Glass treated with thin transparent coatings of metal oxide and silver for improved thermal performance. It reduces the penetration of ultraviolet rays to minimize fading of carpet and draperies.
A very fine thin transparent multi-layer coating between panes. It reduces the radiant heat transfer while allowing visible sunlight to still enter the room. In the summer it filters out the sun helping to keep cooling costs down. In the winter it aides in keeping the heat in and lowering heating costs.
Low E stands for low emissivity. The lower the emissivity, the higher the percentage of long-wave radiation blocked, thereby improving thermal performance. Low E glass is coated with a thin microscopic, virtually invisible metal or metallic oxide layer. The primary function is to reduce the U-Value by suppressing radiative heat flow. A secondary feature is the blocking of short wave radiation to impede heat gain.
Low-emission glass reflects up to 90% of long-wave radiation, which is heat, but lets in short-wave radiation, which is light. Windows are glazed with a coating that bonds a microscopic, transparent, metallic substance to the inside surface of the double-pane or triple-pane windows.
Glass that is treated with an energy-efficient coating to block the harmful ultraviolet rays of the sun.
a transparent coating applied to a glass surface to separate long wave (heat) energy and short wave (light) energy. The long wave (radiant heat you feel) is reflected back to the heat source (outside in summer, inside in winter). The short wave (light) is allowed to pass through the coating
Low E stands for “low emissivity,” a microscopic coating on glass that helps keep your house warmer in the winter and cooler in the summer.
Polaritic coating applied to the surface of glass that reflects long wave energy.
Glass with a transparent metallic oxide coating applied onto or into a glass surface. The coating allows short-wave energy to pass through but reflects long-wave infrared energy which improves the U-value.
Microscopically thin, virtually invisible, metal or metallic oxide layers deposited on a window or skylight glazing surface primarily to reduce the U-factor by suppressing radiative heat flow. A typical type of low-E coating is transparent to the solar spectrum (visible light and short-wave infrared radiation) and reflective of longwave infrared radiation.
GLASS, USED IN WINDOWS AND SKYLIGHTS, WHICH HAS SPECIAL COATINGS DESIGNED FOR TERRIFIC INSULATING PROPERTIES, USUALLY SUPERIOR TO THAT OF TRIPLE GLAZED GLASS.
Low emissivity means to have a low rate of emitting absorbed radiant energy. Low E glass is a glazing product with an ultra thin metallic coating on one side which not only limits the amount of radiant energy radiated through the glass but actually redirects the energy back toward the source. The low e coating is typically very delicate and care must be used in handling and glazing this product.