Last TiefENGrund 5 kg Knauf is a quality primitive solution for strengthening surfaces and further work with high penetration capability. Used on gypsum, concrete, brick, plaster and other mineral-based surfaces. Equitating the surface`s ability to absorb the ability, the paint, glue and plastering ensures better quality and longevity. Reduces dustening, strengthens the surface and significantly increases the adhesion of subsequent covers. Suitable for application in both internal and external work.