The Ultimate 2023 Cost Guide to Casement Windows

Written by  John Davies
Last updated: October 18, 2023

Casement windows are one of the most popular and diverse window designs for new builds as well as more traditional buildings. Their simple shape makes them easily adaptable to different styles and easily customisable too. This popular window design does come with its own costs which you should be aware of before incorporation them into your home’s architecture.

Casement Windows Full Cost Breakdown

The cost of a casement window very much depends on the size of the frame and the design of the window. Different casement window designs determine how the window opens and the types of hinges fixed to the casement window. Typically, casement windows open like a door does, however they can also be opened using a handle instead of a crank. Of course, there are some homes that have casement windows that do not open, known as fixed casement windows. The mechanism therefore also has an influence over the cost of a casement window. 

Window Size Hinge Type/ Window DesignBallpark CostAdditional Frame Material Costs
500 X 500Fixed£150 – £200uPVC + 15-20%
Single Sided Hinge£250 – £300Aluminium + 30-50%
French (Double Doors)£450 – £500Timber + 30-50%
1000 X 1000Fixed£200 – £250
Single Sided Hinge£275 – £325
French (Double Doors)£500 – £550
12000 x 1200Fixed£250 – £300
Single Sided Hinge£350 – £400
French (Double Doors)£525 – £575

It’simportant to note that the above mentioned costs do not include the price of the installation. Installation costs are usually determined by the size of the window you want to install, the labour costs associated with the project as well as the location of the installation site. 

The frame you choose for your casement window installation will also affect the cost. The cheapest material to use for your casement window frame is uPVC with the most expensive usually being aluminium or timber. This also depends on the level of customisation you implement on your frame. 

Should You Replace or Restore Your Casement Windows? 

Replacing or restoring your casement windows can be more or less cost effective depending on the materials used for the project. For example, restoring casement windows with wooden frames is more expensive than replacing them completely. This is because it’s difficult to get the same wooden effects on worn wood during restoration.  

However, if the repair is needed in the glass of the window pane, it is definitely cheaper to repair the glass than it would be to replace the entire casement window. Always make sure you get an expert opinion on the cost of restoring vs repairing casement windows before you make a decision. There are always multiple ways to resolve casement window issues. 

Casement Window Profile

One of the main benefits of installing casement windows is the fact that they are incredibly versatile in their design. Casement windows are typically square or recstangular in shape making them ideal for traditionally styled homes but also easily adaptable for more modern dwellings. 

For a more traditional cottage aesthetic, many people prefer to use wooden frames to completement older stone or brick work. However, there are also uPVC designs which give a similar wooden effect. These are usually much cheaper than actual timber frames. Aluminuim and white uPVC frames are hugely popular for more modern designs. Aluminium frames are highly durable but more expensive to customise. 

The Size and Weight of Casement Windows

The size and weight of a casement window affects the cost of the overall installation project as well as the size of the window itself. The larger the actual caseent window, the more material has to be used to construct it. 

The weight of a casement window also goes up the larger the casement window it. This is what usually impacts the installation costs of the window. When there is a heavier, more bulky window to install, there are more transport and labour costs associated with the installation. For this reason, the cost of the overall installation will go up. 

Casement Window Glass Types

If you live in a cooler country like the UK, you will probably want to have triple or double glazing on your casement windows. The more layers of glazing a casement window has improves insulation and therefore reduces energy and heating costs. 

Many homeowners also prefer to have sound proof glazing, which keeps the sound made inside the house from escaping and disturbing the neighbours or surrounding establishments. On the other hand, many people also prefer to have soundproof glass if they find themselves next to a busy road or in an area that has several reseidnets or businesses in close proximity. This means they will not be as affected by noise inside their homes. 

Double or triple glazing is, ofcouse, more expensive than single glazed windows. They are, however, more durable and more cost effective. Having double or triple glazing can save you money in the long run. 

Casement Window Frame Colour

The frame of your casement windows are easily customisable depending on the material it’s made from. Modifying the colour on a wooden framed window is far easier than any other material. 

If you have wooden-framed casement windows and what to jazz up it’s colour, all you need to do is find a suitable paint product. The paint colour you choose has to be able to withstand outdoor weather elements like wind, rain, and intense sunshine for the summer months. For this reason, it’s always best to go withaweather rppof paint to reduce wear and tear on the frame. 

When you opt to custom colour your aluminium or uPVC casement window, there is a lot more to it than simply giving your window frame a lick of paint. uPVC can be coloured using colour blasting, which effectively seals the desired colour into the material. This process can be expensive but the outcome is worth it, as the colour and material is more durable than wood. A similar process is applied when colour coating aluminium frames. 

