FGIA Publishes Standard Procedures for Surface Temperature Assessment

The Fenestration and Glazing Industry Alliance (FGIA) has developed AAMA 501.9, Surface Temperature Assessment for Condensation Evaluation of Exterior Wall Systems, a new document providing a standard procedure for the measurement of surface temperatures to be used in the condensation evaluation of exterior walls under laboratory conditions.

“AAMA 501.9 is another optional test that can be performed in conjunction with a project specific curtainwall mock-up,” says Greg McKenna of Kawneer, vice chair of the Wall Mock-up Condensation Evaluation Work Group. “It uses a similar test apparatus to that used in AAMA 501.5, Test Method for Thermal Cycling of Exterior Walls.”

McKenna says that while AAMA 501.5 is concerned only with the effect of temperature cycling and thermal movement on the wall system, AAMA 501.9 is used to measure temperatures on the interior surface of the wall at designated exterior and interior  ambient air temperatures.

“The resulting surface temperatures can then be compared to anticipated dew point temperatures that may occur in the actual building at similar, as tested, temperatures on the interior and exterior and a defined interior relative humidity,” he says.

Flat Glass EPD, Design Guide, Technical Papers Released

An environmental product declaration (EPD) for flat glass products sold in the U.S., as well as an updated version of the Heavy Glass Door Design Guide, replacing the previous 1999 edition, have been published by the National Glass Association (NGA). The organization also has released six Glass Technical Papers (GTPs).

The EPD is valid for five years for clear, low-iron and tinted glass products that have been manufactured in an unprocessed annealed state. Glass that has been coated, heat-treated or undergone any secondary processing is not within the scope of this declaration.

The EPD covers flat glass produced by the four member companies of its Forming Committee, AGC Glass North America, Guardian Industries, NSG Pilkington and Vitro Architectural Glass.

The newly revised Heavy Glass Door Design Guide is a resource for architects, fabricators and contractors who require technical information and application suggestions for fully tempered and tempered laminated, heavy glass storefront and entrance system design.

Task groups also worked on several GTPs to reflect the latest developments and trends within the industry. These include:
• Bird-Friendly Glass Design Strategies;
• Marking and Labeling of Architectural Laminated Glass;
• Safety Guidelines for Deglazing Structural Silicone;
• Protecting Against Weld Splatter;
• Top 10 Items Commonly Missing from Fenestration System Shop Drawings; and
• Approximate Weight of Architectural Flat Glass.

Bird-Friendly Glass Design Strategies is the newest addition to the library of
resources.

NFRC’s FenStar Program Awarded ANSI Certification

The National Fenestration Rating Council’s (NFRC) FenStar Certification Program, which ensures windows, doors and skylights meet Energy Star specifications, received the American National Standards Institute (ANSI) Accreditation.

ANSI’s National Accreditation Board awarded the accreditation to NFRC after an extensive review process confirmed its FenStar program meets the ISO/IEC 17065 standard used for certification bodies around the world.

The Council’s board of directors also approved a plan to submit six NFRC documents to ANSI. The six documents are:
• NFRC 100-2020: Procedure for Determining Fenestration Product U-factors;
• NFRC 200-2020: Procedure for Determining Fenestration Product Solar Heat Gain Coefficient and Visible Transmittance at Normal Incidence;
• NFRC 202-2020: Procedure for Determining Translucent Fenestration Product Visible Transmittance at Normal Incidence;
• NFRC 203-2020: Procedure for Determining Visible Transmittance of Tubular Daylighting Devices;
• NFRC 400-2020: Procedure for Determining Fenestration Product Air Leakage; and
• NFRC 500-2020: Procedure for Determining Fenestration Product Condensation Index Ratings.

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