Do we want the good news or the bad first?!! All went well with the replaced lino., and plywood flooring in the following camping years for Sis. This past month I got to look for soggy ceiling. On the rubber roof all was well. Front left end of transition strip though, and front right screws were now "air screws" with no bite! Undid the whole row and lo and behold, water trails. What a pain unscrewing the rest. The socket heads had to have all that grey "plasticene" dug out to get any bite for my screw bit...Anyhoo, a whole strip of that gray **** pulled off easily. It had never helped anything under strip. All the screws were rusted to half-size. 20 some-odd water leaks. The end screws had ripped three nice holes in rubber when strip was first attached. Be warned here, any screw through material will grab and spiral a fast hole for you. I used some Dicor sealant to stick rubber back to the crappy osb underneath, then I ran a whole bead on both edges of transition strip and screwed down both ends, plus three more spaced evenly in between. I shall grab some hex-headed gasketed and longer galvanized screws for replacements. (Steel roofing type) More than 5 screws will add to more holes, so I will plug empties with Dikor. Bad news is front right osb is sawdust under the rubber in a triangle shape from corner. Same goes for rear left where trans. strip end was air screws and osb triangle mushy. Just knock with your knuckle. Solid equals sound osb., while dull thud is sawdust! As well when I redid the floor, their tub always had water from above in it. That was due to the skylight outer edge doing a wavy up & down-ways from simple hot/cold warpage. I had made a 1/4"X 1&1/4 perimeter ring out of a dually plastic mudflap (!), and after cleaning and resealing each layer and using a minimum of longer screws for hold-down, no leaks since floor job. That is the good news. Where I'm not going is underneath the front plastic skin. It will be rot city. Strange bulgings are obvious from swelling osb over the years of leakings.
That will be addressed when time allows and campings are done for!!
