High-quality, multipurpose sandable putty for repairing plaster renderings, masonry and concrete, including aerated concrete blocks like YTONG, HEBEL, joints in plasterboard structures, etc. Cementing plasterboard joints throughout the process of all three operations (1. applying bandages, 2. stretching the base layer, 3. stretching the the final layer). Good for leveling uneven plaster substrates before making the final surface layer. Lightly sandable. Highly resistant to cracking. Extended setting time. Labeled according to EN 13963 - 3AT.