The new quality mark for TSG-HF with external monitoring by external testing and inspection bodies was introduced in 2018. Therewith the Bundesverband Flachglas and the Gütegemeinschaft Flachglas want to make sure that it is allowed to use this reliable product with tested safety tomorrow as well.
The German building authorities had always defined additional requirements within the Construction Products List A concerning the heat soak process of TSG, in order to ensure a striven for security level. The so-called “ESG-H” differed as national particularity from the heat-soaked TSG according to EN 14179 essentially in two points: for one thing a longer soak time, for another thing an obligatory, external monitoring.
Such national, additional requirements within the Construction Products List has been declared inadmissible with the verdict C-100/13 by the European Court of Justice by October 16 2014. The product “ESG-H” as a national particularity does therefore not exist anymore.
There is now consensus among the experts and also with the building authorities that a soak time of two hours is sufficient to reduce the risk of spontaneous breakage to the required level. Nevertheless, external monitoring continues to be regarded as an essential precondition for the safety level of heat-soaked TSG striven for in Germany.
Its necessity is the consequence of the regulations within the Model Administrative Provisions – Technical Building Rules (MVV TB) resp. the regulations of the federal states (VV-TB) as well as the standard series DIN 18008-2.
We want to create legal certainty for producers as well as users of heat-soaked TSG. Therefore, with the new RAL quality mark TSG-HF, we offer a transparent system of external monitoring as an industry solution that fulfills the requirements of the standard and the building authorities. The quality and inspection regulations for toughened safety glass with heat-soak test for quality monitoring of the RAL-GZ 525 define the required scope of internal and external monitoring.