This is the second edition of CSA A123.17, Asphalt glass felt used in roofing and waterproofing, which is an adoption, with Canadian deviations, of ASTM (American Society for Testing and Materials) Standard D 2178-97a, Standard Specification for Asphalt Glass Felt Used in Roofing and Waterproofing.
It supersedes the previous edition, published in 1963 under the title Asphalt-Saturated Felted Glass-Fibre Mat for Use in Construction of Built-Up Roofs.
This specification covers glass felts impregnated to varying degrees with asphalt intended to be used with asphalts conforming to the requirements of Specification D 312 in the construction of built-up roofs, and with asphalts conforming to the requirements of Specification D 449 in the construction of waterproofing systems.
The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
This standard does not purport to address all of the safety concerns, if any, 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.