I have always used the Dicor self leveling sealant and non leveling sealant depending on the application.
Just clean the area of the TPO roof and apply. I have been using it for 3+ years and have not had one issue. Not that I had issues in the first place, I am just anal about the RV being sealed properly and on my last RV, from the factory left little to be desired when it came to sealing the roof properly.
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2017 Thor Challenger 37LX, Westward interior, Riverside paint job. Upgraded to 4 battery setup, Splendide 2100XC Washer/Dryer combo, Progressive Industries HW50 EMS, Heavy Duty Steering stabilizer, and TST TPMS 6+4 setup for tow vehicle . Member FMCA
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