I've recently started smelling a musty smell in my upstairs bedroom. The bedroom closet just happens to be where the downspout from the main roof drains onto the roof for my garage and creates a kind of corner in the roof. As I have been looking into it, how the downspout has been configured feels completely wrong.
Is there any way this makes sense? Why angle to downspout into/up the slope of the shingles as opposed to out and across the slope/away from the siding?