4 Best Double Glazing Companies in the UK

Need new windows for your home but now sure who you should buy them from? We’ve got you covered. Here’s our review of the best double glazing companies in the UK

Does your home feel chilly when it’s cold outside? Are you paying way too much for your heating bills? Is the sound of a busy road outside your house driving you nuts? Or are you just a bit concerned about the security of your home? Installing new double glazing can help solve all these issues.

Double glazed windows are made up of a frame that is fitted with two panes of glass. Between the two panes of glass is a tiny gap filled with air or a natural gas such as argon. This acts as an insulating layer, helping to keep the noise out and the heat in, while the two panes of glass make the window much more secure.

There are lots of double glazing companies in the UK that supply and install windows, but knowing which one to use can be a challenge. We’ve compared a number of different companies on everything from product range to price, to bring you a rundown of the brands we believe offer the best quality - and best value - double glazed windows. Check out which double glazing companies made our list below!

On This Page



Best Double Glazing Companies in the UK

The 4 best double glazing companies in the UK are: Anglian Home Improvements, Everest, Safestyle UK and Zenith Home Improvements. We’ve compared each company on factors that are important to you, from customer service and price to product range and warranty periods. Check out the table below for the lowdown on each company.

Double Glazing Company
Best for
Rating
Anglian Home Improvements
Best Product Range
Everest
Best Customer Satisfaction
Safestyle UK
Best Value for Money
Zenith Home Improvements
Best Warranty Period


Back to top



Anglian Home Improvements

Best Product Range

best double glazing anglian

Established in 1966 as Anglian Windows, the company now trades under the name Anglian Home Improvements. Anglian is a market leader in home improvements, having helped over 1 million customers install double glazed windows.

All of Anglian’s double glazed windows are tailor-made to fit your home perfectly, and the company takes particular pride in the fact that its products are ‘Made in Britain’ from start to finish. Anglian offers a wide range of window styles in aluminium, wooden and uPVC frames that come with an A to A++ efficiency rating.

Anglian scores well for the quality of its double glazed windows and installation service. However, the company has received some negative comments about its prices, with a few customers complaining about how expensive Anglian's products are compared to other window installers. Customer service and after-sales support has also been an issue for a handful of homeowners.

Pros
Cons
Windows have an A to A++ efficiency rating
More expensive than other companies
Choice of 7 different window styles
Some issues with customer service
Choice of uPVC, wooden and aluminium window frames
Windows carry the ‘Made in Britain’ marque


Get a Double Glazing Quote for Your Home



Everest

Best Customer Satisfaction

best double glazing everest

Everest has been supplying and installing windows since 1965. Within this time, it has fitted double glazing in over 2 million homes in the UK.

All of its windows are manufactured in the UK at factories in Kent and Glamorgan. Everest's windows are produced in aluminium, wood and uPVC frames, and come in a range of different colours and finishes to suit every home. It also offers some of the most popular double glazing window styles including casement and sash.

Everest is well-known for the quality of its windows and installation, with its top-of-the-range Amdega collection of wooden double glazed windows proving a popular choice for homeowners.

The majority of its customers have been happy with the customer service they received, although some have complained about the poor quality of the company’s complaints handling.

Pros
Cons
Better customer feedback than other companies
More expensive than other companies
Windows have an A+ efficiency rating
Some issues with complaints handling
Choice of 5 different window styles
Choice of uPVC, wooden and aluminium window frames


Get a Double Glazing Quote for Your Home



Safestyle UK

Best Value for Money

best double glazing safestyle

Installing windows for over 20 years, Safestyle UK has expanded from a single store in Bradford to over 40 stores across England and Wales. It's the UK’s number one supplier and installer of uPVC products, having helped over 800,000 homeowners install new windows and doors.

Safestyle UK offers its customers a range of popular double glazed window styles, including casement and sash windows. Its new Eco Diamond range of A-rated glass is available in most of its window styles. All of Safestyle’s windows are manufactured at its specialist factory in the UK.

Safestyle UK performs well for the quality of its double glazed windows and installation service, with many customers being impressed with the knowledge of the company's salespeople and the skill of its fitters.

Safestyle UK has also been commended on the fairness of their prices - the company operates a ‘Price Promise’ agreement in which it guarantees to charge less for its windows than any other competitor. Some customers have had issues with Safestyle UK's customer service, however.

Pros
Cons
Guarantees to charge less than other companies
Only offers uPVC window frames
Choice of 5 different window styles
Some issues with customer service
Nationwide coverage across England and Wales
Quotes valid for 12 months


Get a Double Glazing Quote for Your Home



Zenith Home Improvements

Best Warranty Period

best double glazing zenith

Founded in 1969, Zenith Home Improvements is one of the largest double glazing companies in the UK, installing over 50,000 windows each year.

