ASTM WK43777

    Revision of D1970 / D1970M - 13 Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection

    (What is a Work Item?)

    Active Standard: D1970 / D1970M - 13a

    Developed by Subcommittee: D08.02 | Committee D08 | Contact Staff Manager



    WK43777

    1. Rationale

    This ballot originated as a revision of section 7.9 Self-sealability (Head of Water Test) to replace the nail seal test with a reference to ASTM D7349 Test Method for Determining the Capability of Roofing and Waterproofing Materials to Seal Around Fasteners. However, in the current version of D1970, section 7.9 includes tests that evaluate ability of the underlayment sheet to seal around nails, waterproof integrity of lap seams, and waterproof integrity after low temperature flexibility. Therefore, the original intention expanded to include separation of the three tests in section 7.9 into different sections along with provision of missing details for the waterproof integrity of lap seams and waterproof integrity after low temperature flexibility tests. The ballot item that follows consists of five sections. First, D7349 is added to the referenced documents section. Second, existing section 7.9 is replaced with a new section 7.9 that references D7349. Third, a new section 7.10 is added to provide a stand-alone test to evaluate waterproofing integrity of lap seams with additional test details. Fourth, a new Figure 1 is inserted to accompany new section 7.10. Finally, the portion of section 7.9 that deals with waterproof integrity after low temperature flexibility is moved into section 7.6 (Low Temperature Flexibility) and expanded to provide additional test details.


    Keywords

    ice dam protections; polymer-modifieds; self-adherings; steep roofings; underlayments;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    10-23-2013

    Technical Contact:
    Aaron Phillips

    Item:
    001

    Ballot:
    D08.02 (13-02)

    Status:
    Withdrawn From Balloting

    Item:
    002

    Ballot:
    D08 (14-02)

    Status:
    Ballot Item Approved as D1970/D1970M-2014 and Pending Publication