Low-E Glass

A Moen Insulglass double glazed unit with a low E product added will further enhance the performance of the unit. Low E glass has been developed specifically for the use in double glazed units.

Low E glass will:

Keep you warmer in the winter increasing the performance of a standard clear double glazed unit
Keep you cooler in the summer by transmiting less solar energy than a standard clear double glazed unit
Reduce UV energy entering the home reducing fabric fading
Allow a large amount of visible light keeping your home a bright and comfortable place to live

Low ‘e’ Glass—The insulation improver

The term low ‘e’ stands for low emissivity. The difference between ordinary clear glass and low ‘e’ glass is a special metallic or oxide coating on one side of the glass known as the low ‘e’ or low emissivity coating.

This coating improves the performance of a double glazed unit by reducing the transfer of heat or cold through the glass.

How does it work?

The sun generates warmth by emitting short wave radiation. This short wave radiation passes through the glass and warms up the interior of the building by being absorbed into the fabric of the structure (curtains, carpets, furniture, walls etc.) and the energy is transformed into long wave radiation. As heat always moves from hot to cold it’s means of escape is normally back out through the glass, but the low ‘e’ has the ability to reflect these long wave radiations back into the building. This results in a lower wintertime ‘u’ value (the measurement of heat loss through a solid object) and a more comfortable home along with lower heating costs.

Conversely, in summer the glass has the ability to reflect any long wave heat waves back outside thus reducing the heat transfer through the glass.

In conclusion, if low ‘e’ glass is used in double glazing the occupants of the dwelling or building will enjoy a more comfortable environment with cost savings on heating and cooling and also help in reducing green house gas emissions.

For information on Low E glasses and their performance characteristics refer to the moen glass specifier