GSO ASTM D226/D226M:2026
ASTM D226/D226M:25
Gulf Standard
Current Edition
·
Approved on
14 April 2026
Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing
GSO ASTM D226/D226M:2026 Files
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GSO ASTM D226/D226M:2026 Scope
This specification covers asphalt-saturated organic felt used in roofing and waterproofing. Two types of asphalt-saturated felts are presented: type I - commonly called No. 15 asphalt felt, and type II - commonly called No. 30 asphalt felt. In the process of manufacture a single thickness of dry felt shall be saturated with an asphaltic saturant. The methods for the determination of openness of the perforations in saturated felts are presented in detail.
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