M00000139
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ASTM D4990-97a(2005)e1 Standard Specification for Coal Tar Glass Felt Used in Roofing and Waterproofing
standard by ASTM International, 03/01/2005
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Availability date: 07/24/2021
1.1 This specification covers glass felt impregnated with coal tar intended to be used with coal tar pitch conforming to the appropriate requirements of Specification D 450 in construction of built-up roofs and in the construction waterproofing systems.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.