Surface protection systems shield the exposed concrete surface from moisture, dirt and graffiti. Water in particular washes contaminants, micro-organisms and salts into the concrete surface. In the long run, they attack the building material and cause tears and spalling. The surface protection by RECKLI seals new and older exposed concrete surfaces optionally without color or with a visual effect. The impregnations are suited for reworking pre-cast concrete elemental façades, in-situ concrete constructions, artificial stone and terrazzo floors.