Ready-to-use, grey repair mortar for the most diverse building materials. For repairing, filling, adhesion and restoration of masonry joints inside and outside, refinishing chipped wall edges, fixing and grouting of tiles and stones as well as fixing of roof tiles. Mortar can be dispensed using a standard cartridge applicator gun and can be applied immediately also on moist or absorbent substrates, without mixing or adding water, sand, or the like. After hardening, the mortar has a good UV, weather and ageing resistance and can be painted over.