Are 1” Cedar Planks Strong Enough for Lean-to (zone 6)

Need help to confirm if a 2:12 lean-to roof (10’x30′ long) in zone 6 is strong enough if constructed with 1” thick (actual 1”) tongue-and-groove red cedar 6” planks screwed… Need help to confirm if a 2:12 lean-to roof (10’x30′ long) in zone 6 is strong enough if constructed with 1” thick (actual 1”) tongue-and-groove red cedar 6” planks screwed…Read MoreGreenBuildingAdvisor