The rise of densely sintered porcelain stoneware tiles and their reduced porosity – and hence greater resistance to freezing – made polymer-containing tile adhesives like Ardurit X7G a necessity. Fritz and Kranz are of one opinion: “There’s no way you could lay these tiles with the old thick-bed technology.” The tiles would quickly detach from the floor or wall, they add, noting that polymer-modified tile adhesives are the only way to permanently bond these kinds of tiles.
“Thanks to the new technology and the new products used for the Olympic venues, my name quickly gained currency in technical circles after the games,” says Kranz. That was the beginning of an exceptionally successful career: trade organizations from all over Germany invited him to speak, Ardex promoted him to the position of technical manager for the tiles and screeds business, and he earned a degree in civil engineering while continuing to work. And he has served as an expert witness ever since retiring from Ardex – a role he continues to fill to this day.