Originally Posted by nealtw
Osb is better for walking on , ruf side up.
I was reading you should leave it outside for a month to gas off before installing osb or you will get toxic chemicals. Gotta feel sorry for those HD workers...
I'm working with a roofer guy now. He thinks 3/8" plywood is okay, but it is 24" centers, better 1/2" i think. It's worth paying this guy because he works 3x as fast as me.
I guess you could notice 1/4" difference from one side of the roof?