Originally Posted by Type-A
No rot. There is no water getting into the camper. This damage happened over the past week. We were up there last weekend and it was good and we went back up a few days ago and there was a tree branch on the ground. Fortunately there wasn't any rain during that time so the exposed wood was/is dry!
No water is a very good thing.
It's tough to tell from pictures, but are you certain that is EDPM rubber? The tears don't look typical to EPDM membrane failure.
That's quite a bit of damage.
If you decide to go the repair route I would suggest that you need some sort of mechanical fastening before going with whatever sealing method you decide upon. It looks to me that the material will easily shift if not somehow stabilized.
I agree with Eternabond tape for most repairs. With this fairly extensive damage, assuming EPDM repair, I've had good results using Dicor self leveling or two part sealant with roofing mesh to help to add strength. I believe that Home Depot sells Henry brand roof repair mesh.
My opinion and worth everything you'll never pay for it.