Installing double glazing windows is one way to improve your home’s energy efficiency. Whether you’re installing new double glazing or replacing old windows, there’s a lot to consider. This doesn’t need to be overwhelming if you find a reputable double glazing installer that is trustworthy and reliable.
Everest has over 50 years of experience, and its footprint covers England, Scotland and Wales. Its double glazing windows come in various styles and feature a diverse range of colours, finishes and window types. The company also offers a decent product warranty and a high energy-efficiency rating.
We’ve researched Everest’s double glazing products, considering window costs, styles, and warranties.
Everest advantages and disadvantages
Our researchers took a deep dive into Everest, examining its product offerings, including product warranties, installation and pricing. We found there to be a number of pros and cons, like there are with most windows providers.
How does Everest compare to the competition?
Everest is an industry leader and operates nationwide, offering a wide range of bespoke products. Though compared to its competitors Everest’s prices are more expensive, its custom-made double glazing windows are something that sets it apart from other window providers.
Everest’s double glazing windows are custom designed, removing any concern that its products won’t be the right specifications for your home. Everest offers three frame materials – uPVC, aluminium and timber. Our researchers found it offers more than most other providers, such as Safestyle, which only offers uPVC, and Britelite and Britannia, which offer uPVC and aluminium.
We found its price range to be more expensive than its competitors. Companies such as Anglian still offer all three frame types, but their windows are more affordably priced. Both Everest and Anglian offer 10-year guarantees for double glazing windows, but Everest’s uPVC range has the added bonus of a 20-year fog and condensation guarantee.
| Double glazing company | Available energy ratings | Price range per window | Warranty | Window frame material | Trustpilot rating |
|---|---|---|---|---|---|
| Everest | A+ for uPVC windows | £500–£3,200 | 10-year, 20-year or lifetime (for a fee) transferable guarantees | uPVC, aluminium, wood | 4.4 stars |
| Safestyle | A | £250–£1,050 | 15-year standard guarantee | uPVC | 4.1 stars |
| Anglian | A or A+ for double glazing uPVC; A++ for triple glazing | £250–£910 | 10-year guarantee for all parts and labour, 10 – 15 years for gas-filled windows | uPVC, aluminium, wood | 3.9 stars |
| Britelite | A | £160–£625 | 10-year guarantee | uPVC, aluminium | 4.1 stars |
How much do Everest windows cost?
Everest’s pricing is not widely available on its website. The company’s double glazing windows are made to order, and factors such as house size, style and type of window will affect the overall price. Another factor that will affect the cost of double glazing windows is the cost of installation.
However, our researchers did find that, according to price comparison websites, you can expect to pay the following.
| Material | Cost per window |
|---|---|
| Wood grain finishing | £845-£1,250 |
| Aluminium | £500-£605 |
| uPVC | £350-£570 |
| Composite | £575-£625 |
Though Everest’s pricing is not easy to source, our researchers did discover that Everest is by no means the cheapest windows provider. For those on a budget, this could be something to consider when comparing companies.
The following factors could affect the price of Everest windows:
- Frame material and window style: Your frame choice will have a bearing on the overall cost, with uPVC being the most affordable and timber costing the most. Similarly, the style of window you choose, such as casement or sash, will affect the cost too
- Number of windows: The more windows you require, the higher your overall cost will be. Similarly, the bigger your house is, the more windows you’ll need
- Glass type: Everest has a selection of different glass types available that tackle things such as solar gain and noise pollution. Specialised glass is likely to increase your double glazing cost
- Installation cost: The cost for installation will vary depending on your specific requirements and the cost could rise if extra work needs to be carried out
What types of windows does Everest manufacture?
Everest has a diverse product range, which includes different types and styles of windows to choose from. Everest offers three different window frame materials – uPVC, aluminium and timber. All of these can be customised by adding different types of glass and handles, and you’ll have the option to choose a colour that matches your home’s aesthetic.
uPVC frames
Available in the following window styles:
- Bay windows
- Casement windows
- Sash windows
- Tilt and turn windows
The most commonly installed window type in the UK is uPVC. Everest’s uPVC windows are durable and require very little maintenance. They’re also the most affordable window type Everest offers and its double glazing casement, sash and bay windows are A-rated, and its tilt and turn windows are B-rated. However you choose, Everest’s frames can be customised with different uPVC colours. For a wood grain look, choose one of Everest’s wood grain finishes – this mimics the look of wood but costs less and retains better energy efficiency in most cases.
Aluminium frames
Available in the following window styles:
- Bay windows
- Casement windows
Everest’s aluminium windows are sleek and stylish and require minimal maintenance. Thanks to their sleek frame, aluminium windows create a contemporary feel and look. The frame material is strong and durable, which makes it suitable for most homes. Everest’s aluminium windows have a range of finishes to choose from. It’s important to note that Everest’s aluminium windows are B-rated – this material, regardless of window provider, is renowned for less heat retention.
