I have a three season cabin and the drywall ceiling in the living room has one crack in it....I am assuming it is a result of shifting brought on by the freeze and thaw, the cabin is in Wisconsin.....I want to repaint the ceilings, but I want to fix this first.....Is there a way or a product that is flexible in nature to allow for the movement that causes the problem. It is the only crack I have, everything else is fine....