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Double Glazed Windows

Choose your Everest Windows from these materials

Everest Windows offer these great benefits



Our new warmest ever windows offer an A+15 rating on double glazing and an A++ rating on triple glazing - the first ever windows to reach that standard - making them the ideal choice for energy efficiency.



The quality of our glass and innovation of our designs ensures that unwanted noise pollution is kept out, with outside noise reduced by as much as 35 decibels.

More secure

More secure

Our new GrabLock, developed with Yale, has three times the locking surface area of a standard, multi-point lock, making it our most innovative and secure lock ever for greater peace of mind.

Virtually maintenance free

Virtually maintenance free

Our products are designed with your busy lifestyle in mind, and many of our windows are virtually maintenance free.

Energy efficient

Energy efficient

Having energy efficient windows is about keeping the energy you’ve paid for in your home. All of our windows are designed for maximum energy efficiency.

Conservation area friendly

Conservation area friendly

Our range of Elite composite casement windows have been designed to ensure they are compliant with many conservation area regulations.

11 colour options - click a colour to see the difference

  • White
  • Light Grey
  • Olive Grey
  • Anthracite Grey
  • Chartwell Green
  • White Woodgrain
  • Cream Woodgrain
  • Natural Oak Woodgrain
  • Golden Oak Woodgrain
  • Rosewood Woodgrain
  • Black Woodgrain
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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

See how strong and secure our products really are

We stand proudly by the claim that we ‘Fit the Best’ and now we prove it with our toughest test yet. Watch how we tested the strength of our products using a 200lb punch bag and a set of Aluminium Bi-Fold doors.

Our toughest test yet >

The Everest Makeover

Watch how we give these old double glazing windows an Everest makeover to make this house warmer and more secure. With their internal glazing beads, multi-point locking mechanism and bi-directional locks you can see just how secure Everest windows make your home.


Our latest customer reviews


Q: How much do Everest windows cost?

All Everest windows are bespoke and made-to-measure specifically for your home, so we're unable to give you a price until we understand your full requirements. For more information on our prices click here.

Q: What guarantees do you offer as standard on windows?

All our windows are guaranteed for a minimum of 10 years with many offering a lifetime guarantee, depending which style you choose. Our window guarantees are also transferrable should you sell your property. For full details click here.

Q: What are double glazed windows and how do they work?

Double glazing is where two window panes are fitted securely into a frame. What’s important is the space between the window panes as this is where a layer of argon gas is inserted. As argon gas is denser than air, it stops cold air coming into your home and stops warm air seeping out, subsequently increasing energy efficiency. A good double glazing window will also offer sound and security benefits. 

Q: What are the benefits of triple glazed windows?

Triple glazing of course, means there are three panes of glass, making your home warmer, quieter, tougher and safer than ever before. The energy efficiency of Everest’s triple glazing is unprecedented with an A++ WER Rating giving homeowners ample opportunity to be green and save money. However, it is not just the glass itself that contributes to the overall performance of the window. It’s the larger frames, the additional layer of argon gas and the extra opportunity to add coatings that effect the functionally of each of the three panes of glass.

Q: Triple vs. double glazed windows - what's the best option?

Our double glazing has evolved continually over the years and is now at a level that satisfies the needs of almost every homeowner. Is triple glazing better? Yes, fitting new Everest Triple Glazing can improve your home’s energy efficiency. Everest Triple Glazing has been awarded A++, the highest possible energy rating and by keeping heat inside, you can save money on your energy bills too. To demonstrate how Everest Triple Glazed Windows compared to standard double glazing, we conducted a thermographic survey to put them to the test. For full details and to view the results click here.

Q: Are Everest windows made to measure?

Yes all our windows are bespoke and made-to-measure. And it's not just our windows, in fact, every product we install is made specifically for your home and your exact requirements.

Q: Are Everest windows soundproof?

Whilst it's not possible to achieve full soundproof windows, due to the technological advances of Everest windows, our double glazing reduces exterior noise by an impressive 35 decibels, with triple glazing reducing exterior noise by an incredible 37 decibels.

Q: How quickly can Everest install windows?

Typically we will complete installation within four to six weeks from the time of  your order. If timelines are a factor, one of our expert consultants will be able to give you a more accurate estimate at the time of your quotation.

Q: How easy are Everest Windows to maintain?

Everest uPVC and aluminium windows are virtually maintenance free and will look great with an occasional wipe down using warm soapy water. As timber is a natural product, it requires a little more looking after, but for added peace of mind we offer industry leading guarantees against issues such as warping and discolouration in the odd instance you encounter an issue. For more advice and useful information on how to maintain your windows click here.

Q: Do Everest provide window repair?

We are able to perform repairs, but only on our own products. The reason for this is working on windows installed by another provider will affect your warranty and also our experts will not be trained in the technology used by other companies products like they are our own.

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