Frequently Asked Questions » What Does Low-E Glass Mean?
What Does Low-E Glass Mean?
Low-Emittance (Low-E) Coating is a microscopically thin, virtually invisible, metal or metallic oxide coating deposited on a window glazing surface primarily to reduce the U-factor by suppressing radiative heat flow. Typical low-E coatings are transparent to the solar spectrum (visible light and short-wave infrared radiation) and reflective of long-wave infrared radiation. The primary benefits of installing Low-E windows and doors include:
- Reflects outside heat in sunny weather.
- Keeps heat from escaping the home in cold weather.
- Blocks 95% of harmful UV rays to resist fading interior furnishings.
