Low-E glass

Low-emissivity glass (or low-E glass, for short) can make homes and buildings more comfortable and energy efficient. Microscopic coatings of precious metals such as silver have been applied to the glass, which then reflects the sun’s heat. At the same time, low-E glass allows an optimal amount of natural light through the window.

When multiple lites of glass are incorporated into insulating glass units (IGUs), creating a gap between the panes, IGUs insulate buildings and homes. Add low-E glass, such as ClimaGuard® and SunGuard® coatings, to the IGU, and it multiplies the insulating ability.