What is Low E Glass?
Definition of Low E Glass in Construction Low E is a descriptive term, referencing the reduction of the emissivity of the glass. The lower the emissivity of the glass, the less radiation is allowed to pass through the glass, thereby improving the overall thermal performance of the glass. Normally, low E glass is manufactured by installing a light layer of metallic oxide on the surface of the glass. This layer is virtually invisible to the eye and also reduces the overall heat gain of the glass. Low E glass has become a design standard with various manufacturers producing different grades of low E glass and devoting substantial research and design money to improve the glass performance regarding reduction of emissivity. The developing chemistry and development of new and better glass will result in increased energy savings as well as reduction in the conductivity of the glass to allow energy to escape the interior spaces.