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 £175 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?

The most popular type of window in the UK is uPVC casement double glazing.

The average cost of uPVC casement double glazed windows for a flat with 4 windows is £2,140 while a 10 window house can expect to pay around £5,350.

The table below shows typical double glazing prices for different types of properties in the UK.

Number of Windows
Material
Double Glazing Price
Flat with 4 windows
uPVC casement
From £2,140
House with 8 windows
uPVC casement
From £4,505
House with 10 windows
uPVC casement
From £5,350
House with 15 windows
uPVC casement
From £8,450


There are a number of factors that will affect the price you pay for double glazed windows. The material, size and style of window you choose will have a big impact on the cost.

uPVC is the cheapest double glazing window frame. Wooden frames are typically the most expensive option.

The table below shows the typical prices for common window materials in a casement style.

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


The most popular window styles are casement, sash, tilt turn and dual turn. Casement is generally the cheapest option. Dual turn is often considered the most expensive.

The table below shows the the typical price for different styles and sizes of double glazed windows.

Type of Double Glazed Window
Typical Price Per 60cm x 90cm Window
Typical Price Per 90cm x 120cm Window
uPVC Casement
£500 - £570
£775 - £840
uPVC Sash
£995 - £1,050
£1,565 - £1,630
Hardwood Casement
£845 - £910
£1,245 - £1,300
Hardwood Sash
£1,470 - £1,565
£1,820 - £1,905


If you are having more than 5 new windows, it is worth seeing if your installer will offer a discount.

Triple glazing is typically around 30% more expensive. See our triple glazing cost guide for more information.



How Much do uPVC Windows Cost?

The table below shows average prices for uPVC double glazing. Pricing covers the cost of the material and installation of the windows only*.

Size of Window
Location of Window
Prices Per Casement uPVC Window
Prices Per Sash uPVC Window
60cm x 90cm
Ground floor
£500 - £570
£995 - £1,050
60cm x 90cm
Second floor
£560 - £625
£1,065 - £1,140
90cm x 120cm
Ground floor
£775 - £840
£1,565 - £1,630
90cm x 120cm
Second floor
£840 - £900
£1,615 - £1,680
120cm x 120cm
Ground floor
£835 - £895
£1,595 - £1,650
120cm x 120cm
Second floor
£905 - £960
£1,750 - £1,815


Windows above the ground floor will cost more to replace as they require scaffolding for the installation.

We attended a homeowner receiving quotes for virgin upvc double glazing from Safestyle. Safestyle is widely considered to be the cheapest national installer. Below is the price quoted:

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


Some companies make upvc wood effect windows which are more expensive than basic upvc windows.

We attended a homeowner receiving quotes for 8 large premium upvc wood effect windows from two of the biggest installers: Anglian and Zenith. Below are the prices they quoted:

Installer
Material Finish
Style
Energy Efficiency
Quoted Cash Price
Zenith
Woodgrain
Georgian
A
£17,286
Anglian
Woodgrain
Cottage
A++
£11,503


Cheaper options are available from these companies.

Most double glazing companies can also replace windowed doors in order to fully insulate your property. Standard uPVC doors can cost around £500 - £1,000. More sturdy and secure composite doors can range vastly in price but usually start over £900.

Learn more about uPVC windows



How Much do Wooden Windows Cost?

The table below shows average prices for wooden double glazing. Pricing covers the cost of the material and installation of the windows only*.

Size of Window
Location of Window
Prices Per Casement Wood Window
Price Per Sash Wood Window
60cm x 90cm
Ground floor
£845 - £910
£1,470 - £1,565
60cm x 90cm
Second floor
£900 - £970
£1,600 - £1,745
90cm x 120cm
Ground floor
£1,245 - £1,300
£1,820 - £1,905
90cm x 120cm
Second floor
£1,325 - £1,380
£1,945 - £2,105
120cm x 120cm
Ground floor
£1,365 - £1,405
£1,900 - £1,965
120cm x 120cm
Second floor
£1,425 - £1,495
£2,085 - £2,200


Learn more about wooden windows



How Much do Aluminium Windows Cost?

