ERA | EPDM Roofing Association

News Release

Oak Ridge National Laboratory: 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 solar reflectance. This is one of the criteria set out by the Environmental Protection Agency (EPA) and other organizations in order for a roof to be “cool.”

Author: Andre O. Desajarlais

Source: SPRI and Oak Ridge National Laboratory

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