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uPVC Casement Windows

uPVC Casement Windows

  • Highly energy efficient
  • Choice of double or triple glazing
  • Security exceeds British Standards
  • Range of colours & woodgrain finishes
  • Lifetime guarantee
A white uPVC casement window viewed from the outside

Why choose uPVC Casement Windows?

uPVC Casement Windows are virtually maintenance free, and will never peel, flake, fade, rust or rot. Our uPVC windows are made-to-measure and expertly installed for a millimetre tight fit, giving you a strong, secure and energy-efficient window.

Explore 12 different coloured uPVC windows

Available in single or two tone options, with a different colour on the inside and outside of your home.

  • Grey Cedar
  • White
  • White Woodgrain
  • Cream Woodgrain
  • Light Grey
  • Olive Grey
  • Chartwell Green
  • Natural Oak
  • Golden Oak
  • Rosewood
  • Anthracite Grey
  • Black Woodgrain
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A range of options to choose from

Double and triple glazing

Double or Triple Glazing

Our uPVC casement windows are available with either A+15 rated double glazing or industry leading A++21 triple glazing, and include internal low-e glass that reflects heat back into your room, to keep your home warmer and help reduce your energy bills.

Window furniture

Window Furniture

A wide range of handles are available to match the style of your home. Our standard handles come in black, gold, silver, chrome or white, whilst the premium 'Monkey Tail' and 'Tear Drop' handle ranges are available in black, gold, graphite and chrome.

Georgian bars

Georgian Bars

Georgian bars are a popular addition and a classic choice for conservation areas. They can either be internal bars between the glass panes for easy cleaning, or external bars on the outside. We believe it's all in the detail so we also add a white gasket to the Georgian bars that blends invisibly into the bar itself.

Smoothweld technology


Our uPVC casement windows have the option of our Smoothweld technology, which gives you an almost invisible corner joint, with clean, seam-free lines, no deep grooves that might harbour dirt and a beautiful, flawless aesthetic.

Window framing

Window Framing

We offer 2 types of window framing - traditional and contemporary. Traditional makes your frames match on both sides, giving it a symmetrical design, and contemporary allows the glass panes and window openings to vary in size.

Window glass options


It doesn't stop at double or triple glazing - there's also a range of glazing types to suit your needs. Everything from obscure glass, which is perfect for bathrooms and offices, to decorative glass with a range of coloured, leaded and bevelled designs.

uPVC Casement Windows offer many great benefits

Energy efficient windows

More energy efficient

Our uPVC Windows are A+ rated as standard and made-to-measure to keep your home warmer and help reduce your energy bills. We use a multi-chamber profile, meaning more barriers to prevent heat escaping and low-e internal glass, which reflects heat back into the room. The gap between the panes is filled with Argon gas and the separating spacers are coated in a low conduction material to hold in more heat. Our windows also have double weather-resistant Q-lon seals which keep a weather tight seal to keep out rain and draughts.

Keep your home safe & secure

Fitted with new GrabLock, our most secure lock ever, you can be reassured your home is offered the highest level of protection. GrabLock has been developed exclusively with leading lock experts, Yale and has three times the locking surface area of a standard window lock. GrabLock has been rigorously tested for strength and security, exceeding PAS24 British Standards.

Safe and secure
Reduce unwanted noise

Reduce unwanted noise

Not only do our uPVC windows keep your home warmer and more secure, but replacing standard glazing with Everest uPVC Casement Windows ensures that unwanted noise pollution is kept out - in fact, outside noise can be reduced by as much as 35 decibels when you choose triple glazed windows, which is particularly useful if you live in a noisy area.

Guaranteed for peace of mind


Our uPVC casement windows carry a lifetime guarantee on the sealed unit against fog, condensation and discolouration. We also guarantee the workings of the window for 10 years.

What are the technical specifications of uPVC casement windows?

Everest uPVC casement window
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    1. Glazing
    • Double glazed as standard (A+15)
    • Triple glazed available (A++21)
    • 20mm Argon filled gap between panes for increased insulation
    • Low E glass reflects heat back into your room
    • Thermally toughened safety glass fitted as standard
  • +
    2. Locking mechanism
    • New GrabLock exclusive to Everest
    • Rotating aluminium cylinder "grabs" keeps on the window frame
    • Over 3 times the locking surface area of standard mulit-point locks
    • Off-set handle with key operated deadlock
    • Lockable night vent position
    • Exceeds PAS24 security tests
  • +
    3. Weather resistant seals
    • Outer Q-lon weather resistant seals
    • Inner weatherproof seal keeps out draughts
    • Optional trickle ventilation in the frame
    • Weather drip on frame directs rain away
  • +
    4. Internal glazing bead
    • Helps prevent glass being removed from outside
  • +
    5. Window profile
    • 5 chambers in frame & 4 in sash
    • Thermal insert in sash improves insulation
    • Galvanised steel in frame adds to rigidity and security
  • +
    6. Window opening
    • Stainless steel friction hinge holds firm against wind
    • Egress hinge fitted as standard

uPVC casement FAQs

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    Q. Will the finish on uPVC windows degrade over time?

    We guarantee that our uPVC windows won’t rot, rust, peel or flake and we also offer industry leading guarantees on many other aspects of the window for added peace of mind.

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    Q. Do uPVC windows look cheap?

    They look smooth and clean and depending on the surrounding materials of the home can actually look quite stunning. We don’t believe the windows would be so popular if people did find them cheap and so we’re not surprised they continue to be a best seller.

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    Q. Is the supply and installation of uPVC windows quicker due to their popularity?

    Every single job is different from start to finish, meaning they each have their own challenges and demands. Everest does not operate with a factory-line mentality and so never hurry the installation process. As all of our products are made-to-measure for a perfect fit, the timing of the process is ordinarily the same.

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    Q. How convincing is wood effect finish on uPVC?

    We are proud to say that it really does look like natural timber, but it comes with all of the modern benefits of a uPVC window, so it is finally possible to get a window that offers traditional looks with the convenience of a modern product.

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    Q. How can I keep my uPVC casement windows clean?

    We recommend you clean your uPVC windows at least twice annually, or more if you live in a coastal or city area. To clean the window frames use warm soapy water, do not use glass cleaners, kitchen or bathroom cleaners on the frames as these can damage them. To remove tough stains use washing up liquid with little or not water and then rinse with water. For tough stains you may have to use a uPVC window cleaner. However, tough the stains never use cleaning agents, caustic or ammonia-based cleaning agents, scouring powder or other abrasive cleaners and steel wool or scouring pads. Washing your uPVC windows twice a year with soapy water should keep your windows looking good and tough stains away.

Everest's latest customer window reviews

5 star review for garage doors
We were delighted with our new windows and doors. The fitters were friendly and efficient. Cleaned up very well. Can’t fault anything. Catherine Everett 25/7/18

Windows advice and inspiration

Read our expert advice from inspiring ideas and useful information to maintenance and tips for caring for your windows.

View the Everest Blog

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