The company specialises in uPVC products, manufacturing its entire range of windows in this type of frame material. For those who are more conscious about the environment, Zenith has introduced its EcoTherm range of A-rated energy efficient windows, made from a recycled uPVC plastic.

While the quality of Zenith's windows is fair, some customers have raised issues with the installation process. There have been complaints about the poor quality of fitting, with windows being the wrong size or shape and fitters leaving a mess. Customers have also had problems with long delays waiting for installation, along with slow response times for fixing faulty or damaged windows.

Pros
Cons
15 years warranty with the Carefree Agreement
Only offers uPVC window frames
Windows made from recycled plastic
Poorer quality windows than other companies
Choice of 5 different window styles
Some issues with installation and customer service
Quotes valid for 24 months


Get a Double Glazing Quote for Your Home


Back to top



Methodology: What Double Glazing Elements Did We Review?

Window Styles

Windows come in a range of different designs and opening styles to suit the facade of different homes. Casement windows are the most popular style in the UK, but bay and sash windows are also common. Read on to find out more about the most popular window styles.

  • Bay: Bay windows are made up of three windows that are arranged at sharp angles to extend beyond your home’s exterior wall. The windows can project at 45 degree angles, or at 90 degree angles to form a box bay window. Bay windows allow you to enjoy an extended view of the outdoors, and can even provide an additional seating area within your room.

  • Casement: Casement windows are the most common style of double glazing in the UK. These windows are attached to their frame by one or more hinges at the side, and typically open outward using a handle. Casement windows are often held open in position using a metal bar with hooks, known as a casement stay.

  • Sash: Sash windows have one or more movable frames (or sashes) that open by sliding up and down via a sliding mechanism attached to the window frame. Sometimes sash windows open by sliding side to side, rather than up and down. These frames are popular on more traditional, period properties.

  • Tilt and Turn: Tilt and turn windows open in 2 different ways. The ‘tilt’ functionality of the window allows it to be tilted inwards (or outwards) at an angle to provide ventilation in a room. The ‘turn’ functionality of the window allows it to be swung inwards(or outwards) for a wider opening option, allowing more air to enter your home.

  • Dual Turn: Dual turn windows are often made up of 2 separate panes of glass that can be separately tilted outwards to provide ventilation for your home. These window panes can also rotate 360°to allow you to reach both sides of the glass from within your home; handy for cleaning.


The table below shows you what window styles the best double glazing companies offer:

Double Glazing Company
Window Styles
Anglian Home Improvements
Bay, Casement, Cottage, Sash, Shaped, Tilt & Turn
Everest
Bay, Casement, Dual Turn, Sash, Tilt & Turn
Safestyle UK
Arched, Bay, Casement, Sash, Tilt & Turn
Zenith Home Improvements
Bay, Bow, Casement, Sash, Tilt & Turn



Window Frames

There are 3 main types of window frame material available in the UK: wooden, uPVC and aluminium. The frame around your windows can have a huge impact on the overall look of your home, so it’s an important decision to get right. This table gives you a rundown of their key features:

Material
Natural Appearance
Lightweight
Low Cost
Weather Resistant
Low Maintenance
Energy Efficient
Aluminium
Wooden
uPVC


  • Aluminium: Aluminium is the most modern-looking type of window frame material, making it best suited to contemporary houses. It comes in the widest range of colours, allowing you to make your home truly unique. Like with uPVC, it is an extremely lightweight but durable material. It's an expensive choice however, and provides the least insulation amount of insulation out of all the window frames (meaninf your home could feel a little chilly in the winter). Aluminium window frames are weather resistant, meaning they require very little maintenance to retain a fresh look. They are also incredibly strong, enabling you to improve your home's security.

  • uPVC: uPVC is the most popular type of material for double glazed window frames in the UK. The main selling point of uPVC is that it's very low maintenance, requiring a wipedown every now and then to keep it looking spick and span. uPVC is also weather resistant, meaning it doesn't get damaged from extreme weather like hail or snow. uPVC is the cheapest frame material available on the market, costing around 3 times less than wooden window frames. It comes in many colours and finishes (including wood effect), although white is the most common option. Because it is a type of plastic, uPVC window frames are better suited to new-build or modern homes.

  • Wooden: Wooden window frames are the most environmentally-friendly type of material, and are great for listed or period property because of their traditional look. While wood is extremely strong, it can be vulnerable to adverse weather conditions. This means it's susceptible to rotting, splintering and warping. Wooden window frames are therefore the most high maintenance, needing regular repairs such as sanding and repainting. However, if looked after properly they can last up to 60 years, making their higher upfront cost a worthwhile investment.


