Fenestration Review

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AAMA releases updated rain resistance specifications


December 10, 2012
By Patrick Flannery


Topics

Dec. 6, 2012 — AAMA 520-12, "Voluntary Specification for Rating the Severe Wind-Driven Rain Resistance of Windows, Doors and Unit Skylights" has been released by the American Architectural Manufacturers Association. The specification provides an optional rating of the ability of fenestration products to resist severe wind-driven rain.


Dec. 4, 2012 — AAMA 520-12,
"Voluntary Specification for Rating the Severe Wind-Driven Rain Resistance
of Windows, Doors and Unit Skylights" has been released by the American
Architectural Manufacturers Association
. The specification provides an optional
rating of the ability of fenestration products to resist severe wind-driven
rain.

AAMA 520-12 is based on a rapidly pulsed pressure differential method,
recognizing that conditions encountered during tropical storms, hurricanes or
severe thunderstorms are not static. In addition, the procedures and equipment
required to perform the specified tests are provided. The document details the
testing apparatus used, defines test specimens and installation, and describes
test methods utilized, as well as stating what information the test report
should include.

“The specification is applicable for use in testing and comparative rating of
windows, doors and skylights that are used in areas which may be subjected to
severe wind-driven rain,” says Ken Brenden, AAMA’s technical director. “Updated
from the 2009 document, AAMA 520-12 contains a new addendum which provides
additional guidance regarding required water collection.”

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AAMA 520-12 references important industry documents which include AAMA/WDMA/CSA
101/I.S.2/A440-11, "North American Fenestration Standard for Windows,
Doors, and Skylights" (NAFS) and ASTM E2268-04(2011), "Standard Test
Method for Water Penetration of Exterior Windows, Skylights and Doors by Rapid
Pulsed Air Pressure Difference."

AAMA 520-12, "Voluntary Specification for Rating the Severe Wind-Driven
Rain Resistance of Windows, Doors and Unit Skylights" is available for
AAMA members to download at a cost of $10. Non-members may purchase the
document at a cost of $30 for download. The specification is also available for
purchase on CD and hardcopy. To order AAMA 520-12, visit AAMA’s Publication Store.

Related
Links
http://pubstore.aamanet.org/pubstore/ProductResults.asp?cat=0&src=520-12