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    Development of Alternate Test Methods for Sealant Performance with Exterior Insulation and Finish Systems

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    For years, the EIFS industry has relied on Adhesion-in-Peel Testing (ASTM C 794) for determining both the compatibility and acceptability of sealants used in EIF Systems. Although peel adhesion is an important parameter, it does not represent field conditions. Therefore, it was necessary to develop a standard test method which addressed EIFS in a working joint. A method was developed which closely parallels ASTM C 1135 — Standard Test Method for Determining Tensile Adhesion Properties of Structural Sealants. The proposed method is currently under consideration by the ASTM C 24.20.12 Task Group where round robin testing is underway.

    This paper will focus on the proposed test method. It will present data obtained for various sealants and coatings that have been tested by this method, enabling one to determine which sealant and coating best suits the existing need. In addition, the paper will present guidelines for detailing terminations in an EIF System as recommended by the EIFS Industry Members Association (EIMA).


    EIFS, EIMA, Sealants, Polyurethane, Silicone, Modulus, Elongation

    Author Information:

    Preston, WM
    Staff Engineer, Dryvit Systems, Inc., West Warwick, Rhode Island

    Committee/Subcommittee: E06.58

    DOI: 10.1520/STP39217S