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 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 is suitable for use as a vapor retarder, with a solid mopping of asphaltic material, under roof insulation or between multiple layers of roof insulation.
1.2 The values stated in inch-pound units are to be regarded as the standard.