ASTM D4990
Standard Specification for Coal-Tar Glass Felt Used in Roofing and Waterproofing
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About This Item
ASTM D4990 is the ASTM standard that covers the Standard Specification for Coal-Tar Glass Felt Used in Roofing and Waterproofing. It provides a technical basis for identifying and evaluating a glass felt product intended for protective building applications where roofing and waterproofing performance matter. By defining a consistent specification, ASTM D4990 helps buyers, suppliers, and specifiers compare materials with greater confidence and align product expectations with a recognized standard.
ASTM D4990 standard overview
This standard focuses on coal-tar glass felt as a material used in roofing and waterproofing systems. As a specification, it is intended to establish a common framework for product requirements and acceptance criteria rather than describe installation methods. ASTM D4990 is useful when a project needs a clear technical reference for material quality, consistency, and compliance. It supports communication between procurement, testing, and quality control teams working with roofing and waterproofing products.
Where is ASTM D4990 used?
ASTM D4990 is commonly used in contexts involving coal-tar glass felt selected for roofing and waterproofing applications. It may be referenced by manufacturers, inspectors, purchasers, and project teams responsible for evaluating materials before use in built-up roofing or related moisture-protection assemblies. The standard is most relevant wherever a specified glass felt product must meet documented requirements for a roofing or waterproofing system. In practice, it helps keep material selection and verification aligned with the intended application.
Practical importance of ASTM D4990
The practical value of ASTM D4990 lies in helping standardize expectations for a specialized roofing and waterproofing material. It supports compliance efforts by giving stakeholders a clear reference for specification-based purchasing and product review. For quality control, it can reduce ambiguity when comparing suppliers or verifying that a delivered material matches project requirements. Using the standard may also help lower risk by improving consistency in material selection and evaluation across jobs and organizations.
- Coal-tar glass felt specification
- Roofing and waterproofing use
- Material quality and consistency
- Compliance and procurement reference
- Publication Date: 2020-05-15
- Publisher: ASTM
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