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Sarang Bhawalkar, Ph.D.

Sarang Bhawalkar, Ph.D., is senior research associate of single-ply commercial roofing for GAF, Parsippany, N.J. He is responsible for single-ply roofing product and technology development. Bhawalkar received a doctorate degree in polymer science from the University of Akron, Akron, Ohio.

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A lasting impression

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The number and severity of hailstorms in the U.S. have increased significantly during the past decade, according to the National Oceanic and Atmospheric Administration. As a result, roofing manufacturer GAF, Parsippany, N.J., conducted ice ball tests to determine the impact resistance of TPO membranes. The tests reveal hail damage may extend below the membrane, indicating an entire roof system must be carefully selected for maximum hail resistance.

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