ASTM D4990 - 97a(2020)
Standard Specification for Coal-Tar Glass Felt Used in Roofing and Waterproofing
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Abstract
This specification covers glass felt impregnated with coal tar intended to be used with coal tar pitch in the construction of built-up roofs and waterproofing systems. The felt shall be a thin, porous sheet of uniformly distributed glass fibers, with or without the addition of reinforcing stranded glass yarns, and bonded with a water-resistant resinous binder. Longitudinal and transverse breaking strength, pliability, width, area, net dry mass, parting agent and stabilizer content, moisture content, desaturated mass, bituminous saturant (coal tar) content, and ash content are among the property requirements to which the glass felts should conform to.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1. Scope
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 D450/D450M in construction of built-up roofs and in the construction of 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.
1.3 The following safety hazards caveat pertains only to the Test Methods portion, Section 8, of this specification: 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D146/D146M Test Methods for Sampling and Testing Bitumen-Saturated Felts and Woven Fabrics for Roofing and Waterproofing
D450/D450M Specification for Coal-Tar Pitch Used in Roofing, Dampproofing, and Waterproofing
D1079 Terminology Relating to Roofing and Waterproofing
ICS Code
ICS Number Code 91.100.50 (Binders. Sealing materials)
UNSPSC Code
UNSPSC Code 30121501(Coal tar); 30151505(Roofing membranes)
Referencing This Standard
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DOI: 10.1520/D4990-97AR20
Citation Format
ASTM D4990-97a(2020), Standard Specification for Coal-Tar Glass Felt Used in Roofing and Waterproofing, ASTM International, West Conshohocken, PA, 2020, www.astm.org
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