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Last updated: 29 March 2021

Double Glazing Cost in the UK

How Much Does Double Glazing Cost in the UK?

The average price for double glazing in the UK starts from £225 and can range all the way up to £1,900.

Double glazing prices depend on a few factors:

  • Whether you go for double glazed windows or doors
  • The colour of the window/door
  • The size of the window/door
  • The energy rating of the window/door

In addition, you will be charged for the full technical expertise, extra security features, and full installation such as fixings or sealants. In the table below you can see the general breakdown of double glazing costs.

Average Cost of Double Glazing
Style Size Average cost
uPVC casement windows 1200mm x 1200mm £225 - £300
French casement windows 1200mm x 1200mm £525 - £725
Tilt and turn windows 1200mm x 1200mm £500 - £675
uPVC sash 1200mm x 1200mm £725 - £950
Bay windows 3000mm x 1500mm £1,250 - £1,475
Bow windows 3600mm x 1500mm £1,600 - £1,900
French doors 1200mm x 2100mm £950 - £1,075
Sliding patio doors 1500mm x 2100mm £975 - £1,375
Bi-fold doors 1800mm x 2100mm £2,700 - £3,6250
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The cost of new double glazing will gradually pay for itself because, in comparison with the single pane windows, double glazing mitigates heat loss and allows you to save around 11% of your heating bill.

This is possible thanks to the technology behind double glazing: two panes of glass with a gap of air between them are mounted to a frame. The gap is typically filled with a vacuum or argon gas, which makes it difficult for air to circulate through the gap.

This way, you can keep warm air inside more easily in the winter, and in the summer months, keep the hot air out.

If you are interested in knowing more about double glazed prices, do not forget to fill in the form to get up to four free quotes. It takes just 1 minute to fill in the form and there is no further obligation with the service.

Compare Double Glazed Window Prices

Casement Windows

Casement windows are designed to be installed in large houses as they allow the maximum amount of light to penetrate the rooms. They open rather like doors and are usually hinged on one side. Due to design and glass patterns, the windows provide good air circulation and a unique aesthetic.

uPVC Casement Windows
Size Colour Price range
1200mm x 1200mm Wood Grain £250 - £300
1200mm x 1200mm White £225 - £275
1000mm x 1000mm Wood Grain £225 - £275
1000mm x 1000mm White £200 - £250
1000mm x 500mm Wood Grain £200 - £250
1000mm x 500mm White £175 - £200
500mm x 500mm Wood Grain £175 - £200
500mm x 500mm White £150 - £175
French Casement Windows
Size Colour Price range
1200mm x 1200mm Wood Grain £675 - £725
1200mm x 1200mm White £525 - £575
1000mm x 1000mm Wood Grain £625 - £675
1000mm x 1000mm White £500 - £550
1000mm x 500mm Wood Grain £600 - £650
1000mm x 500mm White £475 - £525
500mm x 500mm Wood Grain £575 - £625
500mm x 500 mm White £450 - £500

Tilt and Turn Windows

Tilt and turn windows have a dual-hinge system allowing for more practical use, especially when cleaning. They suit perfectly big houses with small children because they offer maximum light exposure and security (they are tilted only a fraction to prevent children from opening them widely).

Tilt and Turn Windows
Size Colour Price range
1200mm x 1200mm Wood Grain £625 - £675
1200mm x 1200mm White £500 - £550
1000mm x 1000mm Wood Grain £575 - £625
1000mm x 1000mm White £475 - £525
1000mm x 800mm Wood Grain £550 - £600
1000mm x 800mm White £450 - £500
800mm x 800mm Wood Grain £525 - £575
800mm x 800mm White £400 - £450

uPVC Sash Windows

uPVC sash windows are manufactured from a number of smaller panels separated by bars. They fit perfectly old properties that were built in Georgian times, which decreases the chances of being replaced. Unfortunately, it is costly to double glaze due to a limited number of natural uPVC Sash.

uPVC Sash Windows
Size Colour Price range
1200mm x 1200mm Wood Grain £850 - £950
1200mm x 1200mm White £725 - £825
1000mm x 1000mm Wood Grain £725 - £825
1000mm x 1000mm White £625 - £725
1000mm x 500mm Wood Grain £700 - £800
1000mm x 500mm White £600 - £700
500mm x 500mm Wood Grain £625 - £700
500mm x 500mm White £525 - £600

Bay Windows

A bay window is available in three openings and constitutes of one main window and two smaller ones on either side. It is typically installed in modern houses to enhance the interior floor space. By having only three panels, it allows for a significant amount of light penetration.

