Flexible adhesive for difficult substrates, e.g. heated screeds, chipboard, precast concrete parts, firmly adhering interior paints, sticks all types of tiles, including porcelain stoneware tiles as well as new ones on old tiles, also for electric heating mats, with the best test results far above DIN 18156.2, for indoor and outdoor use : 1.2-3.5 kgm2, depending on the shape of the tile and slab Yield 25 kg: 7-19 m2