timber or uPVC, so a simpler job sits near the bottom of that range and a larger or higher-spec one near the top. Prices reviewed June 2026.
A sash window usually costs between £250 and £3,000 in the UK, priced per window. Draught-proofing or refurbishing an existing sash runs about £250 to £650, while a new timber or uPVC replacement is typically around £1,200. The price depends mainly on the material and whether you repair or replace.
Sash window cost calculator
Use the calculator to price your Sash window in 2026. Adjust the options and area for a UK cost range. Nothing is sent anywhere.
Sash window cost breakdown
Typical Sash window costs, by option:
| What you need | Typical UK cost |
|---|---|
| Refurbish or draught-proof existing | £250 to £650 |
| New uPVC sash window | £850 to £1,600 |
| New timber sash window | £1,200 to £3,000 |
What's included in the price?
Typical Sash window prices include:
- A survey and made-to-measure sliding sashes
- Removal and disposal of the old window
- The new sash unit with cords, weights or spring balances
- Fitting, draught seals and making good the reveals
What changes the price?
The things that move Sash window prices most:
Timber or uPVC, and softwood or hardwood
Refurbishing the existing sash versus a full replacement
The size of the window and the number of panes
Your region
Access above ground floor and any rot repairs needed
How the price is built up
A replacement price covers the survey, the new sashes made to size, removing and disposing of the old window, and fitting with new cords or balances, draught seals and making good. Timber, hardwood, larger sizes and multiple panes all add to the total. A refurbishment price is mainly labour to ease the sashes, replace cords and rout in draught-proofing. On a replacement, the made-to-measure sash unit is the largest part of the cost and labour is usually £150 to £300 per window. On a refurbishment there is little material cost, so you are mostly paying for the specialist's time to overhaul and seal the sash.
Ways to keep the cost down
- Refurbish and draught-proof sound sashes rather than replacing them
- Do several windows or a whole elevation in one visit to lower the per-window price
- Choose softwood over hardwood and a standard white or off-white finish
Does where you live change the cost?
In London, a Sash window typically costs around £1,600, about 30% above the UK average of £1,200. In the North, Scotland and Wales the guide figure is nearer £1,100.
| Region | From | Typical | Up to |
|---|---|---|---|
| Midlands / East (UK average) | £250 | £1,200 | £3,000 |
| London | £330 | £1,600 | £3,900 |
| South East / South West | £290 | £1,400 | £3,400 |
| North / Scotland / Wales | £230 | £1,100 | £2,800 |
Guide prices per window, scaled with the same regional multipliers as the calculator. Not quotes.
Sash window cost in major UK cities
| City | From | Typical | Up to |
|---|---|---|---|
| Belfast | £210 | £1,000 | £2,600 |
| Birmingham | £250 | £1,200 | £2,900 |
| Bristol | £280 | £1,300 | £3,300 |
| Cardiff | £240 | £1,100 | £2,800 |
| Edinburgh | £250 | £1,200 | £2,900 |
| Glasgow | £230 | £1,100 | £2,700 |
| Leeds | £230 | £1,100 | £2,800 |
| Liverpool | £230 | £1,100 | £2,800 |
| London | £330 | £1,600 | £3,900 |
| Manchester | £240 | £1,200 | £2,900 |
| Newcastle | £230 | £1,100 | £2,700 |
| Sheffield | £230 | £1,100 | £2,800 |
City guide estimates, scaled by local labour costs. Indicative averages for Sash window, not quotes.
London and the South East carry a 20% to 30% premium; the North, Wales and Scotland are typically cheaper for the same work.
Common questions
How much does a sash window cost in 2026?
Between about £250 and £3,000 per window. Draught-proofing or refurbishing an existing sash is £250 to £650, a new uPVC sash is roughly £850 to £1,600, and a new timber sash is £1,200 to £3,000. Most people replacing a window pay around £1,200.
What makes a sash window more expensive?
Material and size are the biggest factors. Hardwood timber costs more than softwood or uPVC, large windows and multi-pane astragal bars add labour, and non-standard colours or heritage glass push the price up. Rot repairs and upper-floor access also add cost.
Is it cheaper to repair or replace a sash window?
Repair is much cheaper. Refurbishing and draught-proofing a sound sash costs £250 to £650, against £850 or more to replace it. If the frame and box are in good condition, an overhaul is usually the better-value option.
Can I draught-proof a sash window myself?
Basic self-adhesive brush strip and foam kits cost £15 to £40 per window and help a little, but they wear quickly. A proper routed brush-pile system fitted into the beads by a specialist lasts far longer and seals better, which is why most people pay to have it done.
How long does it take to fit a sash window?
A single replacement sash window usually takes half a day to a full day to remove and fit. Draught-proofing an existing window takes a few hours, and a whole house is often completed over one or two days depending on the number of windows.
Are uPVC sash windows cheaper than timber?
Yes. A uPVC sash window is typically £850 to £1,600 fitted, while softwood timber starts around £1,200 and hardwood can reach £3,000. uPVC also needs less maintenance, though timber is usually required on listed or conservation-area properties.
These are independent guide prices based on typical UK jobs in 2026. Your actual cost depends on your property, spec, access and where you live. Always get at least three written quotes before committing.