How do I find the area of sheathing, rather than the flat area of a roof object?
Registered forum members do not see this ad.
The sheathing area (finished) would be the area of each plane of the roof structure added together. For instance, each side of a straight gable end roof is two planes on angle. Find the area of these two planes and add them together. Rafter length including facia x ridge length including facia x 2.
In the real world though, you actually need to know how many full size sheets of sheathing you need to buy to cover the roof before they are cut up.
Yogi Berra: "In theory there is no difference between theory and practice. In practice there is."