Low E glass

What is Low E glass?

Low E glass meaning 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.


reference: Glossary – U.S. Energy Information Administration (EIA)