SPRI, the association representing sheet membrane and component suppliers to the commercial roofing industry, has released a final report on a joint study with the Department of Energy, entitled: Evaluating the Energy Performance of Ballasted Roof Systems.
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Cool Roofing & Energy Efficiency
New Ways of Defining Cool Roofs
Currently, cool roofs comply with the U.S Environmental Protection Agency’s (EPA) ENERGY STAR@ roofing products standards. In addition, U.S. states (such as California, through its Title 24 Energy Code [CEC]) prescribe cool roofs as part of the base case building… Read More
Evaluating the Energy Performance of Ballasted Roof Systems
It is well known that the mass of a ballasted roof can reduce peak roof temperatures and delay the heat flow into a building. Although ballasted roofs perform these “cool” functions, they do not meet the traditional requirement of high… Read More
Are Ballasted Roof Systems Cool
Andre Desjarlais reported on the results of a three-year study to determine if ballasted foods perform as well as white membranes with regard to energy savings. The study, which was cosponsored by SPRI, was conducted on the Roof Thermal Research… Read More
Cool Roofing A 10 Year Retrospective
In the mid-1980s, DuPont developed an energy calculator, which some manufacturers of light-colored membranes used as a marketing tool for their products. The high cost of light-colored membranes, though, was a substantial hindrance to widespread acceptance.
Cool Roofs and Thermal Insulation
“Cool roofs are defined by the Cool Roof Rating Council as a product with solar reflectivity of at least 0.70 and infrared emissivity of at least 0.75. In its 2005 revision, Title 24, California Energy Efficiency Standards for Residential and… Read More
Cool Roofing More Than a Black and White Debate Urban Heat Island Effect Trumping Insulation Argument
Energy efficiency is likely to be a simmering issue as August’s massive power outage promises to spark widespread debate over enacting an updated national energy policy. And while reflective, cool roofing surfaces remain a hot trend-especially in warm-weather climates-the goal… Read More
Moving to the Top of the Class
“As with the institutional and commercial buildings they protect, roofing systems have been in a continual state of technological advancement for the past 20 years. One prevalent example of this trend is the ongoing improvement of ethylene propylene diene terpolymer… Read More