Hi @westend,
Definitely not up for tearing off the roof & doing a complete redo, or gutting from the inside... As i said, not the type who would do that myself, and definately not going to pay someone else to do it (at this point, TT is 10+ y.o, and book value is ~4-5K...) I'd like to get one more year (maybe two) out of it before I dump it; it's been a great 1st TT, but looking to upgrade in a year or so anyways... Just want to halt the damage before it gets any worse...
Somewhere I read that Eternabond tape is not what to use on bumpy surfaces... Where the rubber roof meets the aluminum, what with the bead cap and the screw heads, it's definitely a bumpy surface... Would it work if I get it wide enough to go 1" onto the rubber roof (shower skylight and rear bath vent wouldn't allow me to go further forward) and 1" on so onto the rear aluminum, which are relatively smooth, and let the middle part just cover over the seam bead/screws as best as possible?
Here's a pic of the seam:
