Introduction of Insulated Glass

Insulating glass (IG) is separated by two or more glass panes through a vacuum or gas filled space to reduce part of the enclosure through which heat transfer passes. Insulating glass for windows A is commonly referred to as double glazing or double pane windows, triple glazing or triple pane windows, or quadruple or quadruple pane windows, depending on how many panes are used for their construction.

The insulating glass unit (IGU) is usually made of glass with a thickness of 3 to 10 mm. Thicker glass is used for special applications. Laminated or tempered glass can also be used as part of the structure. Most cells produce the same thickness as glass in both panes, but special applications such as acoustic attenuation or safety may require different thicknesses of glass to be incorporated in one cell.