I would think you also have to be concerned about vibration issues, not normally an issue with bathrooms. Whatever you use needs to be flexible, and compliant with vibration and chassis flex. FWIW, you may want to also consider RV roof sealing products, because they're designed for that type of environment. But as DD mentions, anything you use will be meaningless without proper prep.
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- Tony P.
Currently
- 1984 944 SP2 racer
- 1977 911 KM Special vintage racer
- 2000 Boxster S (now mine)
- 1995 993 (garage queen)
- 2007 Cayman S (wife's track beast)
- 2017 F350 (tow monster)
- 2018 Jeep Wrangler
- 1982 911 Targa (resurrection in process)
Gone but not forgotten
- 1989 944S2
- 1979 RX7
- 1986 944
- 1991 944S2 (in car heaven...)
- 2001 Chevy Suburban 2500 (FIL's beast now)
- 2012 Cayman R
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