IGMA Releases Voluntary Guidelines for the Identification of Visual
Obstruction in the Airspace of IG Units
September 1, 2009
The Insulating Glass Manufacturers Alliance (IGMA) has issued IGMA
Technical Publication TM-3100-09, Voluntary Guidelines for the
Identification of Visual Obstructions in the Air Space of Insulating
Glass Units. The association says these are advisory guidelines
to assist in achieving long-term performance of sealed insulating
glass units. These guidelines are intended for use by those who
design, specify, manufacture and install insulating glass units
and were written as a result of open discussions and review by the
IGMA Visual Quality Working Group and others knowledgeable in the
field. The association adds that the guidelines were developed in
accordance with IGMA due process procedures. In addition, they reflect
existing technology and are subject to periodic review and change.
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