1.1 This specification covers asphalt-saturated organic felt for use as an underlayment with steep slope roofing.
1.2 The objective of this specification is to provide a finished product that will lie flat and resist wrinkling, puckering, and shrinking when left exposed to the sun, rain, frost, or dew for a period of two weeks after application.
1.3 The values stated in SI unts are to be regarded as the standard. The values given in parentheses are for information only.
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