Glass

Make sure your windows in Fife have the most energy-efficient glass fitted to save you money and protect you against the elements.


Our standard double glazed sealed units are made up of Planitherm glass, argon gas filled cavity and warm edge spacer bar to give a centre pane U-Value of 1.1, which is well below current building regulations. Other glass options are available.

What is a U-Value?

A U-Value is the measurement of the rate of heat loss through a material. To keep your energy costs down and to make sure your home stays warm even in the coldest winter, window designers aim for the lowest U-Values possible. The lower the U-Value, the greater the thermal efficiency.


A single glazed window with standard glass will have a typical centre pane U-Value of 5.6, while a double glazed window with standard glass will have a U-Value of 2.8. This shows that the double glazed window is more efficient at preventing heat loss because of its lower U-Value.


Building regulations now specify that U-Values must be 1.6w/m²K or lower. This means that any new windows will need to comply with these regulations.


If you’re planning to buy new windows in Fife then you’ll need to make sure that you’re purchasing energy-efficient windows fitted with Planitherm, Slimlite or other energy-efficient glass. Look for windows that have argon gas filled cavities to make sure your windows comply with building regulation requirements.

Click here to visit Planitherm


At Natural Windows, we only use the most energy efficient glass in our products, so you can be sure that all your windows in Fife comply with the required standards. But we never compromise on looks, so not only will your Planitherm or Slimlite windows keep your energy bills down, they’ll look great too.


To find out more about our windows in Fife or to discover more about the efficiency regulations, contact us and talk to one of our friendly advisers.

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You can visit our showroom:

Monday to Friday from 9am to 5pm

(or by appointment out with these times).