I use 5/8" ply on all my roofs. this roof I did has 5/8" ply tongue and
groove on 16" centers.
I like that type of ply since 1/2" is like glorified cardboard........
The nails get a better bite in 5/8" also.
John

"Josepi" wrote in message news
Looks like a bomb shelter by the thickness of that sheeting.

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"jloomis" wrote in message ...

Roofing the shop, and oh boy what fun.
Been putting it off too long, and I jumped in head first.
john