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Everest windows review: What does this famous brand offer homeowners?

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Deciding to install new windows can be a daunting task. You have to consider your budget, choose from a diverse variety of window styles and figure out what type of window glazing you need. But what’s even more important is looking for a reputed and trustworthy supplier. This is exactly where Everest comes into play. It’s among the biggest double glazing companies in the UK.

A highly reputed company, Everest has a slew of excellent window options that are manufactured in line with the customer’s requirements. In light of this, we’ve put together an in-depth Everest windows review to help you make an informed buying decision.

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A brief overview of Everest

Established in 1965, Everest is a UK-based home improvement and window company. It initially started as an insulation company, offering quality aluminium insulation services for post-war residential and commercial establishments.

Today, the company has significantly expanded into one of the UK’s largest window companies, along with offering an incredible variety of home improvement products and services such as rooflines, doors and driveways.

Everest product line up


The company has been manufacturing high-quality double-glazed and triple-glazed windows for more than five decades. Initially, Everest only manufactured aluminium windows, but today, it offers a variety of bespoke options. In addition, the company also provides a plethora of modern styles and frame designs for customers to choose from.

everest casement windows in a lounge
The classic casement window design (Everest)

Window frames

Everest manufactures a wide range of window frame designs with a slew of durable materials, such as wood, aluminium and uPVC, all of which come with unique advantages. For instance, while wood frames are a classier and more sustainable option, they typically cost more than other materials.

You also have the option to select from a range of colours (up to 20), customising your windows in line with your interior décor. Everest also offers quality wood grain textures and finishes on uPVC window frames if you want a more budget-friendly option and wood-style aesthetics.

Furniture fixtures and accessories

One of the primary factors to consider when investing in home improvement products is safety. This is exactly why Everest windows come with a dual-point locking mechanism. However, what’s more interesting is that the company also offers an additional window security feature you can opt for known as GrabLock, which offers additional locking space on the window.

everest glazing manufacture in workshop man using glue gun
Everest offers a number of glazing types, from double and triple glazing to noise-reducing and security glass (Everest)

Window glazing

Everest provides different glazing options for windowpanes. For instance, you can choose from double, secondary or triple glazing. Each type of glazing comes with different energy efficiencies and other features, such as noise-proofing, security and heat-loss prevention. 

Doors and door materials

Everest also supplies a wide variety of doors and styles for all types of residential and commercial properties, including bifold doors. Plus, the company manufactures doors in different materials, such as uPVC, aluminium and timber. In addition, you can select from 40-plus colours and have your doors custom-made with woodgrain finishes.

everest-conservatory doors open with a dining table and chairs and sofa
One of Everest’s light and spacious conservatory designs (Everest)


Everest also builds conservatories for residential customers looking to add more space to their homes. While the installation can be complex, the company has an excellent planning department.

Everest windows pros and cons

Like any Everest double glazing reviews you read, you’ll have to weigh the pros and cons, and Everest is no different despite being an acclaimed and reputed company. In light of this, let’s take a look at some factors you should keep in mind.


High-quality energy efficiency: A wide variety of Everest double-glazed windows are rated A or A+ for excellent energy efficiency. However, its timber and aluminium window frames and styles are rated B. Its highest-rated products (A++) are triple-glazed windows. 

everest triple glazing diagram
Everest’s triple glazing is its top-grade glazing, offering superior insulation (Everest)

Attractive warranties: Everest double-glazed windows come with a typical 10-year warranty. The warranty covers the windows, materials and parts. In addition, Everest offers a 20-plus-year warranty on its premium uPVC windows. For an extra charge, you can also get a lifetime guarantee for condensation and fogging between panes. 

Variety of window styles: Everest offers a diverse variety of window materials, parts, colours and styles. This means you can go with a design and style that suits your interior design. 

Noise dampening: Everest offers noise-reduction windows, which are made with thicker glass and materials. These windows are ideal if you live in a noisy area. Noise-reduction windows are manufactured using dual windows with varying thickness levels. In addition, these windows are built-in with a PVB laminate core for maximum sound dampening.

Security: Everest double-glazed windows are renowned for their security features, such as the popular GrabLock mechanism. The company’s safety window systems are SBD-accredited. 

Bespoke products: Everest also supplies a slew of quality home improvement products, such as doors, handles and other types of furniture items. Plus, you can have Everest customise your windows, incorporating features such as noise reduction, obscure glass designs and aesthetic designs.

Competitive prices: Everest supplies made-to-order windows, so there are no fixed windows prices, and you won’t be able to find prices online. However, once Everest professionals provide you with a quote, you’ll be given a comprehensive view of all the costs involved.


Additional materials are expensive: As per Everest reviews, adding more features or extra materials can be costly.

