Sash Window Costs: The Ultimate Guide 2026
Sash windows remain an ever-popular style for properties throughout the UK. Their heritage roots and elegant design features make them ideal for property owners with traditional or older buildings. And with modern variations developed in recent years, sash windows can also be a fantastic option for modern homes and new builds.
When considering how much sash windows cost, a host of factors will contribute to the overall price. While there are some things you may have already thought of, such as the quantity and size, there are many other considerations to take into account when weighing up your expenses. As the UK’s leading, authentic timber-replicated sash window manufacturer, Roseview’s ultimate guide is a reliable and handy source.
Restoration or Replacement?
The cost of a restoration differs from the cost of a replacement. This is because the materials, labour, and time involved in each process differ significantly.
A sash window restoration can vary greatly depending on the amount of work required, but it generally costs between £500 and £2000. If your sash windows need significant repairs or upgrades, such as switching from single to double glazing, the restoration cost will increase significantly. This is something to consider when weighing up the costs of sash window restoration.
Sash window replacement costs can be (but often aren’t) a more expensive option. This is because they are a better, longer-term choice if your outdated sash windows are beyond economical repair. As old timber sash windows shrink and become loose and draughty, they can be difficult to fix. While replacements can have a higher initial cost, the value of a stronger, updated window will soon prove itself to be a worthwhile investment.
A good restoration means stripping back decades of paint, replacing rotten wood, and replacing hardware and sash cords. You have to consider the process of removing the old single glass, cutting out the frames to fit new double-glazed units, and adding draught-proofing. They then need to be reconstructed and repainted.
A full restoration takes longer than replacing it with a new one and will often be more expensive. Then, even when restored, they will need repainting on average every five to six years.
One of the many benefits of replacing sash windows is that many modern designs use uPVC or timber-effect uPVC. This means they won’t require repainting, restoration, or maintenance to the same degree as timber. Sash window replacement costs around £1500 per window. However, as mentioned above, this is hugely influenced by the following factors.
Timber or uPVC Profile?
A large selection of sash windows available today is manufactured from timber or uPVC and includes double glazing. Both sash window materials have positives and negatives, but generally, homeowners will opt for uPVC because it is more convenient, low maintenance and never needs repainting.
For a uPVC sash window, you could expect to pay around £1000 to £2000 per window fitted – but this can vary depending on specification, the sash window supplier, the installer and the area you live in.
If you are looking at timber sash window costs, you can expect to pay at least £1500 per window for softwood, and significantly more for hardwood. This cost could look a lot higher depending on the company you choose to purchase your windows from and any additional costs you may incur due to customisation or size.
Size and Weight
Naturally, the size and weight of your installation can influence your sash window prices. The larger and heavier the window, the bigger and more costly the sash balances and glass. The sash balances need to be designed to support the weight of the sashes and glass, which is why they need to be bigger. It’s often assumed that the larger the sash window, the heavier it will be and the higher the price.
Larger windows also require the most materials overall. It’s always worth checking with a local supplier to understand how size and weight can affect your sash window price.
Glass Choice
The type of glazing in the window can greatly impact sash window costs. This is because certain types of glass can be heavier or more expensive to produce, which affects the overall price.
Standard glazing is the lowest-cost option and the most popular, as it is the most common and cost-effective glazing across all sash window designs.
Certain other styles can increase your sash window costs. For example, acoustic glass can drive the cost up quite a bit. This is because noise insulation is achieved by the specialised laminated glass, which is thicker, heavier and more expensive to produce.
It’s worth noting that the heavier the glass, the heavier the balances will need to be and, therefore, the more the sash window will cost.
Astragal vs Georgian Bars
If you are looking for new sash windows, deciding on the glazing bar arrangements in your windows will be important. Most homeowners want to retain the traditional appearance of their property, so they often choose an astragal bar arrangement that matches their home’s period. For example, choosing a Victorian style for a Victorian house.
The difference between astragal bars and Georgian bars is that astragal bars are fixed to the outside of the glazing on both sides, with an extra bar between the sheets of glass to create the appearance of separate panes. Georgian bars sit between the glass and, from a distance, give the impression of a glazing bar grid.
Astragal bars provide a far superior aesthetic to Georgian bars but are slightly more expensive. Much more time and effort have to go into cutting, joining, and mounting the higher-quality bars on both sides of the glass.
Furthermore, the arrangement you choose may impact the price. For example, in a Georgian arrangement, more astragal bars are required for authentic appeal than in a Victorian arrangement. Therefore, you can expect a lower cost for Victorian sash windows.
Colour, Finishes, and Foils
Colour plays a big part in the cost of your sash window. As you might have already assumed, certain colour options and foils can be more expensive than other standard sash window colours.
You can expect a lower price for a standard white uPVC sash window colour. This will often be around 30% to 50% higher for other additional colours. For example, choosing colour bonding can have an additional cost of around 40% per window.
The colour finish, such as woodgrain, can also influence the price. Our Ultimate Rose sash window can include a chalk matt or textured woodgrain finish – both of which match the traditional appearance of painted timber – at no additional cost.
Other Customisable Options
Optional extras are likely to incur extra cost on top of your sash windows, should you choose to go for them. For example, if you are looking for sash window arches, expect to pay an additional £500 per window. The internal finish of your sash windows can also influence your costs. For example, fancy timber architraves will naturally increase the cost.
Sash Windows Installation
The installation cost is likely one of your biggest considerations when it comes to sash window costs. Many installers in your area will likely offer competitive prices, so it is always best to speak to them to get a better idea of installation costs.
The installation costs will largely be influenced by the amount of labour needed. Obviously, installing more windows will be more time-consuming and therefore require more labour.
Furthermore, there can be differences depending on whether you are having new windows fitted or replacing old windows. Having prepared window openings on new builds means less time is needed than removing and replacing sash windows. This can significantly affect your sash window cost, so it is important to consider
Sash Window Costs Online
We hope that the above guide has given you a better understanding of how sash window costs are calculated and what factors can influence your overall cost.
As we have explained, without knowing exactly what each homeowner’s needs and preferences are, it isn’t possible to give a single one-size-fits-all price. Therefore, we recommend using our online sash window designer tool to better understand your sash window costs.
Our tool allows you to select the size, colour and optional extras you may want. From here, we can put you in touch with your local Approved Installer, who can provide a quote tailored to your specific needs.
Our sash window visualiser also allows you to design the perfect sash windows for your property. Tailored to your chosen colour, hardware and exterior wall type. Once you’ve picked your colours, you can start a quote for your sash window today!
Design Your Sash Windows Today!
How much do sash windows cost from the Rose Collection?
Window prices start at around £1,000 per window and can go up to £ 2,000 per window. Prices differ by model, glassing, size and finish.
What determines the cost of a sash window?
The size of your windows and the type of glazing can significantly affect the price; however, other considerations, such as whether you opt for uPVC or timber, any additional features (including sash horns), and finish or colour, may also affect how much you pay.
Is there a big difference in cost between uPVC and timber sash windows?
Yes. uPVC windows are generally more affordable, while timber sash windows start around £1,500 and can be significantly more depending on wood type and design options.
How can I get an accurate sash window quote?
You can use the online sash window cost calculator to get an instant quote based on your specifications, and request a visit from a local installer for a full price.
Are cheaper sash windows a good option?
While lower-cost windows may save money upfront, they often lack the performance, durability, and authentic look of higher-end models, leading to higher costs over time.
Categories: Rose Collection, uPVC Sash Windows
Tags: sash window costs, sash window prices, sash windows, the rose collection, upvc sash windows
