ASTM WK64263

    New Practice for Evaluating Performance of Cladding Attachment Systems

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    Developed by Subcommittee: C16.30 | Committee C16 | Contact Staff Manager



    WK64263

    1. Scope

    With the evolving requirements for energy efficient buildings, including increasing demand for enclosures to provide extremely high levels of thermal resistance, many new cladding attachment systems have been developed to help minimize thermal bridging. Proof of performance for these systems has been primarily via computer modeling however no standards exist to regulate the use of these tools. The performance claims being made on these types of system are varied and do not serve the industry, code officials, or consumers with intuitive and comparable performance information. This task group intends to develop a standard practice to standardize comparisons of the performance of these types of systems. The intended approach would be: 1)Specify standard wall constructions representing common base systems and suitable for comparing different cladding attachments. 2)Specify testing methodologies for determining performance. 3)Specify computer modeling details for determining performance. 4)Specify requirements for validation of computer modeling results with physical test performance. The initial performance being discussed would be the thermal performance (U-Factor), however, other properties, such as structural performance would be desirable in the future.


    Keywords

    cladding attachment, continuous insulation, thermal bridging, thermal transmittance, thermal resistance, u-factor, u-value, r-value, thermal performance

    Rationale

    Proof of performance for these systems has been primarily via computer modeling however no standards exist to regulate the use of these tools. The performance claims being made on these types of system are varied and do not serve the industry, code officials, or consumers with intuitive and comparable performance information. It is intended that manufacturers and code agencies would be able to use this standard to fairly compare systems.

    The title and scope are in draft form and are under development within this ASTM Committee.

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    Work Item Status

    Date Initiated:
    07-09-2018

    Technical Contact:
    Michael Thoman

    Status:
    Draft Under Development