ASTM D227/D227M is the ASTM standard that defines the Standard Specification for Coal-Tar Saturated Organic Felt Used in Roofing and Waterproofing. It provides a clear technical reference for a material commonly used in built-up roofing and waterproofing systems, helping buyers, specifiers, and manufacturers align on expected product characteristics. By setting a shared specification, the standard supports more consistent material selection, procurement, and quality expectations in projects where dependable felt performance matters.

ASTM D227/D227M standard overview

This ASTM standard focuses on coal-tar saturated organic felt intended for roofing and waterproofing applications. It serves as a product specification rather than a broad design guide, helping define what the material should be like for use in these systems. ASTM D227/D227M is useful when a project requires a recognized reference for evaluating material conformity, comparing supplier offerings, or documenting compliance in technical submittals. Its role is to support consistency in a material that may be used as part of a layered roofing or waterproofing assembly.

Where is ASTM D227/D227M used?

ASTM D227/D227M is commonly used in roofing and waterproofing work where coal-tar saturated organic felt is specified as part of the system. It is relevant to manufacturers, distributors, contractors, and inspectors who handle material selection, receiving checks, and specification review. The standard may also be referenced during procurement or project documentation when a building envelope assembly calls for a defined felt product. Its use is most direct in workflows centered on material compliance and installation planning.

Practical importance of ASTM D227/D227M

The practical value of ASTM D227/D227M is in helping reduce ambiguity around a traditional roofing and waterproofing material. When a project references this specification, it gives all parties a common basis for product evaluation and acceptance. That can support quality control, improve procurement accuracy, and make compliance checks more straightforward. For technical teams, the standard helps confirm that the selected felt is aligned with the intended specification before it enters a roofing or waterproofing assembly.

• Coal-tar saturated organic felt specification
• Roofing and waterproofing material reference
• Supports product comparison and compliance review
• Useful for procurement and quality control