Standard Specification for Asphalt-Coated Glass Fiber Base Sheet Used in Roofing
|Publication Date:||10 January 1998|
|ICS Code (Binders. Sealing materials):||91.100.50|
1.1 This specification covers asphalt impregnated and coated glass fiber base sheet, with or without perforations, for use as the first ply of the built-up roofing. 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.