Even though i use chalk paint, which adheres to pretty much any surface, i still like to lightly sand everything to help it along, just in case. sanding first is a lot easier than dealing with paint not sticking to random areas later. trust me. step 2- paint base color. once i sanded and cleaned the piece thoroughly it was time for my base.Feb 07, it would be impossible to paint otherwise. i know the lead paint regulations say don’t sand, but it’s absurd. what else could you possibly do — other than rip all the molding out of the walls, of course. but it can be very serious for young children. i have a friend whose baby played in a room with paint peeling off the.