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Last updated: 09 June 2021

UPVC Sash Windows

Why Choose uPVC Sash Windows?

The main reasons to choose uPVC sash windows are the low cost, the easy maintenance, durability, and the energy efficient insulation. What is more, they come in various styles and colours. A specific special feature of the uPVC sash window is the elegant yet traditional look.

When considering what type of uPVC windows would be suitable for you home, uPVC sash windows are definitely worth checking out. The sash window used to be a popular window in the Georgian and Victorian era's. Fortunately, it has made its come back and the sash window is one of the uPVC window styles that is an elegant and functional option when you are renovating your home.

If you want to find the uPVC sash window that is most suitable for your home, simply fill in the form above and get up to 4 free quotes from our suppliers, free of charge, and without any obligations.

uPVC Sash Windows

How Do uPVC Sash Windows Work?

uPVC sash windows work by means of a sliding mechanism called torsion balance. With a uPVC sash window you can open your window vertically for easy ventilation with a traditional look.

The sliding system is an upgraded version that the traditional sash windows had back in the Georgian era. There are tubes within uPVC sash windows, and these tubes facilitate the smooth sliding motion for vertical openings. The tubes inside the windows are also easy to fix and maintain in case of any faults.

There are two general types of uPVC sash windows:

  1. Single hung: means that only one sash casement slides vertically
  2. Double hung: means that both sash casements can slide vertically

How Do You Assess the Energy Efficiency of uPVC Sash Windows?

When rating a window for its energy efficiency, there are two types of measures taken into account:

Window Energy Rating (WER)

This measures a window’s overall energy efficiency. For example, the amount of heat it lets in and how much it lets out. Window Energy Ratings can range from A++ to G, where A++ is the most efficient. In England, windows have to have a rate of C or better.

The rating of your uPVC sash window depends on its features: a double glazed window gets a better rating than a single glazed window because of the multiple insulating layers. BFRC is the official organisation determining the rating of uPVC sash windows.


A U-value is a measure that shows how effective a type of material acts as an insulator. The lower this level, the better the material is as a heat insulator.

The U-value of a new double glazed windows will be around 1.2. Similarly, triple glazed sash windows receive a lower score. If you choose a single glazed uPVC sash window, this rate will be higher.

You should take into consideration not only the energy rating, but also the size of your house, the way you heat your home, and the size of your uPVC sash windows. All of these factors can majorly influence the amount of money you can save on your energy bills.

Good to Know
If you are wondering what the regulation standards are for windows in the UK, BSI can help you with more information about the regulation in the UK.

How Much Do uPVC Sash Windows Cost?

In general, uPVC sash windows cost between £520-£960. This depends on what type of uPVC sash window you are thinking of buying. If you want to compare prices of different styles of uPVC Windows: uPVC window prices.

Price List of uPVC Sash Windows
Type of uPVC Sash Window Window Size Price Range
White 500mmx500mm £520-£625
1,000mmx500mm £600-£720
1,000mmx1,000mm £625-£730
1,200mmx1,200mm £720-£830
Wood Effect 500mmx500mm £625-£720
1,000mmx500mm £700-£800
1,000mmx1,000mm £720-£830
1,200mmx1,200mm £840-£960


If you are thinking of installing sliding sash windows in your entire house, you can calculate how much the total cost is going to be, according to how many bedrooms you have in your home.

Price List According to the Number of Bedrooms
Number of Bedrooms Number of uPVC Sash Windows (1000mmx500mm) White Wood Effect
2 4 Windows £2,400-£2,880 £2,800-£3,200
3 9 Windows £5,400-£6,480 £6,300-£7,200
4 15 Windows £9,000-£10,800 £10,500-£12,200

The standard size used of a sliding sash window has a width of 1,000mm - 2,000mm with heights of 500mm - 1,500mm.

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What Are Advantages of uPVC Sash Windows?

In general there are many advantages of uPVC windows advantages of uPVC windows, and specifically uPVC sash windows ffer these advantages: 

Low Cost

Sash windows made of uPVC material are somewhat cheaper than sash windows made of other types of materials. If you are on a budget, then this is definitely a window style you could consider.

Traditional Charm

The first thing you notice when you see a uPVC sash window is its traditional look. It is a classic design that relates to the Georgian and Victorian architecture which, at the same time, offers modern performance. This is what makes sash windows special compared to other uPVC window styles.

