1.1 This specification covers semidense mineral fiber siding (shingles, clapboards, and sheets) designed to provide the weather-exposed sidewall surfaces of buildings. These sidings are nailable with or without prepunched holes.

1.2 The values stated in SI units are to be regarded as the standard. The values stated in parentheses are provided for information only.

1.3 The following precautionary caveat pertains only to the test method portion, Section 9, of this specification: This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See 9.2.1.1 for a specific hazard warning.