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Casement Windows

Casement windows from Anglian are secure, energy-efficient and affordable, so it's no surprise they're our best-selling style. Available in uPVC, wood, or aluminium, they're individually designed in the glazing, colour and configuration of your choice.

With top hung, side hung and French window options, explore the benefits of double glazing or A+ triple glazing, and see the full range of colours and glass options to make your casement windows bespoke down to the very last detail.

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  • White Wooden Casement Window Exterior In Open Position
    White wooden casement window exterior in open position
  • White uPVC Casement Window Interior in Open Position
    White uPVC casement window interior in open position
  • White Wooden Casement Window Close Up in Open Position
    White wooden casement window close up in open position
  • White uPVC Casement Window with White Back Door Exterior
    White uPVC casement window with white back door exterior
  • White uPVC Casement Window Interior in Kitchen Setting
    White uPVC casement window interior in kitchen setting
  • White Aluminum Casement Window Interior in Open Position
    White aluminium casement window interior in open position
  • White uPVC Casement Window Exterior in Open Position
    White uPVC casement window exterior in open position
  • White Aluminium Casement Window Interior
    White aluminium casement window interior

Casement windows are single or double-panelled windows, hinged from the side, top or bottom. Operated with a handle, panels open outward and close proud of their frame. They are our most popular window for their ease of use and availability in different styles.

Explore our Casement Window Materials

Reasons to Choose Casement Windows

  1. Save Money on your Heating Bills

    Casement windows are the most energy efficient window by design. Rated up to A+, they retain the heat better to keep you cosy on a winter’s day.

  2. Almost 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.

  3. 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.

  4. Secure Multi-point Locking

    Casement windows lock at multiple points along the frame for optimal security. Secure shoot-bolt locks, key locking handles and toughened glass keep you safe and secure.

  5. 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.

Working with the Best Industry Bodies to Install the Best Casement Windows

  • British Board of Agrement accreditation for uPVC windows from Anglian Home Improvements

    BBA Certificate for uPVC windows

    The British Board of Agreement provides independent accreditations for the construction industry. BBA-certified products are synonymous with quality. This accreditation covers our White Knight uPVC casement and tilt and turn windows.

  • BFRC logo


    The British Fenestration Rating Council (BFRC) verifies the energy performance of windows and doors in the UK. Installing BFRC rated energy-efficient windows will help save money on your energy bills.

  • bsienhancedsecurityofwindows2x

    BSI Kitemark

    The BSI Kitemark™ is one of the most recognised symbols of high quality products and safety standards. Anglian has 10 Kitemark accreditations, with six for windows alone.

  • BSEN12608 Windows and Doors accreditation


    British Standard BSEN12608:2003 Licence No KM 12876 - For colour fastness, impact resistance and corner strength uPVC frames.

  • FENSA logo


    The Fenestration Self-Assessment Scheme (FENSA) ensures replacement window and door installations comply with building regulations for England and Wales. You receive a FENSA certificate to keep as proof of compliance.

  • Glass and Glazing Federation logo


    Anglian is a leading member of the Glass and Glazing Federation (GGF). The GGF monitors the performance of member companies, ensuring the standard of products and their installation remains consistently high.

  • Made in Britain logo

    Made in Britain

    The ‘Made in Britain’ marque on all our products means they are made from start to finish in a British factory by British craftspeople.

  • Recovinyl Plus logo

    Recovinyl Plus

    Recovinyl is an initiative advancing the sustainable development of the European PVC industry by improving production processes, minimise emissions, develop recycling technology and boost the collection and recycling of waste.

  • TrustMark

    TrustMark is a not-for-profit organisation operating a quality mark framework in the repair, maintenance and improvement sector. Registration with Trustmark demonstrates commitment to customer service, high standards and continual improvement.

Compare Casement Window Energy Ratings

B rated
A rated
A+ rated
A++ rated
uPVC Casement
Wooden Casement
Aluminium Casement
U-Value of 1.4W/m²K

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10-year Guarantee

A 10-year parts and labour guarantee is included in your Anglian double glazing price.

Made in Britain

Made in Britain

Our products are made from start to finish in a British factory by skilled craftspeople.

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Price Match

If you find cheaper like for like uPVC windows elsewhere, we'll match the price.

See what New Windows look like on your 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.

*Based on GGF data for a typical detached house with gas central heating upgrading from double-glazed uPVC windows with a 12-14mm spacer bar, to Anglian A-rated double-glazed uPVC casement windows.
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.

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Our Accreditations and Licenses

  • British Board of Agrement accreditation for uPVC windows from Anglian Home Improvements
    The British Board of Agrement provides certification on the quality of our products.
  • BFRC logo
    The British Fenestration Ratings Council is the UK’s national system for rating energy efficient windows.
  • bsienhancedsecurityofwindows2x
  • BSEN12608 Windows and Doors accreditation
  • FENSA logo
    The Fenestration Self-Assessment Scheme ensures window installers comply with buildings regulations in England & Wales.
  • Glass and Glazing Federation logo
    Anglian is a leading member of the Glass and Glazing Federation (GGF).
  • Made in Britain logo
    Certifies products made from start to finish in a British factory by British craftspeople.
  • Recovinyl Plus logo
    PVC Industry initiative to improve manufacturing, minimise emissions and develop recycling practices
  • TrustMark is a government endorsed not-for-profit organisation that operates through more than 30 scheme operators.