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How Much Should You Pay for Casement Windows ?

Easy open windowsCasement windows are among the most popular window styles in the UK thanks to a combination of affordability and energy efficiency. If you’re looking for replacement windows that will pay off, casement frames are a good bet. However, you probably want to know how much they cost, what they offer for your home, and how you can get the best deal.

  • UPVC casement windows are the most popular window installation in the UK
  • Casement windows typically cost £300-£400 per frame for uPVC frames
  • Casement windows are available in a wide variety of materials and styles
  • A 6 window home will cost about £2,300 for uPVC casement frames

Casement windows make a good choice for most homes, but you should still know what you’re getting for your money. We’ve put together this complete guide to casement windows for UK homeowners to help you make the best decision for your home.

Cost of Casement Windows

Installing new windows means investing in your home and you are likely very concerned about window costs and installation costs. In most cases, you cannot get a 100% accurate quote online, because about 40-60% of the quote is for materials including the glazing and the frames and the 40-60% reflects the actual cost of installation, man-hours, and labor.

However, you can get a good idea of what your windows will cost based on average installation prices. We put this chart together based on average data from installations across the UK.

Casement window costs are affected by size and material.

Material   60 x 90   90 x 120   120 x 120  
UPVC   £250-570 £460-625 £625-895
Aluminium   £500-605 £655-735 £770 – 875
Timber £845 – £910 £1,245 – 1,300 £1,365 -1,405
Composite   £575-625 £600-650 £675-725


Lower end prices reflect budget windows with minimal add-ons while higher end prices reflect high-end options with better security features, soundproofing, coating, or other amenities.

Now that you know how much casement windows are likely to cost you, you’re probably wondering what they offer and if they are a good choice for your home.

Casement Windows Features

Casement windows feature hinges on the side with a securing casement stay attached to the frame. These windows open outward via a casement crank, secured by the stay to prevent them from swinging in the wind. In large openings, they are hung with the handles or opening together, so that they swing outwards and away from each other to create a single, large opening.

This window style has a number of pros and cons, which you should be aware of before you make the purchase.

Pros of Casement Windows

Casement windows are the most popular British window, thanks to a great number of positive features.

Ventilation – Casement windows offer more ventilation than any other window style.

Durability – The addition of the casement stay ensures that windows do not swing in the wind. This makes them more secure and less likely to shatter than old-fashioned windows without the casement stay.

Security – Casement frames support casement stays to prevent windows from being pried open, multiple point locking mechanisms, and secure sealing to prevent locks from being broken open. This ensures that they offer enough security to prevent someone from easily breaking the lock.

Energy Efficient – The only window that offers more energy efficiency to a home than a casement window is a sealed window. Why? Casement windows close so that their sealing directly meets the casement frame, providing optimum sealing to keep hot and cold air out. If your primary goal is to reduce your energy bills, casement windows are one of your best options.

Soundproofing – Casement windows are an excellent choice for soundproofing because they seal very well against the casement frame. The same mechanism that prevents airflow stops noise more than some other types of frames, which can be a huge plus in their favour if you live in a noisy area.

Easy to Clean – Casement windows are flat and easy to access to clean from both sides. While they may have any number of panes depending on the style, they are easy to simply wipe down to keep clean.

Affordable – Casement windows cost an average of 20-60% less than any other frame option in the UK. If you’re hoping to see a return from saving on your energy bill, this makes them the best option for most homes.

Cons of Casement Windows

Casement windows have cons as well and you should be aware of them before making a decision.

Exposure – Casement windows swing all the way open, letting dirt, dust, rain, and even bugs inside. If you’re concerned about what is coming into your home, casement windows may not be the best option for you. However, if you do want mosquito netting, casement windows are one of the best options.

Size Limitations – Casement windows feature a single frame that supports a large amount of glass. While this reduces costs, it does limit the size of the window. In most cases, you will have difficulty finding a casement window larger than 150 cm tall, however, some manufacturers design them up to 170cm tall.

Getting a Good Deal on Casement Windows

Casement windows are an affordable option that combine energy efficiency with ventilation and security. While not right for everyone, they make a good fit for most homes. If you’re hoping to save money with replacement windows, casement windows are an excellent choice. However, you should still take the time to do your research, shop around, and find a great deal on your frames.

  • Shop around and compare quotes from 3 or more installers
  • Know what you want and choose a material that works for you and your home.
  • Don’t accept same-day offers, they’re likely a scam even if they seem cheaper than the original offer.
  • Choose value and long-term quality over bare minimum cost. If your windows won’t last for 15+ years, they also won’t pay themselves off.

Getting replacement windows is an investment in your home, and casement windows have a lot to offer. If you’re ready to start comparing quotes to get the best deal, use our free service to get started. Just tell us what you’re looking for, we will request competitive quotes from top suppliers in your area, and we will forward you the top 3 to save you as much as 37.5% on your casement windows.


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