The roof decking is the layer of plywood or O.S.B. nailed into the trusses or rafters. Roof decking is usually 7/sixteen” and is available in 4’x8’ sheets. For those who’re tearing off outdated roofing, the roofer can seek out hurt that needs to be fixed after the deck is bare. https://gregorybjptv.nytechwiki.com/9854158/roof_things_to_know_before_you_buy