What to Do If Your Ceiling Is Sagging You have two choices: Rip it out and replace the sagging section with 5/8-in.drywall, or add spacers andnew5/8-in.drywallbelow the sag.

However, a sagging ceiling isn't always caused by a broken key. Often it is caused when someone missteps in the attic - setting foot on the lath rather than on ceiling joist. Such was the case in ...