Timber frames
Available in the following window styles:
- Casement windows
- Sash windows
Timber windows are often considered the most aesthetically pleasing window type. Everest’s timber windows are crafted from sustainable wood. The product also comes with a 30-year guarantee. Timber windows have a stained finish to highlight the natural beauty of the wood. For a customised look, choose from one of Everest’s paint finishes. Naturally, timber has a good reputation for thermal insulation (with casement frames carrying an A rating) and would be a good choice for eco-conscious homeowners.
What is Everest’s window installation process?
Below are some things you should consider and understand about the installation process when sourcing quotes.
Initial consultation
Everest will offer expert advice about its products and discuss energy efficiency and security with you. At this stage, you will also discuss financing options and any available offers that Everest is running.
Decide your window style and type
Everest windows are bespoke and made to order. You’ll want to browse their various styles and types of windows before making any rushed decisions. Carefully consider Everest’s colour options as well as glass types. You’ll need to do this before you can receive a quote, as Everest won’t be able to give you a quote without knowing your style requirements.
Everest’s quote
Once Everest is aware of your requirements, they will share a detailed cost breakdown with you. This is your opportunity to communicate if the details aren’t correct. Everest has a seven-day price match scheme, whereby if you have found a like-for-like quote from a different provider that is cheaper – Everest will match it.
Technical visit
Since Everest’s products are made-to-order, a technical visit is required before the manufacturing process can begin. Someone from the Everest team will visit your home to measure your windows. They will also assess your home for any potential installation issues. This is also an opportunity for you to ask questions relating to your installation, and check there will be no additional parts needed leading to further fees.
Check for planning permission
The Everest team will most likely be able to guide you here. However, you should also check for yourself if you require planning permission, as it is ultimately your responsibility as the homeowner.
Installation
The time it takes to manufacture your bespoke windows will vary between customers. Once ready, Everest will schedule an installation date that suits you. After installation, Everest will provide you with a FENSA certificate and a guarantee and warranty pack with details about aftercare.
What are Everest’s energy efficiency ratings?
Double glazing windows’ energy efficiency is measured in various ways.
Energy efficiency rating
All double glazing windows come with an energy efficiency rating. The scheme is run by the British Fenestration Rating Council (BFRC). The rating system tells you how efficient the windows are by using a rating scale from A++ to E – with the latter being the least energy-efficient. Everest’s windows are rated B, A or A+ for double glazing and A++ for triple glazing.
Air leakage (L-value)
Everest’s windows have a 0.0 L-value. This means they are not losing heat and are extremely tight – the optimum L-value is zero.
Solar gain (G-value)
Everest’s double glazing windows have a 0.46 G-value. This refers to the window’s heat-trapping capability. The values are rated from 0-1; the lower the G-value, the better it is at heat-trapping.
Thermal transmittance (U-value)
Everest’s double glazed-windows have a 1.22 U-value. The lower U-value means there is less internal heat escaping from your windows and should in theory help your home stay warmer.
Overall, a considerable amount of heat is lost through our double-glazed windows, and twice as much heat is lost through single-glazed windows.
According to Energy Saving Trust, A-rated double glazing could save you £195 annually on your energy bills and save 330kg of carbon dioxide. The savings are greater with A++-rated windows, which could see you shave up to £235 of your bills and 405kg of carbon dioxide.
Conclusion
Based on extensive research and competitor comparisons, our researchers believe Everest is well worth considering if you’re looking for a reputable double glazing company. Though it may not be the cheapest option depending on your project, its market-leading guarantees make the cost more worth it. The company’s wide range of frame materials, styles, colours and finishes, glass types and hardware options make it more likely you’ll find windows to match your home’s aesthetic and energy efficiency needs.
Frequently asked questions about Everest windows
Everest’s double glazing windows are made-to-order, so its pricing is not widely available on its website. However, its bespoke packages could be more expensive than some other window providers, according to our research. Factors such as style, type and colours can also increase the price of Everest’s windows.
Yes, Everest does offer triple glazing. Its triple glazing windows are A++-rated and great for retaining heat in your home. You can also order Everest’s triple glazing in all three frame materials – aluminium, timber and uPVC.
Rachel Sadler is a seasoned journalist and content creator with a multi-year track record in both print and digital media.
Rachel is an expert in renewable energy, particularly solar panel solutions for UK households. She investigates the most effective solar panels for domestic use, emphasising cost savings and the potential for households to produce their own electricity. Her interests extend to home insulation, specifically the role of windows in enhancing energy efficiency, aesthetic appeal, and cost reduction. She delves into the best materials for durability, maintenance, and affordability, crafting informative guides and articles.