Not accredited by the Energy Saving Trust: Unlike a handful of its competitors, Everest doesn’t have an Energy Saving Trust endorsement. However, the company is endorsed by the British Standards Institute (BSI) and is also a Glass and Glazing Federation (GGF) member. 

Difficult to reach: Many Everest customers have reported difficulties getting in touch with the company’s aftercare department, citing scheduling and cancellation issues.

Not a lot of financing options: Everest only offers one type of financing option: secured lending through an affiliate lender called Tandem Bank, with a 12.9 per cent representative APR over a term of 60, 120 or 180 months. Some of the company’s competitors offer interest-free payment plans to spread the cost over one or two years. 

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Everest window types

Everest supplies a robust variety of double-glazed windows, such as:

uPVC windows

Everest windows manufactured with uPVC can be an ideal choice for homeowners, as it’s a durable and budget-friendly material. Plus, it’s energy efficient. Moreover, Everest supplies a wide variety of window types in this material, such as:

You can even have your uPVC wood stained for a premium look, as it can be a more inexpensive option compared to real wood.

Timber windows

Timber windows can be an ideal choice if you’re going for a classier look for your living space. While Everest supplies a range of different window styles and colours in timber, keep in mind that this material is going to be more costly than other options. The types of windows you can order in this material include:

  • Casement windows
  • Sliding sash windows

Plus, Everest timber windows feature excellent energy efficiency features and are manufactured with eco-friendly processes.

Aluminium windows

Everest’s double-glazed aluminium windows are another popular choice thanks to their durability and aesthetic design. Its aluminium windows are built for streamlined energy efficiency and are available in a variety of finishes. You can order aluminium windows in the following window types:

  • Casement windows

Everest energy efficiency

Most of Everest’s double-glazed windows are rated A or A+ for energy efficiency by the British Fenestration Rating Council (BFRC), though this drops to B for aluminium windows. Meanwhile, triple-glazed windows come with an A++ rating.

Everest window installation

We’ve listed some important things to consider when getting quotes and having Everest windows installed.

Make sure you know what you want

As Everest double-glazed windows are made to fit, it’s important to first have a precise idea of the type of window you want, the energy efficiency you seek and the security features you’re looking for. Clearly communicate your needs with the company’s design consultant before asking them to schedule a visit to your home.

Understand your quote

After your order details are communicated, Everest will share a complete cost breakdown with you. Go over the breakdown and check whether everything is on par with what you want. You can attempt to negotiate the price as well thanks to the company’s seven-day price guarantee. This means if you find another brand offering the same product at a lower price within seven days after putting in your order, Everest will reduce the price to match that brand.

Schedule a technical visit by an Everest professional

Before your order goes to manufacturing, an Everest technical worker will visit your home to take measurements. They’ll also discuss how they’re going to install the windows and if there will be any potential issues. So, have the professional accurately measure everything, and discuss any issues before giving them the go-ahead to avoid paying more for additional services.

Be aware of regulatory issues

The Everest team will guide you if there are any regulatory or permit issues you’re unaware of.

Manufacturing process

After the technical and installation plans are finalised and approved by you, the company will begin manufacturing the windows.

Installation process

After the Everest windows are manufactured, the company will schedule an installation appointment. After they install the windows, they’ll provide you with a FENSA certificate, a guarantee and warranty pack, and details of their aftercare options. 

Everest pricing and costs

You won’t find Everest prices online apart from average price points based on individual surveys. The company says this is primarily because each quote it provides is bespoke. In addition, the costs of installation will vary depending on the types of windows you’ve ordered. 

While you can say this is a good thing, as the cost of installation and materials will depend on your unique requirements and a home survey, it is equally important to keep in mind that Everest is in no way a budget brand. It focuses on offering attractive warranties, guarantees and quality materials rather than minimising installation costs.

In light of this, we’ve included a price table of Everest double-glazed casement windows, which are primarily based on existing quotes and projects. Keep in mind that these are averages rather than actual prices, and you may have to pay more or less based on the type of product you order.

Material Cost
Wood grain finishing £845-£1,250
Aluminium £500-£605
uPVC £350-£570
Composite £575-£625

In all, the final price of Everest double-glazed windows will depend on the following factors:

Multiple storeys: It will cost more to have windows replaced in a multi-storey home compared to an average, single-storey home. 

Window frame: The type of window frames you choose will also affect the price. For example, a sash frame will cost more than a couple of casement window frames combined. Also, each frame will come with its own set of advantages and disadvantages.

Technical specifications: Installation costs will be more or less depending on the amount of extra work that needs to be done to adequately install the windows.

Glass types: Everest supplies multiple types of glass, and each product will impact the final price.

