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Double Glazed Sash Windows Cost in the UK (2024)
- By installing double glazed sash windows, you can save between £140 and £150 per year on your energy bills.
- Double glazed sash window costs range from £240 to £1,860 per window, depending on the window size and frame material you opt for.
- Double glazed sash window installation costs range from £200 - £900, depending on the size of your home and the complexity of the installation.
Curious about how much double glazed sash windows cost? You’re in the right place. In this guide, we’ll walk you through current market prices, installation costs, as well as the factors that affect the cost of double glazed sash windows.
Currently, the costs range from £240 to £1,860 per window. Whether your expenses will be on the lower or higher end of this range depends on the frame material you choose, the size of your windows, as well as the number of windows you’ll need. The costs will also be heavily influenced by the installer you choose to work with.
The surest way to avoid overspending on your new double glazed sash windows is to compare quotes from multiple installers. Thankfully, you don’t need to spend hours looking for those on your own. By clicking below, you can request quotes from up to 4 window installers from our network of specialists. It’s quick, easy, and completely free!
- Quotes from local engineers
- Payment by finance available
- Save up to £140 per year
Cost of double glazed sash windows
The current double glazed sash windows cost in the UK ranges from £240 to £1,860 per window. One of the key factors that determines how much new windows cost is the frame material from which the sash windows are made.
The table below shows the estimated price of double glazed sash windows in each of the most popular materials:
| Double glazed sash window costs per window* | |
|---|---|
| Window material | Estimated cost per window (supply only) |
| uPVC | £300 - £1,065 |
| Aluminium | £390 - £1,390 |
| Wooden | £450 - £1,600 |
As you can see, double glazed uPVC sash windows are the cheapest option. This has to do with how easily this material is produced. Wooden frames, on the other hand, are the most expensive, but also the most durable of the materials. Aluminium sash window prices are somewhere in between the other two.
While double glazing provides increased home security, weather resistance, and energy efficiency, you can also choose a special type of glass that can enhance the overall quality of the windows. Here’s what each glass type can add to your sash windows:
- Toughened glass: Also known as tempered glass, it provides added safety since the thickened glass protects against vandalism or forced entry. This glass also improves insulation and thermal efficiency.
- Annealed glass: This is more durable and resistant than standard glass. Although it's not quite as durable as toughened glass, it is a cheaper option, making it a cost-effective alternative.
- Low-E glass: Low-emissivity glass helps reduce heat loss because of its ultra-thin coating that prevents heat from passing through it. This increases energy efficiency and can lead to reduced energy bills in the long run.
- Self-cleaning glass: This type of glass has a transparent coating that breaks down dirt and debris, making it a great solution for windows that are hard to reach.
Want to know how these different types of glass can impact the total cost of double glazed sash windows? Check the table below for an estimation of the average cost per glass type:
| Glass type average cost | |
|---|---|
| Glass type | Price (per square metre) |
| Toughened glass | £30 – £100+ |
| Annealed glass | £25 – £50 |
| Low-E glass | £30 – £60 |
| Self-cleaning glass | £25 (glass coating treatment) |
Double glazed sash windows installation cost
On average, the installation costs for double glazed windows range from £200 - £300 per day. Considering that the installation process can take between 1 and 3 days, this means that the costs can reach up to £900.
Below, you can find an overview of the cost of double glazed sash windows including installation for an average 2 - 3 bedroom house:
| Estimated double glazed sash window costs + installation* | ||
|---|---|---|
| Estimated window cost | Estimated installation cost | Estimated total cost |
| £2,400 - £16,000 | £200 - £900 | £2,600 - £16,900 |
Double glazed sash windows savings
While the costs of installing double glazed sash windows are significant, they will pay off in the long run. Due to its insulation properties, double glazing can improve your home’s energy efficiency. As a result, you can save money on your energy bills..
If you install A-rated double glazed windows, you can expect to save up to £140 yearly. With A++ windows, these savings can reach up to £150 per year. Considering that double glazing can remain energy efficient for up to 30 years, these savings will add up significantly over time.
Ready to reap the financial rewards of double glazed sash windows? Then your next step is finding a reliable installer to work with. With our free quotes service, doing so couldn’t be easier. Simply fill in our 30-second form and we’ll connect you with up to 4 local window installers. Click below to get started now!
- Quotes from local engineers
- Payment by finance available
- Save up to £140 per year
What determines the cost of double glazed sash windows?
How much double glazing sash windows cost depends on several factors. These include:
- Window size: Smaller windows (600 x 900mm) cost between £240 and £1,485, whereas large windows (1400 x 1400mm) cost between £345 and £1,860. Medium-sized windows (900 x 1200mm) are about £300 - £1,600.
- Frame material: How much double glazed sash windows cost in the UK varies based on whether you opt for uPVC, aluminium, or wooden frames. Whereas uPVC is the cheapest option, double glazed wooden sash windows cost quite a bit more. Aluminium window prices range somewhere in between the other two materials.
- Number of windows: How many sash windows you’ll need depends on the size of your home. As a reference, you can keep in mind that an average 2 - 3 bed house needs about 8 - 10 windows, which cost between £2,600 - £16,900 to install.
- Type of glass: Whether you opt for toughened, annealed, low-E, or self-cleaning glass, you may notice a difference in the cost of double glazed sash windows per square metre.
Are double glazed sash windows the right choice for my home?
Investing in double glazed sash windows can be a great option if you’re looking to give your home a charm reminiscent of historical buildings, while not compromising on energy efficiency. They can help you reduce your annual energy bills, increase your property value, and enhance your home’s safety.
However, all those benefits don’t come cheap. With the cost of double glazed sash windows ranging anywhere from £240 to £1,860 per window, your total expenses can reach up to £16,900 when installing them in a 2 - 3 bedroom house. So, to avoid overspending on your new windows, you’ll want to compare multiple installer quotes to find the lowest service costs.
Instead of wasting hours of your precious time reaching out to installers by yourself, let us help you get the ball rolling in just 30 seconds. Just fill in our short form and we’ll send you up to 4 quotes from installers vetted by us. So, what are you waiting for? Click below to start looking for the best deal today!
- Quotes from local engineers
- Payment by finance available
- Save up to £140 per year
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- Quotes from local engineers
- Payment by finance available
- Save up to £140 per year