Double glazing is the term used to describe two panes of glass within a frame in place to reduce heat loss and to exclude external noise. All homes lose heat via their external windows but by having energy efficient double glazing, you reduce this and help make your property warmer. The space between the two panes of glass can be filled with a vacuum or a gas such as argon or krypton. Both of these methods can help increase the measure of thermal resistance, known in the industry as...