Four Unique Styles To Choose From
Our Low-emission glass (Low-E glass) is a available in 4 unique styles. Low-E glass clear, but has a microscopic coating of metal oxide. This allows the sun's heat and light to pass through the glass into the building. At the same time, it blocks heat from leaving the room, reducing heat loss. Low-E glass coatings work by reflecting or absorbing IR light (heat energy). The thickness of the Low E coating and the position in the window (#2 or #3 surface) dictate how the window will perform.
How does it benefit during the winter?
In the winter, Low-E glass is designed to work in two ways: First, it transmits the sun's short-wave energy. This means it allows the sun's energy (which provides visible light and invisible heat) in through the windows, which helps heat a home in winter. Second, once the sun's heat is inside a home, the coating works to reduce the amount of heat transferred through the glass to the colder exterior. As a result, less of this heat (as well as the heat produced by a furnace) is transmitted back through the glass to the outside, helping to reduce heating bills in winter.
How does it benefit during the summer?
In the summer, heat enters a house through ordinary clear glass to the cooler interior. This happens in two ways: First, through direct short-wave sunlight; and second, by long-wave radiation generated by sidewalks, driveways, and other elements which have absorbed heat from the sun. Low-E glass effectively reduces this unwanted radiant heat gain by reflecting a significant portion of long-wave radiation back to the outside, helping to keep homes cooler and reduce cooling costs in summer.
What are its other benefits?
Low-E glass helps to reduce condensation on glass. The inside surface temperature of the glass is warmer. The differences can be dramatic. Imagine a cold night with an outside temperature of 0 degrees and a 15 mph wind. The inside temperature of a single pane window would be approximately 26 degrees. Regular double pane glass might register 35 degrees. Hard coat Low-E glass would be near 49 degrees.