July 19, 2019

Navigating the Sea of Seals and Labels

by Guest Blogger

RAL codes in Germany help consumers make informed decisions
No matter where you are in the world, selecting high-quality window products can be confusing with various rating systems and labels. But which are the most reputable?
Three years ago,  the German Flat Glass Quality Association (Gütegemeinschaft Flachglas e.V.) set out to correct that problem with the introduction of RAL-GZ 520, a system of testing and monitoring the quality of multipane insulating glass. Since then, insulating glass windows may only bear the RAL quality seal if the spacers, desiccants and sealants used in production are also quality monitored under the RAL system.
According to Joachim Stoss, managing director of Edgetech Europe GmbH, “The RAL quality label is one of the most reliable and trustworthy quality seals on the market due to its well-defined quality criteria and independent character.”
RAL quality labels have ranked among the most prestigious ones in Germany since 1925. There are now more than 160 different products for the individual product groups, and the number of RAL quality-monitored products has increased to around 9,000.  As of April 1, 2019, Super Spacer® T-Spacer™ Premium, T-Spacer™ Premium Plus and TriSeal™ Premium Plus bear the RAL Quality Label.
“By means of the RAL marking of our warm-edge spacers, we demonstrate to insulating glass manufacturers that this product was thoroughly tested and fulfills the highest quality demands.” Stoss said. “Furthermore, the glass industry now has more alternatives when issuing tenders
where energy-efficient windows are required.”
All three RAL quality-monitored Super Spacer® systems are also certified for Arctic climates, as well as every climate zone with lower requirements by the Passive House Institute in Darmstadt, Germany. With an edge resistance of 6.11 m K/W, warm-edge Super Spacer® Premium was rated in the highest efficiency class phA+. Where the heat transfer coefficient  is concerned, this product also achieves top values of up to 0.0028 [W/mK]* and is thus one of the most energy-efficient spacers on the market.
With the RAL system in place, consumers can now enjoy the confidence that they are purchasing one of the highest-quality window systems when they see the label.
* source: Bundesverband Flachglas e. V. / German flat glass association

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Posted: July 19, 2019 by Guest Blogger Filed under: