Is there such a syndrome whereby drywall dries out and cracks just from age? The reason for asking is that I live in a coop with a history of structural problems. The new Board doesn't want to fix cracks in apts. and is claiming that cracks in walls and separations of walls from ceilings (over 1" wide) are not caused by building shifting or movement. Rather, they claim, drywall naturally does that after 15 years because it dries out.