Knauf Waterproofing Muscle 120x120 mm for wallpaper wall surfaces and high quality insulation element that provides reliable sinking of other water sensitive points. Perfectly combined with flexible and solid material and prevents water and moisture from the constructory of water and moisture. Thanks to the size of 120x120 mm, it covers the pipe outputs, creates long-term protection. With an easy application, both new construction and repair work are easily used. It is resistant to temperature changes, mechanical influences and chemicals.