1.1 This specification covers finished treated (coated) woven-glass fabrics coated with either asphalt, coal-tar pitch or an organic resin compatible with the roofing, waterproofing, or other usage as specified by the purchaser.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.