How much does secondary glazing cost in the UK?
A Secondary glazing costs £200 to £750 in the UK, typically around £375 per window. What moves the price most is the size of each window, 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.
Secondary glazing usually costs between £200 and £750 per window in the UK, with most homeowners paying around £375. The price depends mainly on the size of the window, the opening style and whether you need acoustic glass.
Secondary glazing cost calculator
Use the calculator to price your Secondary glazing in 2026. Adjust the options and area for a UK cost range. Nothing is sent anywhere.
Secondary glazing cost breakdown
Typical Secondary glazing costs, by option:
| Window size and style | Typical UK cost |
|---|---|
| Small fixed panel | £200 to £350 |
| Standard slider or hinged unit | £300 to £550 |
| Large or bespoke heritage window | £500 to £750 |
What's included in the price?
Typical Secondary glazing prices include:
- A survey and measurements of each window
- A slim secondary pane in a discreet frame fitted inside the existing window
- The frame colour and opening style matched to your window
- Fitting, sealing and clearing away
What changes the price?
The things that move Secondary glazing prices most:
The size of each window
The opening style, whether fixed, sliding or hinged
The frame material and glass, standard or acoustic
Whether it is a listed building or a heritage frame
Your region and how many windows you do at once
How the price is built up
The price covers surveying and measuring each window, making the slim pane and frame to fit the reveal, and fitting and sealing it inside the existing window. Larger windows, sliding or hinged openers, acoustic glass and heritage frames all add to the unit cost. Most of the cost is the made-to-measure unit and glass. Fitting is a smaller share, usually a few hundred pounds a day for a two-person team, and several windows are often fitted in one visit.
Ways to keep the cost down
- Do the rooms that matter most first, such as bedrooms and road-facing rooms, rather than the whole house at once
- For small windows, a DIY magnetic or film kit costs about £50 to £100 per window
- Have several windows made and fitted in one visit to share the fitting cost
- Choose standard glass unless you specifically need acoustic glass for noise
Does where you live change the cost?
In London, a Secondary glazing typically costs around £490 per window, about 30% above the UK average of £375. In the North, Scotland and Wales the guide figure is nearer £350.
| Region | From | Typical | Up to |
|---|---|---|---|
| Midlands / East (UK average) | £200 | £380 | £750 |
| London | £260 | £490 | £980 |
| South East / South West | £230 | £430 | £860 |
| North / Scotland / Wales | £180 | £350 | £690 |
Guide prices per window, scaled with the same regional multipliers as the calculator. Not quotes.
Secondary glazing cost in major UK cities
| City | From | Typical | Up to |
|---|---|---|---|
| Belfast | £170 | £320 | £640 |
| Birmingham | £200 | £370 | £740 |
| Bristol | £220 | £410 | £830 |
| Cardiff | £190 | £350 | £710 |
| Edinburgh | £200 | £370 | £740 |
| Glasgow | £180 | £340 | £680 |
| Leeds | £190 | £350 | £700 |
| Liverpool | £180 | £350 | £690 |
| London | £260 | £490 | £980 |
| Manchester | £190 | £360 | £720 |
| Newcastle | £180 | £340 | £680 |
| Sheffield | £180 | £350 | £690 |
City guide estimates, scaled by local labour costs. Indicative averages for Secondary glazing, not quotes.
London and the South East sit at the top of the range; the North, Wales and Scotland tend to be 10 to 20 percent cheaper.
Common questions
How much does secondary glazing cost per window in 2026?
About £200 to £750 per window, with most homeowners paying around £375. A small fixed panel is the cheapest option, while a large sliding unit on a sash or heritage window costs the most.
What affects the price of secondary glazing?
The main things are the size of the window, the opening style, and the glass you choose. Fixed panels are cheapest, sliding and hinged units cost more, and acoustic glass for noise or a bespoke heritage frame pushes the price up.
Is secondary glazing worth it?
For period and listed homes it usually is. It cuts draughts and noise, keeps your original windows in place, and costs far less than replacing them. It is often the only option allowed on a listed building.
Can I fit secondary glazing myself?
For small windows a DIY magnetic or film kit costs about £50 to £100 per window and is fine to fit yourself. For large windows, sash windows or heritage frames it is worth paying a fitter to get a proper seal and avoid damaging the original frame.
How long does secondary glazing take to fit?
Fitting takes under an hour per window once the units are made. A full house of 8 to 10 windows is usually completed in one or two days.
Is secondary glazing cheaper than double glazing?
Yes. At roughly £200 to £750 per window it is cheaper than replacing a window with double glazing, and it is allowed on listed buildings and in conservation areas where new frames often are not.
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.