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uPVC Windows

Introducing new GrabLock, designed exclusively with Yale

We're pleased to announce the launch of GrabLock, developed exclusively with leading lock manufacturer, Yale. GrabLock has three times the locking surface area of a standard, multi-point or shoot-bolt window lock, making it our most innovative and secure lock ever.

Find out more

Why choose Everest uPVC windows?

Our uPVC windows reflect the latest advances in window technology. Their superior quality is a signature of Everest products and with Everest uPVC Windows, you can enjoy the following benefits and options:

Unique to Everest

  • A+15 rated double glazing windows - the leading score among competitors, saving up to £450 a year on energy bills and keeping you warm
  • A++ rated triple glazing windows - so good that they changed the grading system, our warmest ever windows are 35% more effective than double glazing
  • Brighter white uPVC window frames, guaranteed not to discolour or fade for life
  • Optimum performance - 20mm gaps between window panes on double glazing, 12mm gaps on triple, ensuring the cold air stays out
  • Extra secure - New GrabLock, developed with Yale, has three times the locking surface area of a standard, multi-point window lock making it our most secure lock ever. Plus our windows have internal glazing beads for improved security, exceeding British Standards.
  • Made to measure for a perfect fit – unlike other suppliers, we have a much smaller tolerance for gaps and use a uPVC trim around the edge of the windows for a neater finish
  • New Smoothweld technology making the joints of your frames almost invisible
  • Installation speed – we install quality bespoke windows within 4-weeks of purchase
  • Guaranteed for life on double and triple glazing against fog or condensation between the panes of the sealed units of our casement and tilt turn options, with a further 10-year guarantee on materials and workmanship, as standard

And still there's more...

  • Up to 16 chambers (9 in window frame and 7 in sash) making your home warmer and more secure
  • Low E internal glass to reflect heat back into the room and minimise energy loss
  • Q-Lon seals improve weather resistance as the seals have no memory and therefore always return to their natural position
  • Low iron outer glass pane to improve window clarity
  • Traditional framing options giving you a choice of equal sightlines for a balanced look
  • Built to lastand easy to maintain - manufactured to the highest quality, so they won’t rot, rust, peel or flake, with an occasional wipe down using warm, soapy water keeping them at their best all year round
  • Easy clean hinges offering an optional extra to keep your uPVC frames looking great
  • Lead free and fully recyclable material, in-keeping with our “green living” ethos
  • Wide range of colours both single and two-colour options, allowing you to have a different colour on the inside and outside of your home
  • Ideal for traditional or conservation properties as the same style can be retained, if needed

Everest uPVC windows are...

Virtually maintenance free

Virtually maintenance free

uPVC is rigid and durable and will not rust, peel, flake or rot. It stays smooth in all weather conditions, so it looks and feels great all year round with only an occasional wipe with warm, soapy water.

Available in premium

Available in premium

Our premium uPVC option gives you the choice of two-colour options, making it easier to customise your frames. They incorporate our new smoothweld technology and traditional framing options. 

Best selling

Best selling

Our uPVC range is a firm favourite with our customers due to its reliability, style and convenience, making uPVC our best selling windows.

Find out more about our popular uPVC window options

Georgian bars

Georgian bars

Create a distinctive look by opting for Georgian bars, which can either sit between your glass panes for easy cleaning or externally for a touch of authenticity.

Triple glazing

Triple glazing

Enjoy extra comfort within your home with our new warmest ever triple glazing windows, boasting an unprecedented A++ energy efficiency rating.

Window framing

Window framing

Make a statement of tidiness to any visitors by ensuring your windows look balanced in their own right with traditional window framing. 



Opt for our new smoothweld technology to ensure near invisible joints in the corners of your windows, helping complement our beautiful window designs.


Our latest customer reviews


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

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

Q: Do uPVC windows look cheap?

A: 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.

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

A: 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.

Q: How convincing is wood effect finish on uPVC?

A: 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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