Sapacco work is best done with a small spatula. If the ceiling site does not have too large cracks, then they put down in one stage. But with too large and deep cracks, the putty solution is applied gradually to let the solution grab the solution of the ceiling well with the solution. As soon as you plunge the ceiling, you will still need to apply a thin layer of finish putty, which will help to make the surface of the ceiling more even and beautiful.