Why Choose Low-E Glass
Low-E Glass
Low-E glass refers to glass with a low emissivity coating. It reduces heat gain or loss by reflecting long-wave infrared energy (solar heat), decreasing the U-value & solar heat gain and improving the energy efficiency of the glazing. Because of its relative neutrality in appearance and energy efficiency, low-E glass is widely used in residential and commercial buildings. It is expected to increase in usage in the coming years.
There are two silver layers within the coating structure of double silver Low-E glass. While maintaining the same visible light transmittance, it has a lower shading coefficient than single silver Low-E glass. In other words, it filters the sunshine as an excellent lighting source to a more significant extent. It provides a solution to energy efficiency in designing high transparency architectures.
How Does Low-E Glass Work?
The radiation coming from your heating system is longwave radiation. This type of radiation should be contained in your room as best as possible, while the radiation from the sun should be shielded and reflected outside.
Winter/Cooler Months
The sun’s energy is “SHORT WAVE RADIATION”, which passes through the window and is absorbed by the carpet, furniture, etc. The energy is then transformed into longwave radiation. The longwave radiation wants to flow from warm to cool. Naturally, it will try to escape from the glass. At night the heat produced from radiators, wood stoves, etc., will also want to run through the glazing. The Low-E coating prevents this when the radiant room-side heat is reflected into the building. This results in a lower winter U-value. The higher the indoor glass temperature, the better the product is for comfort for winter convenience.
Summer/Warmer Months
The Low-E coating manages the sun’s heat in the summer by reducing the amount of heat transferred through the window in the summer. The Low-E layer filters the sun’s short-wave radiation, which reduces the amount of solar heat gain into your building. The lower the indoor glass temperature, the better the product is for comfort for summer convenience.
