Water-based paint is not applied over whitewash: the chalk, lime or glue layer holds weakly and the paint peels off with it. So the whitewash is washed off down to the base, cracks are filled and the surface gets one coat of PROFI GRUNT or GRUNT EKO. For the ceiling, take snow-white deep-matt SNEZINKA, which does not yellow, in two coats. If you are painting for the first time, thixotropic AKRYLTIKS does not drip from the roller, and for kitchen, hallway and nursery walls choose class 1 washable DIAMOND 2.