How Much Does Double Glazing Cost?

Double glazing prices start from around £2,100 for 4 uPVC casement windows.

Double glazing will reduce your energy bills by up to £110 a year and will make your home quieter and more secure.

Complete the form above to compare double glazing prices.


In this Guide:

How Much do Double Glazed Windows Cost?

How Much do Different Double Glazed Window Styles Cost?

How Much do Double Glazed Window Frame Materials Cost?

What Should your Double Glazing Quote Include?

7 Tips to get the Best Price

Cheap Double Glazing

How Much can Switching to Double Glazing Save You?

Going Direct to a Window Manufacturer



How Much do Double Glazed Windows Cost?

double glazing cost

The cost of double glazing can vary depending on how many windows you’re getting installed and on what floor. Bear in mind that windows being installed above the ground floor will cost more as scaffolding will need to be set up for installation. If you are having a large number of new windows installed, it is also worth asking your installer if they will offer a discount. This could save you a lot of money.

The exact cost of double glazing can only be established once an assessment of your home and your requirements has been completed by an installer. However, to give you a rough estimate of how much you should expect to pay for new double glazed windows, we have put together the table below.

This shows you the typical starting price of double glazing for different sized properties having white uPVC casement windows installed. We have chosen this type of window as it is the most commonly installed in the UK. Please note that prices include installation fees:

Property Type
Number of Windows
Starting Price
Flat
4
From £2,140
House
8
From £4,505
House
10
From £5,350
House
15
From £8,450


Of course there are other factors that can affect the cost of double glazed windows including the style, frame material and size. Obviously the bigger the window, the more it will cost. More information can be found below.


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How Much do Different Double Glazed Window Styles Cost?

double glazed window style cost

The most popular styles of window in the UK are casement, sash, tilt and turn and dual turn. Casement windows tend to be the cheapest option due to the simplicity of their design. This is what makes them so popular in the UK. Sash windows are often the most expensive.

To find out more about the different styles of double glazed windows, visit our guide to the best double glazing.


How Much do Casement Windows Cost?

We have put together the table below to give you an idea of the price of different sized double glazed casement windows. Pricing is based on the cost of the window and installation fees.

Window Style
Window Size
Price per Casement uPVC Window
Casement
50cm x 50cm
£275 - £360
Casement
100cm x 100cm
£325 - £420
Casement
120cm x 120cm
£375 - £460



How Much do Sash Windows Cost?

We have put together the table below to give you an idea of the price of different sized double glazed sash windows. Pricing is based on the cost of the window and installation fees.

Window Style
Window Size
Price per Sash uPVC Window
Sash
50 cm x 50cm
£540 - £720
Sash
100cm x 100cm
£640 - £820
Sash
120cm x 120cm
£750 - £975



How Much do Tilt and Turn Windows Cost?

We have put together the table below to give you an idea of the price of different sized double glazed tilt and turn windows. Pricing is based on the cost of the window and installation fees.

Window Style
Window Size
Price per Tilt and Turn uPVC Window
Tilt and Turn
80cm x 80cm
£415 - £590
Tilt and Turn
100cm x 100cm
£490 - £625
Tilt and Turn
120cm x 120cm
£525 - £690



How Much do Dual Turn Windows Cost?

We have put together the table below to give you an idea of the price of different sized double glazed dual turn windows. Pricing is based on the cost of the window and installation fees.

Window Style
Window Size
Price per Dual Turn uPVC Window
Dual Turn
80cm x 80cm
£440 - £675
Dual Turn
100cm x 100cm
£525 - £670
Dual Turn
120cm x 120cm
£550 - £725


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How Much do Double Glazed Window Frame Materials Cost?

double glazed window frame cost

There are three main types of double glazed window frame material available in the UK: uPVC, wooden and aluminium. uPVC is the cheapest frame material, while wooden and aluminium frames normally cost around 30% to 50% more.

The table below shows you the typical price of installing uPVC, wooden and aluminium casement windows in different sized properties. Please note that prices include installation fees:

Property Type
Number of Windows
uPVC
Aluminium
Wooden
Flat
4
£2,140
£2,288
£3,508
House
8
£4,505
£4,856
£7,248
House
12
£6,762
£7,284
£10,872
House
16
£9,016
£9,712
£14,496



How Much do uPVC Windows Cost?

The table below shows the average price range for different sized uPVC casement double glazed windows. These prices are based on quotes obtained from some of the UK's leading window installers. Pricing covers the cost of the window as well as installation:

Size of Window
Location of Window
Price Per Casement uPVC Window
60cm x 90cm
Ground floor
£500 - £570
60cm x 90cm
Second floor
£560 - £625
90cm x 120cm
Ground floor
£775 - £840
90cm x 120cm
Second floor
£840 - £900
120cm x 120cm
Ground floor
£835 - £895
120cm x 120cm
Second floor
£905 - £960


We visited a homeowner receiving quotes for 8 large uPVC double glazed windows from Safestyle. Safestyle is one of the most well-known national window installers and is widely considered to be the cheapest provider of windows. Below we have provided details about the quote given to the homeowner:

Installer
Frame Material
Style
Number of Windows
Energy Efficiency
Quoted Cash Price
Safestyle
uPVC
Cottage
8
A++
£5,475.00


Some companies make uPVC 'wood effect' windows which are more expensive than basic white uPVC windows. We visited a homeowner receiving quotes for 8 large uPVC wood effect windows from two of the biggest window installers in the UK: Anglian and Zenith. Below we have provided details of the quotes given to the homeowner:

Installer
Frame Material
Style
Number of Windows
Energy Efficiency
Quoted Cash Price
Zenith
Woodgrain
Georgian
8
A
£17,286
Anglian
Woodgrain
Cottage
8
A++
£11,503


Learn more about uPVC windows


How Much do Aluminium Windows Cost?

The table below shows the average price range for different sized aluminium casement double glazed windows. These prices are based on quotes obtained from some of the UK's leading window installers. Pricing covers the cost of the window as well as installation:

Size of Window
Location of Window
Price Per Casement Aluminium Window
60cm x 90cm
Ground floor
£540 - £605
60cm x 90cm
Second floor
£605 - £680
90cm x 120cm
Ground floor
£655 - £735
90cm x 120cm
Second floor
£715 - £800
120cm x 120cm
Ground floor
£770 - £875
120cm x 120cm
Second floor
£845 - £955


Learn more about aluminium windows


How Much do Wooden Windows Cost?

The table below shows the average price range for different sized wooden casement double glazed windows. These prices are based on quotes obtained from some of the UK's leading window installers. Pricing covers the cost of the window as well as installation:

Size of Window
Location of Window
Price Per Casement Wooden Window
60cm x 90cm
Ground floor
£845 - £910
60cm x 90cm
Second floor
£900 - £970
90cm x 120cm
Ground floor
£1,245 - £1,300
90cm x 120cm
Second floor
£1,325 - £1,380
120cm x 120cm
Ground floor
£1,365 - £1,405
120cm x 120cm
Second floor
£1,425 - £1,495


Learn more about wooden windows



What Should your Quote Include?

Your quote should include a description of the double glazing you are having installed and where, a complete breakdown of the costs involved, and how long the installation will take to carry out.

This information should be provided to you on paper, unless you agree to receiving your quote via another medium, such as an email.

Costs that should be in your quote include the number, size and style of the windows, additional equipment for installation (e.g. scaffolding) and labour costs. If you are unsure about any costs, ask your installer to explain them to you. A reputable installer should be happy to do this.

We recommend that you compare quotes from at least three installers. You should make sure that these quotes are based on the same number and style of double glazed windows for a fair comparison.

It is also useful to ask installers to see examples of their work within your local area. This will give you a good sense of the quality of their work and whether they are a company you want to use to install your double glazing.

You should avoid any installer who demands a large deposit upfront, pressures you to sign a contract on the spot, or does not provide a landline telephone number. These are warning signs that they are not a trusted window installation company.


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7 Tips to get the Best Price

Follow these 7 tips to get the best double glazing prices:

1. Compare quotes from at least 3 installation companies. We recommend requesting quotes from leading double glazing installers such as Everest, Anglian, Safestyle and Zenith.

