For example, the double glazed units can be filled with argon or krypton gas in the gap between the panes; this prevents a lot of heat (or cold) radiating from one side of the window to the other.

• Read more: www.localglazingprices.co.uk/double-glazing-price-guide

You may not think so, but now may actually be a good time to get quotes for sash windows prices from www.compareglazingprices.co.uk or those new front doors that you have been meaning to get around to.