Double glazing

Double glazing prices

Article 6 of 6

Find out the typical price of different double glazed windows and doors, and see our tips to cut costs so you won’t pay over the odds.

More than 40% of Which? members* say it’s difficult to find good advice on double glazing, and a quarter had no idea initially how much double glazing should cost, so we’ve produced a price guide to help you separate the good-value quotes from the bad.

We’ve worked with the Royal Institution of Chartered Surveyors (RICS) to uncover what the average price for different types and sizes of double glazed windows and doors are.

There are plenty of variables that affect prices and every house is different, but these prices – which include replacing windows and doors on the ground level and also higher up - should give you an idea of what to expect to pay.

We’ve also spoken to experts to find out what you can do to keep costs for double glazed windows down, and what elements can cost extra, so you can save where possible.

The tables below show how much you should expect to pay for various double glazing jobs, including varying sizes of sash and casement windows and different materials, from uPVC to hardwood. Under that you'll see the prices for different types of hardwood double glazed doors and Georgian PVC doors. 

Only logged-in Which? members can view the information in the table below. If you're not yet a member, try Which? for £1 to get instant access. 

Double glazed windows

Replacing double glazed windows on the ground floor
Double glazed window type Prices for different sizes and types
Size (cm) 60x90 90x90 90x120 120x120 180x150
uPVC casement window Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content
uPVC sash window Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content
Hardwood casement window Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content
Metal casement window Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content
Hardwood double hung sash window Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content
Table notes: Prices correct April 2016.  Metal type is Aluminium.
Replacing double glazed windows on the second floor
Double glazed window type Prices for different sizes and types
Size (cm) 60x90 90x90 90x120 120x120 180x150
uPVC casement window Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content
uPVC sash window Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content
Hardwood casement window Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content
Metal casement window Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content
Hardwood double hung sash window Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content
Table notes: Prices correct April 2016. Metal type is Aluminium.

Double glazed doors

The tables show prices for a range of different doors, from simple, wooden double glazed doors, to more ornate ones, such as Carolina doors, which have curved panels of glass just at the top.

You can also see prices for different grades of new ironmongery, and the cost if you use old fittings. In the bottom table, we show prices for plain uPVC doors, where a new frame and door are being added. 

New double glazed doors, refixing current ironmongery
Remove door and hang new double glazed door, refix ironmongery and decorate both sides Price
Flush (smooth) double glazed door (762mm wide) Subscriber only content
Panelled double glazed door with two glass panels made from safety glass (762mm wide) Subscriber only content
Hardwood period Carolina door with curved panels of glass at the top (838mm wide) Subscriber only content
Six panel Hemlock door (383mm wide) Subscriber only content
Table notes: Prices correct April 2016. These prices are for fitting a new door but not a new frame. They include adding new good quality ironmongery, as opposed refitting old ironmongery used before. All doors above are wooden, and the flush door is faced with plywood. The safety glass in this case is Georgian Wired Polished Plate glass.
New double glazed doors with new basic ironmongery
Remove door and hang new double glazed door, add new basic ironmongery and decorate both sides Price
Flush (smooth) double glazed door (762mm wide) Subscriber only content
Panelled double glazed door with two glass panels made from safety glass (762mm wide) Subscriber only content
Hardwood period Carolina door with curved panels of glass at the top (838mm wide) Subscriber only content
Six panel Hemlock door (383mm wide) Subscriber only content
Table notes: Prices correct April 2016. These prices are for fitting a new door but not a new frame. They include adding new good quality ironmongery, as opposed refitting old ironmongery used before. All doors above are wooden, and the flush door is faced with plywood. The safety glass in this case is Georgian Wired Polished Plate glass.
New double glazed doors with new good quality ironmongery
Remove door and hang new double glazed door, add new good quality ironmongery and decorate both sides Price
Flush (smooth) double glazed door (762mm wide) Subscriber only content
Panelled double glazed door with two glass panels made from safety glass (762mm wide) Subscriber only content
Hardwood period Carolina door with curved panels of glass at the top (838mm wide) Subscriber only content
Six panel Hemlock door (383mm wide) Subscriber only content
Table notes: Prices correct April 2016. These prices are for fitting a new door but not a new frame. They include adding new good quality ironmongery, as opposed refitting old ironmongery used before. All doors above are wooden, and the flush door is faced with plywood. The safety glass in this case is Georgian Wired Polished Plate glass.
Replace doors and frames with uPVC doors and frames Price
Georgian panelled white door and frame (900x2100mm) Subscriber only content
Georgian premier panelled white door and frame (900x2100mm) Subscriber only content
Table notes: Prices correct April 2016.

Cost of extras and tips from installers

We've spoken to independent double glazing installers around the UK to get the inside scoop on how to find the best company and ensure things run smoothly during and after the installation of the windows.

Which? members can log in to see all our tips, or if you're not a member, you can sign up for a trial to Which?.

RICS calculations

To arrive at these average prices, RICS uses cost data from its Building Cost Information Service (BCIS) database, where costs are collated from a variety of sources and analysed.

Material costs are based on the best trade prices from a range of suppliers across the UK, which are then benchmarked to reveal the best national average. Labour rates are based on the current Building and Allied Trades Joint Industrial Council wage agreement. It then uses this data in a standardised model of the average double glazed window and door types and sizes.

*In July 2014, we asked 2,872 Which? members questions about their experience of double glazing installation and companies.