ASTM International - ASTM D2626-97b
Standard Specification for Asphalt-Saturated and Coated Organic Felt Base Sheet Used in Roofing
|Publication Date:||10 November 1997|
|ICS Code (Binders. Sealing materials):||91.100.50|
1.1 This specification covers asphalt-saturated and coated organic felt base sheet with fine mineral surfacing on the top side, with or without perforations, for use as the first ply of a built-up roof. When not perforated this sheet may be used as a vapor retarder under roof insulation.
1.2 The values stated in inch-pound units are to be regarded as the standard.