Advantages uPVC Sash Windows

Energy Efficiency

Due to its strong insulation features, the uPVC sliding sash window reduces the energy bills of your household. This means you can have a beautiful window and think of the environment at the same time.

Noise Reduction

uPVC sash windows have a good reputation when it comes to reducing noise. It is a comfortable thought to know that you have the possibility to shut out most external noise. This way, you can create peace in your home whenever you need it.


Sash windows have an overall reputation of being reliable and secure. Your home will be safe and you will be able to trust that it is.

Low Maintenance

The benefit from having uPVC sash windows is that all they need is an occasional wipe down. They will not rot or rust like timber sash windows would, for example. This makes them very easy to take care of.


Compared to wooden frames which are affected by the weather, a uPVC frame is completely waterproof and will not easily get affected by any type of precipitation.

Style Variety

There are different coloured uPVC windows that come in many different styles and sizes. The most popular colours are white, black, brown, and grey uPVC windows. The same applies for uPVC sash windows. This way, you can renovate your home according to your personal taste and home design.

What Are Disadvantages of uPVC Sash Windows?

Precise Fitting

Just like any other type of window, it is very important that they are perfectly fitted. If you get this done wrong, the insulation might not be as effective as it is designed to be. In addition, if it is not properly placed, the window can have the tendency to stay open due to the imbalance of the window. So make sure you get it done by a professional.

Imitation of Timber

A uPVC sash window will only be able to imitate a timber sash window in the way that it looks. It will never look exactly the same. Therefore, it is important to know what is more important to you when you are choosing a sash window: insulation and easy maintenance, or the real wooden look and feel.

House Value

Wooden sash windows are more desirable for future buyers thanks to their unique look. However, their maintenance cost and more frequent replacement reduces the long-term value difference, especially if calculating in the energy savings thanks to the better insulation.

What Styles of uPVC Sash Windows Are Available?

There are many types of uPVC sliding sash windows but there are two types which are currently the most popular:

Georgian Sash Windows

The Georgian sash window is a well-known and popular window style. It consists of two casement windows with six or more tiles in each window.

Within this style there are alternative options for the casement windows. For example, you could choose to have only one casement window with six tiles and the other one with one tiles (called Half Georgian). Alternatively, the pattern of the tiles could be different (called Georgian Variant). The possibilities are almost endless.

Victorian Sash Windows

The Victorian sash window, while similar to the Georgian style, is different from the Georgian sash window in the way that the there are fewer tiles within the casement window.

The Victorian sash window has two casement windows with two tiles in each window. This style also offers alternative options. For example, you could choose to have only one casement window with two tiles and the other casement could be with only one tile.

Georgian versus Victorian Sash Windows

When you are choosing the style of uPVC sliding sash window, it is also important to think about having a single hung or a double hung sash window. The difference between these two has to do with how much vertical mobility you prefer.

If you prefer to combine the horizontal with vertical mobility, tilt and turn windows may be the option to consider. 

Grey uPVC Sash Windows

One of the most popular uPVC sash window styles used in the UK is the grey coloured version. There are various shades of grey that you can also choose from, such as light grey or anthracite; this comes down to personal taste.

Wood Effect uPVC Windows

Another popular uPVC sash window type is the wood effect uPVC sash window. This type of window imitates the look of natural timber. This type of sash window gives your home an authentic look while keeping the energy-efficient features of modern uPVC windows.

Find the Best uPVC Sash Window Suppliers in the UK

Windows are the eyes of your home. When renovating your home, you want to make sure you are choosing the right windows. Deciding between all the different prices, styles, and types of materials could be overwhelming. If you would like to get advice or help in finding the right uPVC sash windows for your home, then you are in the right place.

To compare prices of different suppliers in the UK, simply fill in the form at the top of this page and get up to 4 free quotes from our suppliers, free of charge, and without any obligations. By filling in the form, we can help you save time and money and support you in your decision-making.

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Attila Tamas Vekony
Written by Attila Tamas Vekony, Former Writer

Attila is the UX Manager at GreenMatch. He holds a degree in international business with four years of coordination experience in marketing, user experience, and content creation. Attila likes to write about solar energy, heating technology, environmental protection, and sustainability. His and his team's articles appeared in well-known sites such as The Conversation, Earth911, EcoWatch, and Gizmodo.