Low-E Glass Upgrade

What Is Low-E Glass?

Low-E glass, short for low-emissivity glass, contains a very thin, nearly invisible coating designed to help control the transfer of heat through the glass. This specialized coating reflects certain types of heat while still allowing natural light to pass through, helping improve the overall energy performance of the window.

During colder weather, Low-E glass can help reduce the amount of indoor heat that escapes through the window. This can support more consistent interior temperatures and reduce unnecessary heat loss around glass areas. During warmer weather, the coating can help limit unwanted heat transfer from outside, making it easier to maintain a more comfortable indoor environment.

It may also reduce strain on heating and cooling systems, improve year-round energy efficiency, and enhance comfort without changing the window’s original appearance or character.

Modern Low-E insulated glass units can provide better year-round thermal performance than many older standard glass systems. They may also help reduce ultraviolet exposure, which can contribute to fading of flooring, furniture, curtains, artwork, and other interior materials over time.

Low-E glass is available in several configurations depending on the existing window system and project requirements. Options may include double-pane Low-E IGUs, triple-pane Low-E IGUs, Low-E glass with argon gas, tempered Low-E, laminated Low-E, and other Low-E safety glass configurations where required. Availability depends on the existing window design and compatible glass specifications.

One of the key advantages of Low-E glass is that upgrading the glass does not always require replacing the entire window. If the existing frame, sash, hardware, and operating components are still in good condition, Low-E glass can often be installed as part of a replacement insulated glass unit without replacing the entire window frame, helping preserve the existing window system while improving its performance.