- It costs between £500 and £800 to install one uPVC sash window
- It costs roughly £5,500 to install uPVC sash windows in a three-bedroom house
- Installing a uPVC sash window can take between a couple of hours to a day
Adding double glazing to your home will mean it stays warmer for longer, looks more aesthetically appealing, and is more equipped to prevent break-ins. But double glazing costs can be quite steep.
If you want the best of both worlds – aesthetically pleasing windows for an affordable price – go for uPVC sash windows. And read about their full costs and benefits in this article.
Want to skip the reading? You can compare the best double glazed windows on the market by popping a few details about your home in our easy-to-use quote tool. We’ll pass on your details to our expert suppliers, who’ll get in touch with you with free bespoke quotes.
What type of double glazing do you need?
Get startedHow much do uPVC sash windows cost?
It costs between £500 and £800 to install uPVC sash windows in the UK. Although they’ve become more affordable over time, the cost of uPVC sash windows can mount up quite quickly. However, double glazing grants can help subsidise the costs.
To give you a rough idea of how much it’ll cost to replace all of your windows, check out the table below.
| Type of home | Number of bedrooms | Windows needed | Average cost of sash style uPVC windows |
|---|---|---|---|
Flat | 2 | 4 | £2,400 – £3,200 |
Terraced | 2 | 5 | £3,000 – £4,350 |
Semi-detached | 2 | 7 | £3,700 – £5,200 |
Semi-detached | 3 | 9 | £4,400 – £6,600 |
Detached | 3 | 12 | £6,200 – £7,550 |
Detached | 4 | 15 | £7,200 – £9,400 |
Data from Get a Window, January 2023
Want to get a better idea of how much you’ll need to pay for a new set of windows? Use our double glazing cost calculator below to find out.
How much do uPVC sash windows cost to maintain?
uPVC sash windows are very durable, which means they won’t end up costing you an arm and a leg to maintain.
Unlike wooden window frames, uPVC is weatherproof and won’t need annual treatment. However, there might be some wear and tear over time, since sash window panes slide over each other – the movement and friction might lead to some issues.
When it comes to repairing a uPVC sash window, the exact cost will depend on the issue itself. To give you a rough idea of what to expect, we’ve listed some of the most common types of sash window repair costs below.
| Repair type | Average cost |
|---|---|
Sill replacement | £240 |
Sill splice | £180 |
Stiles/front cheeks | £180 |
Replacement sash | £335 |
Draught proofing | £318 |
Sash window refurbishment | £770 |
Data from CheckaTrade, 2023
If your sash windows have worn down over time, it might be worth looking into getting them refurbished, rather than repeatedly replacing parts. However, bear in mind that this isn’t a cheap procedure – with the average sash window restoration costing around £770 per window.
Which type of uPVC sash window is the most expensive?
There’s no set price when it comes to windows, but bay windows are usually on the most expensive side of the cost spectrum.
Overall, the price of a sash bay window will depend on the number of sections it has. On average, a three-section bay window will cost £1,200, a four-section one will cost £1,650, and a five-section bay window will be closer to £2,150.
Despite the steep price, many homeowners value bay windows because of their aesthetics, as well as their ability to let in more sunlight and airflow – not to mention they increase property value.
Wooden windows are typically more expensive than uPVC ones, which is why some people get uPVC windows with a wood effect – it gives the illusion of a wooden frame at a more affordable price.
If you like the sound of a uPVC sash window with a wood effect, you’ll still have to be willing to pay a little extra. Check out the table below to compare how much more expensive uPVC sash windows are with a wood effect.
| Type of sash window | Size of window | Average cost |
|---|---|---|
White uPVC | 500mm x 500mm | £520–£625 |
White uPVC | 1,000mm x 500mm | £600–£720 |
Wood effect uPVC | 500mm x 500mm | £625–£720 |
Wood effect uPVC | 1,000mm x 500mm | £700–£800 |
What type of double glazing do you need?
Get startedWhat determines the cost of uPVC sash windows?
There’s no one-size-fits-all when it comes to windows. Generally, the cost of installing uPVC sash windows depends on:
- The size of the window pane – The bigger the window, the higher the price
- The style of the window – Installing sash bay windows will be more pricey
- Any added effects – You might have to pay an extra £100-£150 for a wood effect on a uPVC frame
- The number of windows being fitted – The more windows, the higher the price
- The area that you live in – Window installations are usually more expensive in London, compared to the rest of the UK
- The supplier and installer – Different suppliers and installers charge different rates, which means it’s a good idea to shop around for the best rate before committing to a price
- Any additional features – Certain types of glass, glazing bars, and specialist sash window locks will increase the price
How much can uPVC sash windows save me?
Paying hundreds of pounds per window mounts up quickly. If you’re having doubts about whether it’s worth it, remember that these home improvements can lead to significant savings on energy bills.
The Energy Saving Trust suggests that homeowners could save £195 per year by installing A-rated double glazed windows in an entirely single-glazed semi-detached gas-heated property. If you go one step further and replace single glazed windows with A++ rated double glazed windows, you could save up to £235 per year. It can also increase the typical home’s value by an average of 10%.
How long does it take to install uPVC sash windows?
Installing a uPVC sash window can take anywhere between a couple of hours and a day, depending on a range of factors including the size and type of window.
The number of installers that are working on the windows will also speed up, or slow down, the installation process.
Typically, bay windows take the longest to install – expect half a day to a full day – due to their intricate design.
One way you can cut back on costs is to install the double glazing yourself, but we wouldn’t recommend this – you could end up damaging your property and even injuring yourself.
Summary
- Most UK homes are suitable for uPVC sash windows, and you could save up to £195 a year by putting them in.
- Upgrading worn-out windows for these visually pleasing ones will increase property value, reduce energy bills, and reduce household emissions.
- Instead of trawling through installers, compare the best double glazing on the market by popping a few details about your home in our easy-to-use quote tool. We’ll pass on your details to our expert suppliers, who’ll get in touch with you with free tailored quotes.
