Putty fills in little cracks, smoothens wall surface area, removing undulations any on it. Future layer on wall will be that of Primerwhich increases paint adhesion onto the surface. Moisture will avert the primer and paint from adhering correctly. A straightforward way to tell if the floor is dry enough http://residentialinteriorpainte44108.timeblog.net/21051104/how-paint-interior-cost-can-save-you-time-stress-and-money