I have been lurking of the forum for quite some time. Picked up a 2018 Roo 233S over Thanksgiving. Made a mistake in not taking a ladder to get up on the roof when we inspected it. Got up there today and sure enough, found some roof damage
Anyway, it appears the black tank vent cap fell off at some point in time. The roof liner is intact, but it wasn't sealed to the pipe at all, so water has been getting in. The plywood is definitely rotten around the pipe. There is no interior damage fortunately, so I would like to keep it that way.
I am looking for suggestions on how to tackle this. I'm not adverse to opening up the affected area and replacing plywood etc, but from what I understand the roof construction on this camper is a foam filled plywood shell, which would leave me with nothing solid to attach new plywood to.
Another option would be to replace the vent cap and seal the heck out of it and let it ride. Not in love with that idea, but seeing as the roof membrane is perfectly intact, it would probably work fine for now.