With recent advances in window glass coating technology and stricter regional energy requirements, the Low-E coatings on windows manufactured today are much different than those manufactured just two or three years ago. Now, there are more Low-E glass options than ever before, making it increasingly difficult to choose the best replacement window for your next project. Which Low-E glass is best suited for your needs?

What is Low-E Glass?

Low-E stands for “low emissivity.” It is a thin layer (or several layers) of metallic particles applied to glass, allowing the glass to act like a sieve. Low-E glass filters out long wavelengths (heat) and allows visible light (short wavelengths) through.

How do Different Low-E Glasses differ?

By changing materials or by increasing the number of layers, manufacturers can control what wavelengths can and cannot penetrate your window. This allows you to choose a window which meets your specific needs.

How is Low-E different from Tinting?

Tinting is the addition of alloying materials to the glass, while Low-E is applied during the manufacturer of the glass and will have a similar appearance no matter the thickness of the glass, something that cannot be said for tinting. Also, tinting does not improve insulating value.

Can Solar Heat Gain be controlled using Low-E Glass?

Simply put, yes. Combined with the use of tinting, Low-E glass can control Solar Heat Gain. In fact, the best way to improve SHGC values is through the use of SHGC specific Low-E coatings.

Where can I learn more about Low-E Glass?

At Architectural Window Supply, our sales staff is both factory-trained and capable of offering you unparalleled insight and advice on your replacement window selection.

If you have any further questions about Low-E Glass or Replacement Windows or if you wish to schedule a free consultation, please contact Architectural Window Supply by calling 410-266-5254 or visit our website!

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Source: Clearing Up Low E Confusion