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Replacement Windows Cost Guide | Average Cost of Replacing Windows

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Replacing old, inefficient windows can help reduce your fuel bills and your home security - find out how much this will cost with our replacement window cost guide.

How much does a Replacing Windows cost?

Average cost in UK: £7k

Get local prices

£4k


LOW COST

£15k


HIGH COST

£7k


AVG COST

The average cost for Replacing Windows is £7000. You are likely to spend between £4000 and £15000 total. Exact price may vary depending on your area and project details.

Next Step: Find out exactly how much your project will cost.

How much does a Replacing Windows cost?

Average cost in UK: £7k

Get local prices

£4k


LOW COST

£15k


HIGH COST

£7k


AVG COST

The average cost for Replacing Windows is £7000. You are likely to spend between £4000 and £15000 total. Exact price may vary depending on your area and project details.

 

Cost Summary for Replacement Windows:

Price Range = £4,000 to £15,000

Average Cost = £7,000

Cheapest Price = £4,000

 

The average window replacement cost of a three bedroom terrace is around £7300 but the final cost to you will depend on the size and number of windows and the material you are using for the window frames.

The cost of replacing windows will depend on the size and the material as wooden frames are more expensive than uPVC frames but many people prefer the look of timber frames. The final decision on replacing your windows is up to you and you will need to choose what you can afford as well as what will suit the look of your home.

 

Should I choose uPVC replacement windows?

The cost to replace windows in your house with uPVC is the cheapest option as they are maintenance free, great at keeping out draughts but some people just don’t like the look. If you are on a budget they are the best way to go for window replacement.

 

I want my home to be more energy efficient, what should I do?

You should consider replacing windows with double glazing for a more energy efficient house as they will keep the cold out and the heat in. If you replace all standard windows with double glazing you could save up to £165 on your yearly energy bills. Double glazing will cost you from £385 per window. Of course the size of the window ultimately determines the replacement cost of a window.

 

How much do specialist windows cost?

If you want a specialist option, such as a stained glass window, you are looking at paying £30 to £100 per square metre; replacing a sash window will cost around £1,000 per window replacement.

 

The cost of replacement windows

The cost will depend on the size and whether you choose double glazing or not. For a rough guide:

  • A fully sealed and double glazed panel 200mm x 400mm is £22.50 whereas a single pane of glass 4mm thick 200mm x 450mm is £14

  • Double glazed window 530mm x 780mm is around £275

  • Double glazed window 980mm x 1340mm is around £450
 

Who should fit my replacement windows?

If you are living in England and Wales, the best way to make sure that your replacement windows are fitted properly and to regulation standards you will need to choose an installer who is registered with one of the official Competent Person schemes such as FENSA, Certass or Network Veka Installers. Window installers who are registered with one of these will give you a certificate when they have finished saying that the windows have been fitted in compliance with all regulations. If you don’t use a registered installer you will have to seek building control approval before window installation.

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