Tuesday, March 27, 2012

No Language Change for NFRC 500

Vilhauer Leads Discussion
The Condensation Subcommittee just voted not to change certain language in the NFRC 500.

The W6/T6 Approval Task Group proposed a revision in language that concerns the procedure enabling a condensation resistance rating for windows, fully glazed doors, curtain wall systems, site-built products, sloped glazing systems, skylights, dynamic glazing Products, and other fenestration products.

At issue was a paragraphs that reads,
"Dynamic Glazing Products that utilize a shading system between glazing layers can only be rated for Condensation Resistance by using the test method specified in Section 5."

The ballot called for the removal of the words, “between glazing layers.”

One objection to the ballot came from the American Architectural Manufacturers Association (AAMA). The organization does not support the inclusion of attachment products that can't be rated independently and can be easily removed from the product being rated. Instead, AAMA views glazing panels or between the glass accessories as a whole product.

Following some discussion, the members voted not to change the document.

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