Industry News

Cold Liquid-Applied Membrane for Roofing, Waterproofing

Architects and other commercial roof specifiers can now protect and accent flat and low-slope roofs with a new Kemperol cold liquid-applied membrane roofing and waterproofing system from Kemper System America, Inc. 

The Kemperol 2K-FR system, which debuted at the 2019 International Roofing Expo, is derived from the group’s successful, bright white Kemperol Reflect 2K-FR resin system. 

‘Thru Color’ Benefits

Kemperol 2K-FR is fully reinforced and features “thru color,” according to the company. As such, it does not need a color topcoat because the resin is tinted throughout. Designed for extended life on new or existing low-slope roofs, the Class A fire-rated, odor-free polyurethane resin (PUR) system is available in stone gray or patina green. 

“The choice of color for low-slope roofs should not just be black or white,” said Jim Arnold, director of product development at Kemper System. “A Kemperol thru-color membrane roof can lift the overall aesthetics of a building whether some or all of the roof is visible. The color can also provide visual relief on re-roof projects, such as dark built-up roofs [BUR] that were in place for many years.”

Arnold noted that there is no topcoat to chip or flake off, and the one-step application can help contractors hold the line on installation costs.

Alternatives to White Roofs

While white roofs are generally preferred in warmer regions where they can help lower building cooling requirements, the overall benefit from energy savings diminishes and becomes undefined further north, Arnold said. 

In addition, high reflectivity may not be desirable for certain projects or areas. For example, some roof areas may be in shadows most of the day — whereas with the roof’s sunny areas, glare can be intense on floors immediately above. Reflected glare can also contribute to excess heat buildup, which can make occupants uncomfortable and add to air conditioning costs. Reducing glare can be especially important for hospitals, schools, and offices. 

For roofing projects that can benefit from a high Solar Reflectance Index (SRI) rating, Kemper System provides two cool-roof membrane systems. In addition, the company offers two elastomeric-based products which can be applied by brush, roller, or spray. Further details on these systems and products can be found at the company’s website.

For more information, contact: Kemper System, (800) 541-5455,