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ASTM D4601-98
- Standard Specification for Asphalt-Coated Glass Fiber Base Sheet Used in Roofing
- standard by ASTM International, 01/10/1998
- Publisher: ASTM
$23.00$46.80
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 may be used as a vapor retarder under or between roof insulation with solid top coating of asphaltic material.
1.2 The values stated in inch-pound units are to be regarded as the standard.