2. Ensure all the installers you get quotes from are registered with FENSA or the GGF. Certification from these bodies ensures you avoid any rogue traders - choosing a fraudulent company can be a costly mistake.

3. Before you get a quote from an installation company, have in mind exactly what style of window you want. Changing your windows again in the future because you no longer like the design can be expensive.

4. Do not fall into the trap of hard sales pitches. Any reputable installation company should offer you a quote and then give you time to consider your options.

5. Try not to be pressured into ‘on the day’ quotes. While you might be offered a better price for an immediate contract sign, you'll often have to pay a very large upfront deposit. These companies do not have your best interests at heart and you will be much better off dealing with a more reliable installer.

6. Buy at quiet times of the year. December is usually the quietest month for most double glazing companies. Buying your double glazed windows in this month will usually mean that you'll get a good deal.

7. Negotiate with the salesman. Salesmen often quote you a high initial price. By negotiating on price, they often drop their quote by several thousand pounds.


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Cheap Double Glazing

double glazing prices

We do not recommend that you buy cheap double glazing. Very low prices are often a sign of poor quality meaning you won’t reap the benefits that double glazed windows have to offer.

You should never buy double glazing based on price alone - other important factors to consider include the energy efficiency rating of the windows and the manufacturing or installation company you are buying them from.

It is important to ensure that all the manufacturers or installers you request quotes from for your double glazing are registered with either FENSA or the Glass and Glazing Federation (GGF). These Competent Person Schemes (CPS) work with window companies to ensure that they comply with the UK government’s building regulations. This will help you to avoid any cowboy salesmen or installers.

If you are on a budget, you can cut costs by purchasing windows with a lower energy efficiency. You do not need to buy double glazed windows with a rating of A to A++ (although they are considered the best). Windows with a rating of B or C will still cut your energy bills whilst costing considerably less.

Some double glazing companies also have flash sales on their windows throughout the year, however it can be difficult to know when they come and go. By signing up to a company’s newsletter, you can receive notifications of any discounts that are currently on offer. Negotiating with salesmen when receiving quotes for your double glazing can also save money.

If you can't afford the cost of new double glazing, secondary glazing offers some of the benefits of double glazing and is generally cheaper than replacing your windows.


You might also be interested in:

  • Are there any government grants for double glazing?


  • How Much can you Save?

    There are many factors which can affect the amount you save by installing double glazed windows. Your average annual energy usage, the energy efficiency of your new windows and the size of your property are just some of the factors to consider when estimating your financial savings.

    Studies have shown that households that transition from single glazing to double glazing with an energy efficiency of A+ can save up to £110 per year on their energy bills. These are calculated by the Energy Saving Trust and are based on gas-heated houses:

    Energy Efficiency
    Detached
    Semi-Detached
    Terrace
    Bungalow
    Flat
    A+
    £110
    £80
    £60
    £60
    £35
    A
    £105
    £75
    £55
    £55
    £35
    B
    £100
    £70
    £50
    £50
    £30
    C
    £100
    £70
    £50
    £50
    £30


    Saving money on reduced energy bills is only one of the many benefits that double glazing can bring. Double glazing adds value to your home and can cancel out unwanted noise from outside. The extra layer of glass also provides increased security, protecting your home should a break in be attempted.


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    What if you go Direct to a Window Manufacturer?

    It is possible to buy your windows directly from a window manufacturer. Prices will often be cheaper as installation is not included.

    However unless you have experience in fitting windows yourself you will still have to pay for installation. Going direct to a window manufacturer without your own window fitting expertise is not recommended as the correct installation is essential to ensure your windows are fitted properly.

    To give you an idea of how much you would pay for windows bought directly from a window manufacturer however, we have outlined the costs in the table below. These prices are for A rated uPVC double glazing bought from Direct Window Company, a leading UK window manufacturer:

    Size
    Price Per Window
    2ft x 4ft
    £199
    5ft x 4ft
    £299
    6ft x 4ft
    £329


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