I am currently finishing an older 3-car detached garage. Both the wall studs and the ceiling trusses have 24" OC spacing.
I know that for the ceiling, I'll need to use 5/8" thick drywall, due to the 24" spacing, and sagging that would occur over time as moisture hits the drywall (which will happen in a detached garage). However, for the walls, our local code allows for 1/2" wallboard for 24" OC studs. But wouldn't I have the same issues as with the ceiling? Thoughts? (I am not opposed to the price- it is only about $30 difference to use all 5/8". However it is easier to hang 1/2")