Blog>Cost Guides>uPVC sash windows cost guide
Last updated: 4 July 2025
uPVC sash windows cost guide
From reducing your annual heating bills to boosting your property value, this job is worth undertaking if you have the budget. What's more, modern uPVC sash windows don't require much maintenance at all. While timber needs revarnishing and repainting to keep them at their best, uPVC sash windows are a blessing for their ease and aesthetic. But how much do uPVC sash windows cost?
Replacing the windows in your house may not be the most glamorous cosmetic change, but the benefits are well worth the investment. So how much do uPVC sash windows cost? To give you an idea of the budget you should set aside, we've put together the following guide.
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uPVC sash windows cost
The cost of uPVC sash windows has become more affordable over time as materials have become cheaper and more installers have entered the market.
On average, installing uPVC sliding sash windows costs within the region of £500 and £800 (per window), depending on the materials used and the size of the windows installed.
How much do uPVC sash windows cost?
| Type of sash window | Size of window | Average cost |
|---|---|---|
| White uPVC sash window | 500mm x 500mm | £520 - £625 |
| White uPVC sash window | 1000mm x 500mm | £600 - £720 |
| Wood effect uPVC sash window | 500mm x 500mm | £625 - £720 |
| Wood effect uPVC sash window | 1000mm x 500mm | £700 - £800 |
| Last updated: October 2024 Our costs are ballpark averages - get a local tradesperson to quote now | ||
What affects the cost of uPVC sash windows?
Double or triple glazing: As you would expect, double glazed uPVC sash windows cost less than triple glazed sash windows, which are around 35% more expensive on average
Access: Also, if your windows aren't the easiest to access or your building suffers from structural damage, you may have to up your budget to account for the access equipment required
Style: The average cost of uPVC sash windows is also determined by the aesthetic you want to achieve. For example, if you want a wood effect window or coloured uPVC, the price will be on the higher end of the scale
Labour rates: Window fitters will usually provide a quote to cover both the supply of the materials and the installation. It's worth keeping in mind that, just as most home improvement jobs, these costs will usually be higher in London and the South East of England
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FAQs
Do uPVC sash windows add value?
In short, yes. Sash windows are stylish and ever-growing in popularity with homeowners.
They come in a range of designs and feature bespoke, decorative bars that create a distinctive look guaranteed to boost your home's market value
Along with the appearance, the improved Windows Energy Rating will inevitably add value to any property the sash windows are installed into
Further, since uPVC is so easy to maintain, opting for this material to update your windows will save the next owner from having to repaint or replace the frames
If you live in a house that was built before the turn of the millennium, there's no doubt that installing replacement sash windows would increase the property's overall value.
Should I replace all windows at once?
Yes. Although it sounds like a big task, replacing all your windows at once will save you having to update each one individually in the future. If you have the budget for it, installing uPVC sash windows throughout your home will heighten the energy efficiency of the property.
Since the material is so durable, you won't have to worry about replacement for quite some time. If the windows in your home are more than 20 years old, now is a good time to replace the lot. With a couple of checked installers on the job, this is likely to take a couple of days maximum.
How many years do uPVC windows last?
While timber windows need replacing or repainting every ten years or so, uPVC windows typically last around 20 years on average.
If you had your uPVC sash windows installed around 1999, you'll probably need to replace them soon — if you do, it may be wise to consider triple glazing. Although this will cost more upfront, the savings to your energy bill will be worth it in the long-term.
Can I install uPVC sash windows by myself?
Window installations can be complicated, and if you do not have any previous experience with window installation, we recommend contacting a checked tradesperson for assistance. A botched installation could lead to an annoying draught at best and risk your health and safety at worst.
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