Historical

ASTM D4601-98

Standard Specification for Asphalt-Coated Glass Fiber Base Sheet Used in Roofing

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.

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ASTM International [astm]

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