The table below shows you what window frames the best double glazing companies offer:

Double Glazing Company
Window Frames
Anglian Home Improvements
Aluminium, uPVC, Wooden
Everest
Aluminium, uPVC, Wooden
Safestyle UK
uPVC
Zenith Home Improvements
uPVC



Window Efficiency and Safety

New windows are given an energy efficiency rating by the National Fenestration Rating Council (NFRC). This ranges from A++ (very efficient) to G (inefficient) using a ‘rainbow’ rating label, similar to those found on electrical appliances around your home. The more efficient a window is, the better it will keep the heat in and the cold out. Always try to choose windows with an energy efficiency rating of B and above, as these will save you the most on your energy bills.

The Energy Saving Trust also runs its own rating system in which it endorses windows with high energy efficiency.

You should also ensure your new double glazed windows meet or exceed the British Security Standard. Secured by Design (SBD), an official police security initiative, endorse windows which have achieved certain standards of security, including burglary resistance. This means they’re harder to break and help protect your home from break ins.

The table below shows you the number of windows endorsed by the Energy Saving Trust and the SBD initiative from the best double glazing companies:

Double Glazing Company
Window Efficiency
Number of Windows Endorsed by The Energy Saving Trust
Number of Windows Endorsed by Secured by Design
Anglian Home Improvements
A to A++
14
4
Everest
A+
5
0
Safestyle UK
A
2
2
Zenith Home Improvements
A
2
0



Window Warranty

A warranty is designed to protect you from having to pay for any repairs or replacement windows should yours break or get damaged during the warranty period. A window warranty usually won’t cover issues relating to normal wear and tear, improper handling, or modifications to the window made by anyone other than the installation company, however.

Providing a warranty period for your windows is not mandatory, but any reputable double glazing company should offer a generous warranty. The table below shows you the window warranty periods of the best double glazing companies:

Double Glazing Company
Window Frames
Anglian Home Improvements
10 years
Everest
10 years
Safestyle UK
10 years
Zenith Home Improvements
15 years


The warranty period of a window is a good indication of its quality. The longer a window’s warranty period, the more faith a company has that it’s well-made and won’t break. Always choose a double glazing company that offers a long warranty period on its windows - all the brands in this list provide generous warranties.


Back to top



Best Double Glazing Companies: The Verdict

If you’re in need of new windows for your home, then there’s plenty of good quality double glazing companies for you to choose from. Whether you want energy efficient windows that will help reduce your heating bills, excellent customer support and warranty periods, or simply want to get great value double glazing that won’t break the bank, then there’s a window company for you.

The best 4 double glazing companies in the UK are:

  1. Anglian Home Improvements: best product range
  2. Everest: best customer satisfaction
  3. Safestyle UK: best value for money
  4. Zenith Home Improvements: best warranty period

To get a personalised double glazing quote, all you need to do is complete this short form with some basic information about yourself and your home. One of our trusted partners will then get in touch with you to arrange a home visit and provide you with a free no obligation quote.


Back to top



FAQs

Should you use a local double glazing company?

Yes, many homeowners choose to use a local double glazing company. The main benefit of this is that their windows are likely to be high quality, since small firms have to rely more heavily on recommendations to attract customers. You’ll probably find that they offer a more “personal” service and competitive prices, too. If you choose to use a local double glazing company, make sure they’re registered with FENSA. This ensures that they comply with the Government’s building regulations.

How long does double glazing last?

Double glazing typically lasts about 20 years before it needs replacing, but it can have a lifespan anywhere between 15 and 35 years depending on the quality of the windows, how well they are installed, and their location in your home. If your windows let in drafts and cold air, have condensation between the panes of glass, or show signs of visible damage such as broken locks or handles, it’s probably time to replace them.

How much does double glazing cost?

The cost of double glazing is affected by the style, size and number of windows you have installed, but you should expect to pay between £400 and £600 per window. Installing new double glazing in a two-storey house will cost about £5,000 to £8,000.

How much can you save with double glazing?

Double glazing improves your property’s insulation, meaning you’ll rely less on your central heating to warm your home. As a result, you can save money on your energy bills. It’s estimated that by switching from single glazing to double glazing with an energy efficiency of A+, you can save up to £110 per year on your energy bills.

Is double glazing worth it?

The short answer is yes. Double glazing not only improves your property’s energy efficiency (saving you money on your utility bills), but it also improves your home’s security and helps to insulate against unwanted noise from outside. New double glazing has been found to increase a property’s market value by up to 10%, also. So despite its cost, it’s definitely worth installing new double glazing.


Back to top



How Do You Get a Double Glazing Window Quote?

Click your location on the map below to get your FREE quote.



Back to top

Spread the Word!