Casement Windows
Casement windows are one of the UK’s most popular window styles — known for their security, energy efficiency, and affordability. Available in uPVC, timber, or aluminium frames, each window is made-to-measure and fully customisable in glazing, colour, and configuration to suit your home.
With top-hung, side-hung, and French casement options available, you can choose the perfect design to maximise ventilation, natural light, and practicality. Our casement windows are available in both double and triple glazing options, allowing you to select the ideal balance of performance and budget.
What are Casement Windows?
Casement windows are single or multi-panel windows that are hinged at the side or top, allowing them to open outward with ease. Operated using a secure handle mechanism, the panels open smoothly and close neatly within the frame for a tight, weather-resistant seal. Their simple operation, versatility, and clean appearance make them one of the most popular window styles in the UK.
Highly adaptable in design, casement windows can be configured to suit almost any property style or opening size. Whether you prefer a single side-hung panel, multiple glazed sections with a central opener, or a top-hung design for added practicality, there’s a layout to match your needs. Top-hung casement windows are especially ideal for ventilation during wet weather, as they can remain slightly open while helping to keep rain out.
Available in both double and triple glazing options, our casement windows deliver excellent thermal performance, reduced outside noise, and enhanced security — making them a practical and energy-efficient choice for any home.
Casement Window Materials
With options for different materials and colours along with their excellent energy efficiency, casement windows can be an ideal choice for any type of property.
uPVC Casement
Aluminium Casement
Wooden Casement
Sash Window Details
Cottage Casement Windows
Cottage casement windows beautifully replicate the traditional style seen on British country homes for generations. Designed to capture that classic charm, they are ideal for cottages as well as period-style properties across the UK.
Featuring external glazing bars, they create the appearance of multiple panes, whether in timber or uPVC frames — giving you an authentic heritage look with modern performance.
Bay Casement Windows
Casement windows are a great way to refresh and modernise your bay windows while maintaining their classic appeal. They help improve insulation in what can often be a colder area of the home, especially when upgraded to triple glazing for enhanced heat retention.
You can also restore original features, such as toplight decorative glass, to preserve the character of your property while benefiting from modern performance.
Victorian Casement Windows
Upgrade your Victorian windows with modern, energy-efficient casement designs that retain their original charm. Perfect for period properties, these windows are crafted to replicate the classic look while delivering improved insulation and performance.
Recreate the traditional Victorian sash style with a central glazing bar, two-pane configuration, and optional coloured or decorative glass — combining heritage aesthetics with modern living.
Easy to Operate
Single-lever latches make it easy to open and close casement windows smoothly. Open your casement windows with a glide by lifting the handle and pushing the window outwards.
Excellent Ventilation
Trickle vents allow fresh air to enter your home, and they reduce condensation and damp. In line with building regulations, they are standard on all our windows.
Endless Customisation
Customise your casement windows to create a unique look you can be proud of. Choose from three materials, and a huge range of styles, finishes and colours.
Discover Our Energy-Efficient Casement Windows
Upgrade your home with expertly crafted casement windows, available in both double and triple glazing options for enhanced comfort, security, and long-term energy efficiency. Designed to deliver reliable performance and everyday practicality, our casement windows help reduce heat loss, minimise outside noise, and improve overall thermal insulation throughout your home.
Perfect for both modern and traditional properties, casement windows offer excellent ventilation and a clean, versatile design that suits almost any style of home.
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Your Questions Answered by us
Are casement windows secure?
Casement windows are one of the most popular types of windows for residential properties due to their security features. They are fitted with multi-point locking systems that engage with several points around the window frame, making it difficult for an intruder to force the window open. Many casement windows are reinforced with steel or aluminium for added strength and durability. Choosing an experienced window installation company that meets all relevant safety and security standards should be an important part of your decision-making process.
How do casement windows open?
Casement windows open outwards on hinges that open from the top or sides and are operated with a handle. When opened, casement windows can provide good ventilation and allow for easy cleaning of the exterior of the window from inside the home. If you’re having trouble opening your windows, we can help you diagnose the issue and whether you might need to replace them.
How long do casement windows last?
With proper care and maintenance, a well-made casement window made from materials such as uPVC or aluminium can last up to 20 years or more. Anglian White Knight uPVC casement windows hold the BBA accreditation, which means they can last more than 35 years with regular care.
How much do casement windows cost?
The cost of casement windows varies depending on whether you choose uPVC, wood or aluminium. White uPVC usually has the best price, followed by aluminium and then wood. Replacing your windows with Anglian A-rated double-glazed casement windows could save you up to £184.25 a year* when you upgrade from pre-2002 double-glazed uPVC windows.
What is a double casement window?
A double casement window features two panels of glazing that open outwards from a central pillar (known as a mullion). This provides a large area of glass for lots of natural light, and easy operation when you want more ventilation and fresh air.
What is the difference between casement and sash windows?
The key difference between casement and sash windows is the way they open. While casement windows open outward on a vertical hinge, sash windows slide on tracks within the frame. This can make them a better choice in rooms where outward-opening windows are not practical, such as in rooms with limited space or where the window would encroach on a walkway or outdoor space.