The cost of double glazed aluminium windows for a property with 4 windows is typically around £2,620 while a 10 window home will pay £10,350 on average.

The table below shows average prices for aluminium double glazing. Pricing covers the cost of the material and installation of the windows only*.

Size of Window
Location of Window
Prices 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


*Prices shown are averages based on feedback from some of the UK’s leading installers, meaning you could pay more or less for your double glazed windows. Please note that these figures are based on average double glazing costs for standard frames and do not include any optional extras.

An exact quote can only be given by an installer who has assessed your property and your requirements

We recommend comparing at least 3 quotes from trusted installers to find the best deal for you.

Learn more about aluminium windows

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7 Tips to Get the Best Price

Follow these 7 tips to ensure that you find 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.

  3. Before you attempt to get a quote from an installation company, do some research and have in mind exactly what you expect from your installer (number of windows, type of frame etc.). This will mean that all of the quotes you receive will be for the same service and can be compared more efficiently.

  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, which will offer you a better price for an immediate contract sign and a 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. Avoid any installer that does not provide a landline telephone. This is a warning sign that they are not a trusted company.

  7. Fill in the form at the top of the page. We offer a free price comparison service from the most trusted national and local double glazing installers in your area who offer the most competitive prices.

How Do I Find The Best Prices?

Step 1 - Click your location on the map below to get your FREE quote.
Step 2 - Once you answer a few simple questions, compare quotes in your area to find the best deal!



Cheap Double Glazing

While we recommend comparing a range of quotes, it is important to ensure that all the installers you request quotes from are registered with either FENSA or the Glass and Glazing Federation. These bodies only accept reputable installers so will help ensure you avoid any cowboy installers.

As well as comparing the biggest national double glazing companies (Everest, Anglian, Safestyle and Zenith), we recommend getting quotes from installers who are on the recommended installer lists of the leading window manufacturers in the UK; these installers will also be FENSA or GGF registered.

The leading manufacturers are A and B Glass, CMS Window Systems, Direct Window Company, Duraflex, Masterframe Window, and Tradesmith Ltd.

The Eco Experts offer a free comparison service which allows you to compare prices of trusted national and local installers in your area; simply enter your postcode in the form at the top of this page to compare quotes.

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.

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Will there be Any Extras on the Final Price?

windows costs

The cost of double glazing per window is affected by many factors. Most notable are the style of window and the material of the frame.

Our average prices detailed above are based on casement and sash uPVC windows. Aluminium and timber frames will cost more. Tilt turn and flying mullion options may also incur an additional cost.

Installers may also charge more for windows over two storeys high.

Before you agree to a contract with an installer, make sure you have received a detailed quote from them to ensure that there are no unexpected or hidden costs later on.

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How Much will you Save?

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

Studies have shown that properties with energy efficiency ratings of C and above, transitioning from single to double glazed windows could save between £50-£175 per year. These are average figures, calculated by the energy saving trust and are based on gas-heated houses.

Double Glazing Savings

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. The extra layer of glass also provides increased security, protecting your home should a break in be attempted.


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What Should your Quote Include?

As we mentioned above, it is important to compare quotes from at least three installers. Make sure that your quotes are based on the same products and number of windows.

You should avoid any installer who demands a large deposit upfront, pressures you to sign on the spot or does not provide a landline telephone; these are warning signs that they are not a reputable company.

Your quote should include all of the costs for the project, but always double check with the company. It should also outline how many windows will be replaced and installed, the total costs including labour costs and the warranties of any products used.

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What if you go Direct to a Window Manufacturer?

It is possible to go direct to a window manufacturer. 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 a recommended option as the correct installation is essential to ensure your windows are fitted properly.

However to give you an idea of how much you would pay for windows direct from a window manufacturer, we have outlined costs below. These prices are for A rated upvc double glazing from Direct Window Company, a leading UK window manufacturer (prices from Aug 2016):

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



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