Pressure treated plywood for roof deck?
Can pressure treated plywood be used as roof decking without being destroyed by the dry heat a roof is exposed to?
I have a low sloped roof to replace where the 1/2" OSB has rotted out at the edges and water has been penetrating behind the gutter and I am afraid will soon be into the interior walls, possibly even rotting the ends of the trusses sitting on the top plate. So far the place hasn't fallen in and I can rebuild and reinforce what damage I find once I tear the roof off. What I am aiming at is redoing the mess and solving the problem, once and for all. I will use Storm Guard, 30 lb felt, with 30 or 35 year shingles. I always use the best quality materials and like doing things the right way with the best workmanship, only once. I am not sure this will completely solve the problems associated with ice damming or heavy downpours. But I thought if pressure treated ply were used at the most vulnerable places on the roof deck, even if water did seep in, the deck would not rot out again so readily. The other alternative is to strip the roof and completely rebuild a new, steeper roof. Even then there is a limit to the slope I could apply and if it's a good idea, I'd use the PT plywood on that as well.
Has anyone ever tried this before?