How Everest compares to the competition

Everest’s windows are custom designed in line with your unique specifications, which means you’re going to get a precise fit. In addition, Everest offers a slew of durable materials, a range of colours and a variety of window styles. Not to mention, it supplies an unparalleled number of glass varieties. For instance, you can order windows with a robust number of features, such as noise reduction, triple glazing, tempered glass for more durability and energy efficiency and cutting-edge safety window locks. 

Moreover, Everest manufactures aesthetic glass designs, ranging from textured and acid-etched to enhanced visibility window glass options. Unlike other prominent competitors, Everest offers you the opportunity to blend different styles and colours. And you can do that for each individual window, as well as the interior of the window. For example, you can have the glass obscure on one side and clear on the other.

Plus, no other brand offers warranties as attractive as Everest. While most companies offer a 10-year warranty on their products, Everest offers 10 years as standard across all products, 20 years on its uPVC Exclusives range of windows and doors, and – for an extra charge – a lifetime guarantee for condensation and fogging in double and triple glazing products. 

An overview of how you can maintain Everest double-glazed windows

While Everest adamantly states that its windows don’t require any significant maintenance, it’s still important to understand that maintenance will depend on the type of window you have installed. For example, if you’re getting double-glazed windows, it’s recommended to have them properly cleaned every one to two years to get rid of any potential staining or weather-related dirt. 

For aluminium or uPVC windows, you can clean them using a washing cloth and soft glass-cleaning detergent. However, wood-framed windows will require some hefty and careful maintenance. Inspect them for any chipping, staining or scratches once or twice a year. If you find stains, it’s wise to have the wooden frame recoated. Consult Everest before performing any repairs, as it may void your warranty.

Bottom line

When it comes to sheer quality and service, specifically when it comes to windows, Everest is a good company to consider. The company designs made-to-fit windows and offers a robust variety of styles, colours, frames and materials. In addition, Everest offers excellent window safety features, furniture accessories and glass types. Plus, it offers customisations based on your style requirements and specifications, manufacturing double-glazed windows that match your interior décor.

Moreover, Everest offers excellent warranties, unmatched by any of its competitors. While other brands offer considerably shorter guarantees and warranties, Everest goes above and beyond customer expectations.

How we research and write about windows

data points measured
categories considered
windows reviewed to date
hours testing and analysing windows
customer reviews read

To ensure our window reviews are as exhaustive as possible, we thoroughly examine and evaluate 34 distinct criteria. Each window’s cumulative performance across these data points forms its final rating, influencing our ultimate recommendation.

Some of the most important features we consider when reviewing windows include:

  • Energy efficiency and performance
  • Features and security considerations
  • Durability and build quality
  • Available styles, designs and materials
  • Installation process
  • Manufacturer’s reputation
  • Price
  • Guarantees
  • Customer reviews

Each criterion is categorised into one of the following sections:

  • Performance and features
  • Supplier’s/manufacturer’s reputation and credibility
  • Customer experience
  • Environmental impact
  • Price

All of our windows articles are verified by our in-house team of fact-checkers to ensure our content is as accurate and up to date as possible. To find out more, read our article on how we cover windows.

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This calculator works using pricing data sourced directly from UK windows manufacturers. Prices are subject to fluctuations, however, so please use the results as a guide and contact suppliers for an exact price for your property.

Shameel Kazi


Shameel is a writer renowned for his dual expertise in VPN and online security matters, coupled with a deep understanding of cryptocurrencies and blockchain technology.

With years of experience as a VPN and security writer, Shameel’s work delves into the world of Virtual Private Networks, guiding readers towards enhanced digital protection.

Beyond cybersecurity, Shameel boasts proficiency in cryptocurrencies and blockchain technology. His insights into the decentralised realm offer readers a nuanced perspective on the potential and challenges of this transformative technology. Whether discussing the intricacies of blockchain security or the implications of digital currencies, his writings encapsulate both depth and clarity.

Through articles, guides, and expert analyses, Shameel’s blend of knowledge bridges the gap between digital security and blockchain innovation, making him a go-to source for those seeking an understanding of the digital landscape.

Amy Reeves


Amy is a seasoned writer and editor with a special interest in home design, sustainable technology and green building methods.

She has interviewed hundreds of self-builders, extenders and renovators about their journeys towards individual, well-considered homes, as well as architects and industry experts during her five years working as Assistant Editor at Homebuilding & Renovating, part of Future plc.

Amy’s work covers topics ranging from home, interior and garden design to DIY step-by-steps, planning permission and build costs, and has been published in Period Living, Real Homes, and 25 Beautiful Homes, Homes and Gardens.

Now an Editor at the Independent Advisor, Amy manages homes-related content for the site, including solar panels, combi boilers, and windows.

Her passion for saving tired and inefficient homes also extends to her own life; Amy completed a renovation of a mid-century house in 2022 and is about to embark on an energy-efficient overhaul of a 1800s cottage in Somerset.