Wagner Presents Potential Solution for Global IG Standards

February 5th, 2013 by DWM Magazine

DSC_0009-wagnerDr. Werner Wagner of Sika Services AG, based in Zurich, Switzerland, presented his findings on “European Gas Loss Testing and Related Benefits” at today’s sessions for the Insulating Glass Manufacturers Alliance (IGMA) Annual Conference in New Orleans.

Most notably in his presentation, Wagner posed the question of how to reach an international standard for insulating glass units (IGUs) as well as a potential, theoretical solution for a global standard.

“By the end of the day we have to come to a conclusion to compare performances,” said Wagner.

According to Wagner, a German professor has developed a concept for reaching a global standard theoretically based on the calculations of the isochoric pressure of the IGU. In this theoretical solution, the pressure is always constant and determined by increments such as temperature, atmospheric pressure and altitude of both production and installation of the IGU. Essentially, it consists of two main steps: calculation of isochoric pressure and transformation to real load on the IG seal.

Wagner closed his presentation by offering the idea that a hybrid of the two standards, adopting the gas predictability of the European standard in addition to the rigorous U.S. testing, which includes the ultraviolet radiation testing the European standard lacks, could present a feasible solution toward a global standard. Further, Wagner noted that IG edge sealants do have room for improvement and a chance for both long- and short-term improvements.

The IGMA annual conference runs through Friday, February 8. Stay tuned to www.dwmmag.com  for the latest from the event throughout the week.

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  1. I doubt if the US would be willing to change the air space in most IG units because the windows they go into would have to be completely redesigned, impacting huge inventories as well. European windows tend to have more frame and less glass, contrary to design concepts in America.

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