Volume 29, Issue 3 - Fall 2015

News: Insulating Glass

What Architects Need to Know about Insulating Glass


The NFL isn’t the only organization paying attention to deflation. As one glass industry association heads to the Mile-High City, it is focusing on how the changes in altitude and pressure affect the products within its market.

The Insulating Glass Manufacturers Alliance (IGMA), a group of professionals who come together to solve common industry problems and address needs relative to insulating glass, is holding its second technical conference of the year in October in Denver.

During the conference, Jeff Haberer, director of technical services for Trulite Glass and Aluminum Solutions, will give a presentation on altitude and insulating glass (IG) technology.

Haberer says that while his presentation “won’t tell you who is guilty and who is not, it will review the serious issues that can arise when insulating glass units are taken to high altitudes.

“It will also explain the simple physics at play and point out key variables that make IG units susceptible to changes in altitude. It will also review some of the most common mitigation practices to alleviate high-altitude concerns,” he says.

Stay tuned to the Architects’ Guide to Glass & Metal website, www.glassguides.com, for our coverage of the event and to read what Haberer had to say.

Other Topics of Discussion:


• IGMA recently released a new technical bulletin on vacuum insulating glass. VIG has drawn attention over the past several years as it offers performance approaching a well-insulated wall, but with two layers of glass, according to the association. That prompted the alliance to work on the bulletin with several of its members, and the group will be working with IGMA’s glazing guidelines task group to develop a document for VIG.

• In addition to working on a Product Category Rule (PCR) for fenestration products, the Alliance’s life cycle assessment task group, chaired by Helen Sanders of SAGE Electrochromics, has prepared the first draft of a PCR for processed glass, which focuses on processes rather than construction. Processes in the PCR include coatings, heat-treated, laminated and insulating glass. According to IGMA, the PCR provides a “critical link” between their float glass PCR and windows PCR.

• The impact of solar reflectance continues to be a trending topic, as the subject made its way into the news last year with a few cases of vinyl siding and car parts warping due to concentrated reflectance off low-E windows. An Impact of Reflectance Working Group, chaired by Tracy Rogers of Quanex, is reviewing existing available industry data, and the scope and objectives of the group will be discussed at the fall meeting.

• Sustainability and demand for transparency from manufacturers was addressed at the first conference of the year, as Jim Mellentine of Sustainable Solutions Corp. discussed the nuances of Health Product Declarations (HPD). He presented a few examples of HPDs by IGMA members and pointed out a few issues. One HPD, for example, “claims disclosure of all known health hazards, yet does not list health hazards for substances on the 32 priority hazard lists,” and that it “claims disclosure of all intentional ingredients, yet the ingredients are not listed per HPD standard requirements.”

• Also at the earlier conference, Arlene Z. Stewart of AZS Consulting gave an update on the new Florida energy code. She discussed how the increased stringency of codes overall affects the IG market, because windows can make or break calculations and certifications. “Sometimes, the only way to find out about glass is through IG certification,” she said. “So there may be more activity on compliance coming your way.”

AGG

Architects' Guide to Glass & Metal
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