Floor Leveling Compound Over Painted Concrete. A painted concrete floor can interfere with the leveler, however, preventing the leveler from binding successfully with the concrete. If the floor is solid with no movement then you shouldn't have any problem sticking tile to a painted floor. If you plan on leveling a concrete floor, you can do so with relative ease by using a leveling compound.

This is a rough guide based on leveling 100 square feet to various depths: Floor leveller with superior flow and workability. Wood floors often have problems with dips and bumps.
Gallery of Floor Leveling Compound Over Painted Concrete
This self lever is gray in colour and is a quick setting solution to repair uneven flooring, and if you need to work fast to get the job done then this is a great choice to go for. If the floor is solid with no movement then you shouldn't have any problem sticking tile to a painted floor. Be aware that it won't stick very good. When you use a leveling compound, make sure you follow its mixing instructions precisely, mixing in a large bucket.