STP1422: A Detailing Method for Improving Leakage Prevention of Exterior Wall Weatherproofing

    Bateman, R
    Senior Staff Architect, Simpson Gumpertz & Heger, Inc., San Francisco, CA

    Pages: 16    Published: Jan 2003


    Abstract

    As generally or often practiced, building design and construction detailing of weatherproofing exterior building walls relies on two-dimensional (2-D) graphic representations of building components to indicate materials used for weatherproofing. However, these details which serve a variety of purposes for different users do not show all the relevant materials needed to construct a weatherproof exterior wall. The various users of construction details, e.g., contractors, builders and material installers, utilize these 2-D drawings as visual instruction guides for constructing and installing building components. Common construction details are intended to show various components that serve a variety of purposes, such as structural support, fire-resistance, energy control, acoustic control, aesthetic appearance and incidentally weatherproofing. Different contractors during construction will review the same detail to obtain information relevant to the purposes of their particular trade. Construction details usually identify a material or component by name and not by the trade that constructs it or the purpose it serves.

    Construction details, in addition to traditional uses, need to focus and emphasize weatherproofing materials and assemblies. Three-dimensional details should be used to show the junctures of exterior wall construction where weatherproofing installation is critical. Sequence (Step-by-Step) views should be used to show the layering of weather barriers and flashings in the proper order of installation. Enlarged cross-section details should be used to identify and show what weatherproofing materials are required and where they are installed.

    Keywords:

    building construction, details, weatherproofing, flashing, exterior walls, leakage prevention, design


    Paper ID: STP10929S

    Committee/Subcommittee: E06.55

    DOI: 10.1520/STP10929S


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