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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Storage and Application of Asphalt Roofing Shingles in Hot Weather

Introduction Asphalt shingles have been successfully used in various climate zones around the world, including in desert and tropical regions, for over one hundred years. Improved application efficiency and enhanced long-term shingle performance can be achieved by following the recommendations outlined below for hot weather storage and

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Recommendations for Installation of Asphalt Roofing Shingles in Cold Weather

Asphalt shingles have been used successfully in cold climates for over one hundred years. Improved application efficiency, and more importantly, enhanced long-term shingle performance, can be achieved by following the cold weather application recommendations outlined below: Be sure to follow the manufacturer’s installation instructions carefully, as most

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