In the newsletter ‘e-transparent’ of December 2013, the German association Bundesverband Flachglas had published a legal experts comment to the question whether warm edge would be “state of the art” and what this would imply for the obligation to advise clients properly in Germany. In a contribution for the journal GLASWELT, I picked up the matter and explained the different technical standards. You can read, why you are well advised with warm edge in my article here (in German language).