Bay Windows (3 Section)
Size Colour Price range
3000mm x 1500mm Wood Grain £1,375 - £1,475
3000mm x 1500mm White £1,250 - £1,350
3000mm x 1200mm Wood Grain £1,275 - £1,375
3000mm x 1200mm White £1,150 - £1,250
2400mm x 1500mm Wood Grain £1,250 - £1,350
2400mm x 1500mm White £1,125 - £1,350
2400mm x 1200mm Wood Grain £1,150 - £1,250
2400mm x 1200mm White £1,050 - £1,150

Bow Windows

The bow window usually has four to five openings in a curved structure, which differentiates it slightly from the bay window. By having more glass panes, more light is allowed in, and due to its ability to be wrapped around the building corner, the bow window offers a unique two-sided view of the home.

Bow Windows (4 Section)
Size Colour Price range
3600mm x 1500mm Wood Grain £1,750 - £1,900
3600mm x 1500mm White £1600 - £1,700
3600mm x 1200mm Wood Grain £1,650 - £1,750
3600mm x 1200mm White £1,500 - £1,600
3000mm x 1500mm Wood Grain £1,650 - £1,750
3000mm x 1500mm White £1,500 - £1,600
3000mm x 1200mm Wood Grain £1,525 - £1,650
3000mm x 1200mm White £1,400 - £1,500
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Compare Double Glazed Door Prices

uPVC French Doors

When it comes to double glazed doors, uPVC french doors provide a quintessential and charming feeling to your house. It maximises the amount of air ventilation and sunlight. They serve as a convenient entry into your garden or conservatory and bring the outside atmosphere inside your home.

In addition, these double glazed doors come in a variety of colours, patterns, textures, and styles.

French Doors (4 Section)
Size< Type Price range
1800mm x 2100mm Half Glazed & Palin Panel £1,100 - £2,000
1800mm x 2100mm Fully Glazed £1,075 - £1,175
1500mm x 2100mm Half Glazed & Palin Panel £1,025 - £1,125
1500mm x 2100mm Fully Glazed £1,000 - £1,100
1200mm x 2100mm Half Glazed & Palin Panel £975 - £1,075
1200mm x 2100mm Fully Glazed £950 - £1,050

uPVC Sliding Patio Doors

uPVC sliding patio doors offer a high level of security because they are fitted with the multi-lock system. They are also equipped with a multi-wheeled system of air glides which enable the door to move along its track.

uPVC Sliding Patio Doors (2 Panel)
Siz Colour Price range
2000mm x 2100mm Wood Grain £1,300 - £1,150
2000mm x 2100mm White £1,050 - £1,150
1800mm x 2100mm Wood Grain £1,250 - £1,400
1800mm x 2100mm White £1,000 - £1,100
1500mm x 2100mm Wood Grain £1,225 - £1,375
1500mm x 2100mm White £975 - £1,075

Bi-Folding Doors

Bi-folding doors have two panels that fold back in sections and can be made of different materials: you can opt for a uPVC door in this case, or aluminium or wood. They increase the accessibility between the rooms and outside space due to their width, which can reach several metres.

Bi-Folding Doors (3 Panel)
Size Colour Price range
2500mm x 2100mm Wood Grain £3,500 - £3,900
2500mm x 2100mm White £2,900 - £3,200
2100mm x 2100mm Wood Grain £3,350 - £3,700
2100mm x 2100mm White £2,750 - £3,050
1800mm x 2100mm Wood Grain £3,235 - £3,625
1800mm x 2100mm White £2,700 - £3,000

uPVC Front Doors

Front doors can often have glass features to improve the aesthetics of the front of the house. This glass should also be double glazed to optimise your home's thermal efficiency and performance. There are different styles, including an arched glass feature above or around the door, or a diamond lead accent on the door itself.

uPVC Front Doors (900mm x 2100mm)
Glass Style Lock Type Price range
Arched Top Light Standard Roller £575 - £675
Arched Top Light High-Security £625 - £725
Diamond Leads Standard Roller £600 - £700
Diamond Leads High-Security £650 - £750

uPVC Back Doors

Back doors, similar to front doors, can also feature glass on them. This can be convenient if you have a backyard and want to keep an eye on children playing outside. uPVC back doors can either feature half a panel or a fully glazed glass door.  

uPVC Back Doors (900mm x 2100mm)
Glass Style Lock Type Price range
Half Glazed Flat Panel Standard Roller £650 - £750
Half Glazed Flat Panel High-Security £550 - £650
Fully Glazed Standard Roller £650 - £750
Fully Glazed High-Security £550 - £650

What Are the Best Double Glazing Companies in the UK?

There are great double glazing companies in the UK that can carry out your double glazing project.

The biggest names you may know about are Everest, Safestyle, and Anglian. However, there are also local installers across the country.

Whichever company you go with, ensure they provide an adequate warranty on their windows. Double glazing, if properly installed, should last at least 20 years.

How Do I Find the Best Windows and Frames?

The best frames for your double glazed windows or doors depends on your own personal preferences and budget.

uPVC windows are the most popular type of frame because it is much more affordable than timber. Besides that, there is a lower chance of rot from moisture, which also makes it easier to clean and maintain.

However, not everybody likes uPVC material, so they tend to go for alternatives such as aluminium windows. The disadvantage is a higher price, but it can manage to maintain the old vintage style of your home—if that is what you are looking for. Overall, depending on the size of the windows and doors, the thickness can differ from 14mm-28 mm.

If you are after a traditional look, then wooden double glazed windows are for you — but be prepared for the higher costs. As an alternative solution, some manufacturers offer uPVC windows with a wood effect.

Double Glazing Installation

How Much Do Replacement Windows Cost?

In terms of performance, double glazing is a more improved technology compared to single glazing; however, they are not always perfectly efficient. In cases where condensation materialises between the panes, this can cause cracks or chips that damage the window or the door.

In this case, you will need to get your windows replaced. The cost of replacement windows depends on the extent of the damage, as well as the type of window you have.

When installing double glazed products, manufacturers usually offer a guarantee for twenty years, but the risk of damage still exists. There is no need to replace the whole installation because the measurements were taken and the frames remain intact; so, you can just replace the double glazing, which is cheaper.

7 Benefits of Using Double Glazing

1. Lower Energy Bills

Double glazing has a direct effect on the cooling and heating system of the house as it can retain up to 87% of heat during winter and lose up to 40% heat in summer.

2. High Security

Nowadays, double glazed doors and windows are manufactured with a multi-locking system, which, together with uPVC framing, helps in protecting your home against burglars.

3. Soundproof

The new technology is able to keep outside noise, such as traffic noise, clubs, loud air conditioners, or barking dogs from disturbing you in your home. Therefore, you can enjoy the peace and quiet of your place by cutting out noise pollution.

4. More Comfort

Double glazing offers a unique feeling of comfort and cosiness by making your family gatherings more relaxed. The technology will keep the temperature stable both during summer and winter times so that you do not have to worry about constantly adjusting the thermostat.

5. Less Condensation

Condensation occurs when moist air and cold surfaces converge. It can damage walls, floors, carpets, and window frames. Double glazing can dismiss these problems thanks to special gas between panes, which helps to regulate the temperature.

6. Increased Property Value

Installing double glazed windows and doors is a worthwhile investment because it brings value to your home. The benefits mentioned above are highly appreciated features in the market so the costs are justified.

7. Reduced Carbon Footprint

The actual worldwide challenges such as climate change and global warming cause serious concerns even today. In order to help mitigate the greenhouse effect, double glazing companies offer this technology as a method of reducing heat loss and household emissions.

Double Glazing Frames

Find the Best Prices for Your Next Doors and Windows

We hope that this guide will help you make the right choice when designing your dream home. We recommend that you take every detail into consideration when searching for double glazed windows and doors so that you were satisfied with your purchase.

Now that you know more about double glazing, fill in our short 1-minute form at the top of the page and get up to four quotes from trusted suppliers. Our services are free and without any further obligation.

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Ana Kukoska
Written by Ana Kukoska, Former Writer

Ana is a Content Coordinator at GreenMatch. With a background in journalism and digital marketing, she has several years of experience in research, analysis, and content creation. On top of this, her focus lies on SEO and digital PR in the following areas: geen sector, sustainability, business, innovation, and more. She and her content team have been published in reputable sites like The Odyssey Online, My News Desk, Zero Waste Home and more