Shingle Release Film

Asphalt shingles are manufactured with factory-applied adhesive sealant strips to enhance wind resistance in shingle roof systems. The sealant is typically an asphalt-based adhesive that adheres shingles together after installation.  This adhesive strip may be located on the front or back surface of shingles, depending on the

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Effects of Ponding Water on Low-Slope Asphalt Roofing Systems

Ponding water is defined as water that remains on a roof for 48 hours or longer. It may result from rain, melting snow/ice, or runoff from rooftop equipment.  The Asphalt Roofing Manufacturers Association is joined by other reputable organizations, such as the National Roofing Contractors Association and

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Application of Asphalt Shingles on Slopes Greater than 21:12

The maximum slope ARMA considers suitable for normal asphalt shingle application is 21:12, or 21” per foot. The use of asphalt shingles on slopes greater than 21:12 (e.g., mansard roofs) requires special application methods because such very steep slopes reduce the effectiveness of factory-applied self-sealing adhesives, especially

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Potential Effects of Contaminants on Modified Bitumen Sheet Materials

Introduction Roof membrane systems are intended to provide protection from natural elements, such as rain, snow, hail, and sleet. Systems that are properly designed, installed, and maintained should provide the user with long-term satisfactory protection from these elements. Some roof membrane systems, such as those installed on

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