"Jack" wrote in message
...
I've got a weird situation where I need to hang sheetrock upside down,
like on a ceiling. The board has to span 28 inches between supports.
There is no way I can put any more support between the span. Is there any
special sheetrock that is stronger than the regular stuff I can get at the
borg? Any recommendations would be greatly appreciated. Thank you.

5/8 won't sag as much as 1/2 inch....