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Why get double glazing?

  • Save up to £195 per year on energy bills
  • Improve your property's value
  • Reduce outside noise

Everest Windows Review 2024

Everest has been supplying windows for over 50 years

The company is rated ‘excellent’ on Trustpilot

All of Everest’s products are made in Britain

Getting a new set of windows costs a lot, and is never an easy task. You have to work out what your budget is, get to grips with the different styles, and choose between paying the costs for double glazing and triple glazing. Above all, you want to find a supplier that you can trust.

Enter, Everest, one of the largest  and most trustworthy double glazing companies in the UK.

With an excellent reputation and tons of options for customers to choose from, Everest can provide you with the perfect set of windows for your home – but what exactly do they have to offer? Let’s take a look.

Alternatively, you can skip the reading and get yourself some new windows by filling in this short form. Once we receive your information, we’ll pass it on to our trusted suppliers, who’ll get in touch with free bespoke quotes.

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What’s on this page?

Who is Everest?

Everest is a double glazing and home improvement company, based in the UK.

Originally founded back in 1965 as ‘Home Insulation Ltd’, Everest’s initial purpose was to produce aluminium secondary glazing for post-war homes with no insulation.

Fast forward to today, and the company is one of the largest double glazing manufacturers in the UK, also supplying a range of other home-improvement products, such as doors, conservatories, rooflines, and driveways.

We’ve written an article on double glazing costs if you’re keen to learn about what you’d spend on double glazing in general.

What products does Everest sell?


Everest has been producing windows for over 50 years – starting off with exclusively aluminium secondary glazing, and expanding to include a wide range of window products.

To make sure customers can get the perfect set of windows, Everest offers a number of bespoke styles, frames, and features to choose from.


Everest supplies uPVC, wood, and aluminium window frames, which all come with their own set of benefits. For example, although wood is the most eco-friendly and traditionally aesthetic option, it’s usually more expensive than uPVC.

Customers can also choose from over 20 different colours for their windows, including wood grain finishes on uPVC, which make the frames look like real timber. This is a great option for anyone wanting the aesthetics of wooden windows, but can’t quite afford to splash out on them.


Safety is a key concern when buying new home improvements, which is why all of Everest’s windows are fitted with multi-point locking.

If the customer wants to go an extra step further, they can upgrade to a GrabLock, which has three times the locking surface area of a standard multi-point window lock.


When it comes to the window panes themselves, customers can choose from double, triple, or secondary glazing, which all lock in much-needed warmth, keep unwanted noise out, and add an extra layer of security to the house.

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When it comes to doors, Everest has a style for every type of property. The company’s door range offers a number of different materials to choose from, including composite, uPVC, timber, and aluminium.

Customers can also choose from over 40 door colours, including woodgrain finishes on uPVC.


Of course, one of the main features people will be looking for in a door is security, which is why Everest fits all of its doors with multi-point locking. Customers can also upgrade to a SmartLock, which adds an extra layer of security.


Customers can also personalise their doors by adding a range of features, including decorative, leaded, and obscure glass windows.


Conservatories are a very popular choice for homeowners wanting some extra space, but it can be pretty long-winded getting them installed – that’s why Everest’s specialist planning department comes in handy.

The team takes drawings created by the technical team and works with the customer’s local planning authority to sort out all the building regulations.

There’s also a range of conservatory styles to choose from – from modern lean-to conservatories to historic Victorian designs.

Customers can also benefit from “market-leading” guarantees on Everest’s conservatories, with cover against fog and condensation between the panes for up to 20 years.

Sealing a double glazed window

What are the benefits of using Everest?

It’s a trustworthy company 

Not only is Everest one of the largest window suppliers in the UK, but it also receives a lot of great feedback. Everest has garnered over 12,000 reviews on Trustpilot, with the overall score ranking it as ‘excellent’.

Need more reasons to trust Everest? Just take a look at some of its accreditations. It’s backed up by:

  • Made in Britain – An initiative that was set up to highlight the importance of manufacturing products in Britain
  • The Fenestration Self Assessment Scheme (FENSA) – A government scheme that makes sure replacement windows and doors are compliant with building regulations
  • Trustmark – The only government-endorsed scheme for trades in and around the home, encouraging work to the highest standards and building consumer trust
  • British Fenestration Rating Council (BFRC) – The BFRC is the UK’s national system for rating energy-efficient windows and doors

Local installers 

Everest consultants work all across the UK, so customers can rest assured that they’re never far away from an installer. Not only does this mean a faster service, but the experts will also have extensive knowledge of the local area.

Affordable products

Everest offers a Seven-Day Price Promise, which guarantees customers won’t pay less for the same product from another company. If a customer does manage to find the same product cheaper from another company within seven days of purchase, Everest will match the competitor’s price.

Finance options

Home improvements can be pretty pricey, no matter which company you go for. To combat this barrier, Everest has partnered with Kandoo – a regulated credit broker and comparison service that helps customers find the best Personal Loan or Secured Lending option.

Different warranty options

Everest customers can have complete peace of mind that their home improvements are built to last thanks to the company’s warranty options.

Depending on the product, customers can get:

  • 10-year guarantee – This is Everest’s standard cover for all the parts and materials in its products (with some small exceptions). The cover includes issues that occur as a result of faulty workmanship or installation and lasts for up to 10 years. Although it doesn’t cover accidental breakage, it does cover condensation and fogging between the panes in windows and doors
  • 20-year guarantee – This cover is offered on all products in Everest’s uPVC Exclusives windows and doors range, free of charge. It includes protection against condensation and fogging between the panes in double and triple glazing windows, as well as the discolouration of white uPVC
  • Everest lifetime guarantee – This is Everest’s premium guarantee, offering lifetime cover for condensation and fogging between the panes on uPVC Exclusives windows in double and triple range.

Products are made in Britain

Everest is dedicated to UK manufacturing, and has been since its post-war inception.

Although the company originally started in Waltham Abbe0, the Everest factory is now based in Treherbert, Wales.

What are the benefits of manufacturing in the UK? Well, it’s easier to track the production process and takes less time for products to get to customers, since they don’t need to be shipped from across the world to reach them. This also makes the products more eco-friendly than ones produced abroad.

Ready to get yourself a set of new windows? You can speed up this process by filling in this short form. Once we receive your information, we’ll pass it on to our trusted suppliers, who’ll get in touch with free bespoke quotes.

Written by:
Beth has been writing about green tech, the environment, and climate change for over three years now – with her work being featured in publications such as The BBC, Forbes, The Express, Greenpeace, and in multiple academic journals. Whether you're after a new set of solar panels, energy-saving tips, or advice on how to reduce your carbon footprint, she's got you covered.
Reviewed by:
Tamara Birch, senior writer, The Eco Experts
Tamara has written about environmental topics for more than four years. This includes advising small business owners on cost-effective ways, like solar panels and energy-efficient products to help them become more sustainable. 
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