【国外标准】 Standard Specification for Coal Tar Roof Cement, Asbestos Containing (Withdrawn 2014)

This specification covers asbestos containing coal tar roof cement suitable for trowel application in coal tar roofing and flashing systems. Coal tar roof cement shall consist of a processed coal tar base, volatile solvents, and mineral fillers including asbestos fibers, mixed to a smooth, uniform consistency. The composition of coal tar roof cement shall conform to the requirements prescribed for water content, nonvolatile matter content, and insoluble matter content. Coal tar roof cement shall meet the performance requirements specified for: (1) uniformity, (2) workability, (3) behavior at the specified temperature, (4) adhesion to wet surfaces, and (5) flash point. Conformance to the composition and performance requirements shall be determined by the specified test methods.1.1 This specification covers coal tar roof cement suitable for trowel application in coal tar roofing and flashing systems. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 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.