STP1538: Thermoplastic Polyolefin Roof Membranes Exposed in the Western United States for Seven Years

    Delgado, Ana H.
    National Research Council of Canada, ON,

    Ludwig, Michael
    Building Envelope Technology and Research, Seattle, WA

    Elliot, Stephen
    Building Envelope Technology and Research, Seattle, WA

    Barnhardt, K. C.
    Quality Roofing and Sheet Metal, Bozeman, MT

    Chapman, Chuck
    Tecta America Arizona, Glendale, AZ

    Ober, Randy
    Carlisle Syntec Inc, Carlisle, PA

    Moskowitz, Steve
    Dow Roofing Systems (Stevens Roofing Systems),

    Wacenske, Dwayne
    Firestone Building Products, Indianapolis, IN

    Carlson, Jim
    Building Envelope Technology and Research, Seattle, WA

    Paroli, Ralph M.
    National Research Council of Canada, ON,

    Pages: 41    Published: Jan 2011


    Abstract

    The Western States Roofing Contractors Association (WSRCA), thermoplastic polyolefin (TPO) roofing manufacturers, and the National Research Council Canada started a TPO Weathering Farm Project in 2000 to examine weathering characteristics of TPO roof membranes by exposing them to various weather conditions of four distinctly different climatic regions in the Western United States. The goal was to provide technical and performance information to the Western States Roofing Contractors Association membership, and the North American roofing community at large, regarding TPO roof membranes' attributes, performance properties, and resistance to weathering. The results are applicable to other regions in North America as the roofs are in four distinctive climate zones (hot and dry, hot and humid, cold and damp, moderate with wet and dry periods). The results and laboratory analyses (thickness, DMA, FTIR, TG/DTG) performed on the TPO roof membranes that were exposed for seven years in the various conditions will be summarized.

    Keywords:

    TPO, WSRCA, NRC, DMA, FTIR, TG/DTG, AK, Las Vegas, Seattle, TX, thickness, tensile strength, glass transition, roof membrane, thermoplastic polyolefin, Western State Roofing Contractors Association, WSRCA, weathering, single-ply roofing


    Paper ID: STP49689S

    Committee/Subcommittee: D08.03

    DOI: 10.1520/STP49689S


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