Thermal Insulation

Thermally insulating glass for windows and façades, also known as “low-E” (for low-emissivity) glass, usually forms the inner pane of an insulating glass unit (IGU). A transparent metallic coating reflects heat back into the room rather than allowing it escape through the windows. At the same time, low-E glass allows solar heat to pass into a building and warm the interior (this is known as “passive solar heat gain”).

Recent regulations call for the use of energy-efficient products to cut CO2 emissions and protect the environment. Thermally insulating double-glazing is a way to meet national government targets and cut domestic fuel bills.

Thermally insulating glass can be one of several desirable features that are combined in multifunctional glazing. Other options include low maintenance, solar control, noise reduction, decorative glass and enhanced safety and security.