FGIA Issues New Guidance on Designing High-Performance Multiple-Cavity IGUs

USGlass Magazine•February 05, 2026•1 min read

, “Design Considerations for Multiple-Cavity Insulating Glass Units,” was last updated in 2013. The document aims to guide the design, fabrication and use of multiple-cavity IGUs within the fenestration industry.

“Demand for increasing energy-efficient fenestration products continues to rise,” says Amy Becker, FGIA glass products specialist and staff liaison for the Design Considerations for Multiple Cavity IGUs Task Group. “One method for addressing this demand is by increasing the number of cavities in an IGU. This method, while effective, can create new challenges. These guidelines are therefore intended to assist those who design, specify, fabricate and install units.”

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The Surface Design Awards 2026 finalists have been announced!

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05 Feb 2026

ByInterior Design Magazine

6 min read

The Surface Design Awards 2026 finalists have been announced!

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The Surface Design Awards 2026 finalists have been announced!

Interior Design Magazine

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BPL Enclosure and Seal Merge to Expand Building Envelope Consulting Reach

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Defunct Glass Company Still on the Hook for $1.6M Pension Bill, Court Says

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Duro-Last Hosts National Sales Seminar, Celebrates Outstanding Roofing Work

FGIA Issues New Guidance on Designing High-Performance Multiple-Cavity IGUs

The Fenestration and Glazing Industry Alliance (FGIA) released an updated specification offering guidelines intended to identify design considerations when designing multiple-cavity insulating glass units (IGU). The specification also covers the evaluation of the manufacturing process, as well as addressing the quality requirements of the sealed space of a multiple-cavity IGU. , “Design Considerations for Multiple-Cavity Insulating Glass Units,” was last updated in 2013. The document aims to guide the design, fabrication and use of multiple-cavity IGUs within the fenestration industry. “Demand for increasing energy-efficient fenestration products continues to rise,” says Amy Becker, FGIA glass products specialist and staff liaison for the Design Considerations for Multiple Cavity IGUs Task Group. “One method for addressing this demand is by increasing the number of cavities in an IGU. This method, while effective, can create new challenges. These guidelines are therefore intended to as

FGIA Issues New Guidance on Designing High-Performance Multiple-Cavity IGUs

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FTI Extends Abstract Deadline for 2026 World Congress

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FreMarq, Alpen Target Whole-Assembly Energy Efficiency with Thin Glass Technology

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Glass Expo Hawaii ’26 Opens, Marking Event’s Return After Two Decades

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Veteran Estimator Darryl Bradshaw Joins Accura Systems

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Vietnam Orders Temporary Tariffs on Imported Float Glass

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4 min read

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A landmark golfside retreat unveils with the opening of Radisson Collection The National Hotel, Brussels

Interior Design Magazine

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Weather Monitoring Platform Communicates Instantly

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Luxury Vinyl Flooring’s Refresh Is Recognized with Awards

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1 min read

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Interior Design (Trade)

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Parents File Lawsuit Against Window Installer After Child’s Fatal Fall

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New Kuraray Middle East Office in Dubai Marks Long-Term Commitment to Regional Innovation

ByInterior Design (Trade)

1 min read

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Caltech’s New Lab Sets The Standard For Creative Sustainability

Interior Design (Trade)

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Quikserv Celebrates 40 Years as Global Window Provider

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USGlass Magazine

02 February 2026

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