Other Casement Window Customisation Options

There is more to customising your casement window design than simply changing the colour of your window frames. Although customisation can cost a fair amount, it’s sometimes worth it to be able to bring out your own unique style. Let’s take a look at some of the other ways you can customise your casement windows. 


Traditionally, casement windows are rectangular or square shaped. However, there are some designs than play with other polygons including diamonds or hexagons for those of you who are particularly creative. Custom-shaped casement windows usually open on a single hinge as this is the easiest mechanism to implement.

Remember, custom shaped windows require custom shaed frames and installation spots too, therefore there are usually additional costs associated with shaping the window panes, framed and foundations. 

Hinge Type

You can choose between several traditional hinge designs for your casement windows. French designs are very popular particularly for larger rooms. This is where two halves of the casement window open up. This is a great option for homes that look out over a landscape, garden or or park. 

For smaller windows, a single hinge is preferred, although you are not limited to which side of the casement window you elect to put the hinge onto. The more hinges on your casement window the more expensive the installation will be, but don’t be afraid to play around with different opening mechanisms. 

Custom Glass

Customeised glass is a popular feature for spaces in the home that require some privacy from the outside. Think about frosted or tinted glass in bathrooms for example. Some homes with an artistic flair also elect to sandblast custom designs onto the window pane, creating an image or design across the front of it. These projects can be more expensive depending on the size of the sandblasting design. 

Casement Window Installation: What You Need to Know Beforehand

Before you undergo your casement window installation project, you need to understand what costs are associated with the project. As a general rule, the more customisations you add to your casement window design, the more expensive the project costs will be. 

If you hire a contractor, always make sure you get a full cost breakdown when you receive a quote. It may also be a good idea to get several quotes from different contractors to make sure you are using your casement window budget optimally. 

It’s also vital to have a proper survey done of the site before you start with the installation especially when it comes to the placement of the windows. Aspects like the supporting walls surrounding the windows and the consideration of the size of the walls need to be properly laid out into comprehensive plans before work can proceed. This will mitigate the risk of running into any unexpected surprises along the way. 

When it comes to labour costs, always make sure you fully comprehend the breakdown of what the contractor is aiming to charge so that you don’t come across any hidden costs. 

Other Casement Window Pricing Influences

When it comes to casement window installation, there are several external factors that can influence the project costs. These are costs associated with aspects other than the window itself or the installation costs. 

Arcitectural Restrictions on the Building

Some buildings have certain design and building restrictions in place to preserve the site’s history and in order to keep in line with health and safety design regulations. If casement windows have to be installed in a certain way or keep in line with a particular aesthetic, there may be additional costs involved. 

Location of Site

For projects in a remote location, contractors may charge additional labour costs or charge customers for their accommodation and transport. For more accessible site locations, however, it’s less likely to be a cost factor. 


Should I replace my old casement windows?

The decision to replace or repair your casement windows depends on the level of damage. If the glass is damaged, it will be cheaper to repair your casement windows than replace them. However, if the damage was inflicted on the frame, you may need to consider replacing them entirely. 

Do casement windows add value to my property? 

The more natural light a property has access to the greater the value. For this reason, tastefully installing casement windows can add value to a property. Typically, the larger the size of a casement window the more property value it will add. 

Are casement windows more expensive? 

Casement windows are actually one of the cheaper window styles you can choose, especially in comparison to bay windows and sash windows or other more grand designs. This is owing to their much more simplistic design. They are, however, highly adaptable making them more expensive the more you want to customise them. 

Which windows are cheaper than casement windows? 

Styles such as storm windows are usually cheaper than casement windows, coming in at around £150.00 per window, excluding installation, making them slightly cheaper than casement windows. 

Why are casement windows expensive? 

The expense surrounding casement windows usually revolves around the level of customisation you want to add to your casement windows. It also depends on the materials out of which your casement window is made. Casement windows with wooden frames tend to be on the more expensive side and the least cost effective owing to their proneness to wear and tear. The size and weight of casement windows also have a direct effect on their overall expense. 

Are wooden-framed casement windows worth it? 

Wooden framed casement windows are ideal for keeping in line with the aesthetic of older homes and are also super easy to customise. All it takes is a lick of paint with some outdoor product. However, you need to be prepared to maintain wooden-framed windows regularly, to avoid having to replace them more often than necessary. Wood is prone to more wear and tear than uPVC or aluminium, but it does look stunning when installed. 

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