Originally Posted by Daubsy
When I spoke to Barbara at ETI she said to seal the flange with an adhesive caulk. I think she recommended Proflex but I used Loctite PL Marine Sealant since I had it on hand.
Since i still had 99% of the tube of self leveling caulk left after covering the screws, I went back and ran a bead along the edges of the fiberglass. I'm sure the butyl tape would prevent leaks, but since I had to fix leaks around the old vent twice while on the road (which appeared to be attached/caulked with ProFlex), I decided to be sure. Let's hope I never have to take it off!