Standard Specification for
Self-Adhering Polymer Modified Bituminous Sheet Materials
Used as Steep Roofing Underlayment for Ice Dam
Protection1
This standard is issued under the fixed designation D 1970; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
a superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
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