I have a metal roof with exposed fasteners, and I have some mold in the attic on my plywood roof sheathing. The source of the moisture that caused the mold is already fixed. My mold inspector says it would be best to replace the sheathing rather than remediating it in place. It isn't possible to replace the sheathing without taking the roof off. The roof exterior isn't very old, and it's still in pretty good shape.
Is it possible to take the metal roof off, replace the sheathing, and then put the original metal roof back on? Is this something that has been done before? Would I create leaks? Is this really dumb?
The other option is to put on a brand new roof + sheathing, but it seems a bit wasteful.