AAMA Releases New, Voluntary Test Method for Thermal
Transmittance and Condensation Resistance of Windows, Doors and
Glazed Wall Sections
April 17, 2009
AAMA 1503-09, a voluntary test method for windows, doors and glazed
wall sections, has been released by the American Architectural Manufacturers
Association (AAMA). The test method, titled Voluntary Test Method
for Thermal Transmittance and Condensation Resistance of Windows,
Doors and Glazed Wall Sections contains the latest improvements
evolving from over 25 years of thermal testing by AAMA accredited
The test method measures the thermal characteristics of windows,
doors and glazed exterior wall sections under steady-state conditions.
Specifically, measurements and calculations made using this procedure
can be utilized to determine the thermal transmittance (air-to-air)
or U-Factor, the air infiltration rate and/or the condensation resistance
For AAMA 1503-09, calibration techniques were changed to reflect
the significant improvement in window thermal performance over the
years and sealing against potential air infiltration has been improved.
Other calibration and test techniques were also refined. In addition,
a component was added to allow for testing of multiple glazing options
via AAMA's 1505 glass library to provide simple, cost-effective
and fully-tested U-factor and condensation resistance factor (CRF)
values for the industry.
The Voluntary Test Method for Thermal Transmittance and Condensation
Resistance of Windows, Doors and Glazed Wall Sections is available
to members at a cost of $10 for download, $20 for paper copy and
$25 for CD. Non-members may purchase the document at a cost of $25
for download, $50 for paper copy and $55 for CD.
HERE for more information about ordering the test method.
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