1.1 This specification covers asbestos-cement roofing shingles, including accessories, designed to provide the weather-exposed surfaces on roofs of buildings. 1.2 Shingles supplied under this specification are of the foll This specification covers asbestos-cement roofing shingles, including accessories, designed to provide the weather-exposed surfaces on roofs of buildings. These shingles are classified according to method of application and shape: American method, Dutc