It's a shame if somebody coated a TPO roof, especially long before it has shown any sign of surface wear. Sheer ignorance, IMO, though it may well have been touted by some RV shop anxious to make some big bucks. How to convince people that its the seams and joints that leak, not the membrane?
In any case, brush or scrape with something stiff, as Mike suggests. Or get that pressure washer out (hopefully one more like 1500 psi than 3000+). If your tape & caulk is sound, it won't come off unless you get really close with that washer nozzle. Of course, it is applied over the coating, it's gonna come off with it no matter how you remove it.
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Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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