Energy Efficient Window Glass Spacers

Window and glass spacers are the seals that sit between panes of glass in a window.  Over the years, the window manufacturing industry has seen quite a swing in terms of materials and technologies used to make window glass spacers.  As the push to create more energy-efficient home-building materials increases, more and more manufacturers are turning to new types of glass spacers to boost the “greening” of their products.

The material used to manufacture the glass spacer is one of the most important factors in whether a window is energy efficient.  Glass spacers play an important part in a window’s overall performance in this area, as they determine the amount of heat and cold that is able to pass through a window’s panes.

In terms of materials, there are several types of glass spacers, including aluminum glass spacers.  Aluminum glass spacers are one of the least energy-efficient types of spacer materials, and are being used much less frequently than in years past.  Aluminum glass spacers have been known to cause a number of issues in windows, such as glass fogging and moisture build up. Manufacturers are turning to other types of materials and technology, such as the intercept spacer.   Intercept spacers are considered to be much more energy-efficient, with a greater ability to lock in desired temperatures; however, they also cause quite a bit of noise to echo through the windows, making them a poor choice for certain situations.

The flexible spacer is one of the newest and most energy-efficient types of insulated glass spacers on the market today, and depending on the materials used in its manufacture, is often considered to be better at insulating than aluminum or intercept spacers.  There are many flexible spacer manufacturers, but in general, their products offer less build up of condensation, better U-values, warmer edge of glass temperatures, and excellent argon gas retention.  A flexible spacer is a type of swiggle spacer, which in addition to its environmentally-friendly profile, is also a quieter type of seal than aluminum or intercept seals. Wakefield offers a Flexible Spacer Application Table, designed to assist in the flexible spacer assembly.

Finally, the most efficient type of insulated glass spacer is generally considered to be the Super Spacer.  Super Spacers are a type of warm-edge glass spacer that uses all foam, no metal, and two different seals to insulate in a highly-efficient manner.  Besides their extremely efficient design, this type of insulated glass spacer is also extremely durable, and transmits little noise.