I used the Flex Seal spray product to seal some interior seams during the restoration of our 1970. The heat up of the skin in the sun caused the product to "flake" off. I suspect it would do the same on a roof. Possibly even at a faster rate due to UV.
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Craig and Carol
1997 34' Excella 1000
1970 27' Overlander, International
2009 Ford F150 5.4L
ProPride hitch with 1400# bars
AIR 41028
TAC GA-8
WBCCI 10199
Past President Southeastern Camping Unit (12)
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