Prevents the penetration of moisture and dampness on walls and facades. Protects against driving rain and makes surfaces water-repellent without affecting water vapor permeability. It has dirt-repellent properties and helps prevent the formation of algae and green deposits. Suitable for all porous and absorbent natural and artificial stone surfaces as well as facing bricks. Particularly well-suited for mineral plaster and concrete facades. Especially effective for lime sandstone, brick, clinker, sandstone, marble, terrazzo, slate, porphyry, clay tiles, and cotto tiles.