Low E Coatings Increase Window Energy Efficiency
A Low E window coating is a microscopically thin, virtually invisible, metallic layer that is deposited on the glass surface. The primary benefit of this coating is to suppress the radiant heat flow through the window. This gives the window a lower U-factor. The lower the U-factor, the better the insulation value of the window.
How Low E Window Coatings Work
Low E glass coatings filter out longwave radiation from the sun. This reduces solar heat from penetrating the window, keeping your home cooler.
In the winter months, a Low E coating keeps the warmth of your home from escaping through the window, helping keep your home warm.
Two Types of Low E Window Coatings