A fully sealed 200x400mm double glazed unit costs £22.50
It costs around £14 to buy a 4mm thick pane of glass 200-450m2 in size
Compare double glazing prices and costs per window
Double glazed windows will vary in price depending on the size and type you choose. For example, the most efficient low-emissivity double glazed windows will be more expensive than regular double glazed windows. You should also take into account the price of window frames if you need them; wooden ones are more expensive than uPVC, for instance. Since double glazing can be expensive, many people choose to upgrade gradually, installing a few windows at a time – here are some guide prices:
A 530x780mm double glazed window costs around £275
A 980×1,340mm double glazed window costs £450
Secondary glazing involves placing a second pane of glass on the inside of the window frame. This is a great option for listed buildings and properties in conservation areas where double glazing is often not permitted. Secondary glazing will cost substantially less to install and will save you around £100 a year on your fuel bills:
uPVC horizontal-slide secondary glazing costs around £80 to £150 per frame
Hinged aluminium secondary glazing costs between £16 and £30 per frame
Double glazed sash windows
A 600x1000mm white uPVC, double glazed sash window costs around £167
A 600x1000mm timber double glazed sash window costs £209
Wooden double glazing window prices and costs
A double glazed oak framed windows of 750x850mm in size costs £111
A double glazed oak framed window of 1400x1600mm in size costs £468
Types of Double Glazing
Casement Windows
Casement double glazing windows are very popular with larger homes as these windows are designed to let in the maximum amount of light. The windows are generally hinged on one side and open rather like doors only they open away from the house rather than inwards towards it.
The advantages of casement windows are of course the huge amount of light you get along with good air circulation through the design of the window. They also come with other options such as dark frames which would suit an older property and leaded glass patterns for a more distinctive look.
Tilt and Turn Windows
These flexible windows have very practical uses thanks to their dual hinge system which allows the window to either open inwards from the side, like a traditional window or from the top, making the job of cleaning your windows a very simple process.
Families with small children will appreciate the security aspect that Tilt and Turn windows enjoy as you can tilt the windows just a fraction, to allow air to circulate but also preventing the window from being opened any wider by curious children.
Larger houses again suit Tilt and Turn windows for maximum light exposure and once again, these windows can be adapted to suit your home with a choice of frames and sizes.
Georgian Bar Windows
Georgian Bar windows offer a versatile double glazing type which is perfect for older properties or homes that like to have a distinctive look. There are many ranges to choose from including authentic designs that make use of end milling for a seamless look, as well as a simple range.
The features of Georgian Bar windows will result in bars of the windows that are chosen to perfectly complement the window frames. In doing so they then look as though they are part and parcel of the window framework, resembling the patterns that were common on authentic Georgian houses which is why the Georgian Bar windows are so popular within older homes.