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Technical Interpretation Ballot -- NAFS-11

JDMG Technical Interpretation to NAFS-11 on Test Specimen Installation.

A ballot on a technical interpretation of AAMA/WDMA/CSA 101/I.S.2/A440 - 11 is now open for comment. This interpretation seeks clarification for the testing laboratories, when details in the manufacturers installation instructions conflict with the ability of the lab to properly conduct the testing, especially with regard to observation of perimeter water leakage into the wall cavity.

WDMA is developing this technical interpetation cooperation with AAMA and CSA, and all three organizations are balloting this item simultaneously. Even if you plan to submit a ballot to either of the other two organizations, please submit your ballot to WDMA as well, so that we can achieve the appropriate number of consensus responses.

Click here to download a copy of the technical iterpretation.

Click here to download the official ballot form.

Click here to download a copy of AAMA 2501, which is referenced by the proposed TI. (AAMA 2501 is not part of the TI.)

Click here to downoad two illustrations that help explain the TI. (The illustrations are not part of the TI)

Ballots are due by January 9, 2014. Please return your ballot prior to that time if possible.

If responding by email, please send you ballot to

If you have any questions, related to the ballot, please contact:

Jeff Lowinski
Vice President – Technical Services
330 N. Wabash Avenue, Suite 2000
Chicago, IL 60611
(312) 673-5891

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