Please don't use silicone. Eventually it will fail, and it's a pain to get off. Use one of the sealants that you can buy especially for RV exteriors. They'll stay pliable, but won't come off after a short time. I've been having a bear of a time removing all the failed silicone caulk from both of our coaches, and I'm replacing it with either Dicor self leveling sealant on the roofs, and Pro Flex on the other areas such as lights, vents etc.
I replaced both roof vents and both plumbing vents on the 15 1/2 SC yesterday, and half the job was trying to get the remains os silicone caulk off the aluminum roof. I had to scrub it off with steel wool soaked in laquer thinner. The 2370 has acouple of areas on the rubber roof that were repaired by a previous owner with silicone, and I dread removing that next week.
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Chris & Tara
Ben & Jerry (The 2 Beagles)
2017 F-150 Crew Cab
2003 2570
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