"Gntry" wrote in message
news:CCGvf.36$7l4.24@trndny03...
I live in the North East, I see a new build house going up down the road,
they have installed what looks like 5/8 OSB board roofing material. The
joists are 16". I though you needed to install 3/4 for roofing?
Would plywood have been better then OSB at least for the roof?


OSB used to be a lot cheaper than plywood. Not so much any more. The only
places ply wood is used where I live is the edges of the roof. They will
install a 2-foot wide piece on the ends where exposed to the elements. The
rest is OSB.