Is there a way to resurface acoustical tile ceilings? There is no visible grid, and there are holes of various sizes in each tile. Very popular, I gather, back in the 50's when my house was built! Will texture paint work? There are scuffs in places from floor-to-ceiling tension-rod bookcases, and slight dents in places where my "super hero" sons' heads hit the ceiling when they jumped off their beds. Any input would be appreciated.