ASTM C1305 - 08

    Standard Test Method for Crack Bridging Ability of Liquid-Applied Waterproofing Membrane

    Active Standard ASTM C1305 | Developed by Subcommittee: D08.22

    Book of Standards Volume: 04.04


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    Significance and Use

    This test method is used to indicate a waterproofing membrane's ability to maintain its integrity while bridging a preexisting crack in the substrate at low ambient temperatures, when the membrane is least likely to be flexible.

    1. Scope

    1.1 This test method covers a laboratory procedure for determining the ability of a waterproofing membrane to bridge a crack in the substrate.

    1.2 There are no ISO standards similar or equivalent to this ASTM standard.

    1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C33 Specification for Concrete Aggregates

    C150 Specification for Portland Cement

    C717 Terminology of Building Seals and Sealants

    C1375 Guide for Substrates Used in Testing Building Seals and Sealants


    ICS Code

    ICS Number Code 91.100.50 (Binders. Sealing materials)

    UNSPSC Code

    UNSPSC Code 30151505(Roofing membranes)


    DOI: 10.1520/C1305-08

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