Originally Posted by oldog/newtrick
I think Inspector meant to say it adheres to 1/2" wood fiber board, secured with screws and plates or you can use Simplex nails to nail down the base sheet I believe. Every spec I've seen calls for install over wfb.
Uhmmm,,,yaeh, about that...um,,
well boss. I ahh, um kinda just put it over the existing plywood....and ,a hhha well it um....
It actually is workin just fine. I didn't want to put the extra $$ into the shed roof. And I just stuck it down. It's a 3 pitch with 1/2 inch plywood, and a drip and rake edge.
If this was a house, follow the directions, but for an outbuilding , this stuff is way better than tarpaper.