01-18-2010, 08:14 AM
doctorwayne Wrote:My "scientific" guess is that the 5/8" board is 1/8" less likely to sag between support points than the 1/2".
I'm guessing the 5/8" board is 1/8" more difficult to hang on the ceiling than 1/2"!
Seems down here they always used 5/8 for walls and ceilings in commercial jobs, and 1/2 for walls and ceilings in residential.
Three Foot Rule In Effect At All Times