IMO with water leaks and Rv's most anything is possible it seems. With a flashlight do you see any discoloring in the foam? Like maybe a part of the foam with a coffee colored stain? Where the foam makes contact with roof is where my leak was and there was some discoloring of the foam. I also found useful was getting a very good look (not just once around) but looking at every inch where foam was discolored. And one of the bolts holes where bolt went thru the bracket had rust on it which also gave me a clue.
Hope others would share some proven short cuts. Took me about a day messing around to get problem fixed.
And after fixing we thought we still had a leak, but turned out to be excess water caught underneath of ceiling paneling and when we park on slight hill a couple of drops would drip on bed. Made us think we still had a problem but turned out water that was caught up there draining when RV at different angles.
