It's hard to tell how steep it really is, camera angle can be deceiving. You can see where stuff across the slope is creating wetter spots but I would not want to walk in there. With that roof water is just falling in. A berm or swale across the top might help some but probably not that much.
To me wood chips look to be a good approach to start with. See how they work out and base your next actions, if any are necessary, on what you see. Hopefully that will solve it.
To me wood chips look to be a good approach to start with. See how they work out and base your next actions, if any are necessary, on what you see. Hopefully that will solve it.