Has anyone tried this? I found another leak today and am getting tired of chasing them down!
I know there is stuff on the market you can paint on. Anyone tried it?
Liquid EPDM. Used in sheet form for ponds and roofing. I have a 1800sqft building with a almost flat roof and had shrinkage/leakage issues for years till I covered with the EPDM. two part catalyzed. Comes in six gallon pails with five gallons of product and catalyst. Takes two people, one to mix while other coats. Was 3600$ for product but has worked well. I have no clue how it's adhesion would be on fiberglass, but suspect it would be fine. Think it ended up being 60mil think, but would have to go back and double check.
Scott
Roger & Susan just did their roof a few months ago. Excellent report on the project linked below:
Roof Coating, New Furrion ACs (https://www.foreforums.com/index.php?topic=42506.msg425902#msg425902)
It really depends on "cracks". If they are just surface crazing in the gel coat then maybe. I had a few spots to repair not for cracks but because quarter sized spots of gel coat pulled off when I moved my satellite dish. I sanded down into original glass, used polyester resin and a fine glass fabric. One set I sanded it smooth and used the polyurethane paint primer on the spots, then another primer coat on the whole roof and then 3 coats of ceramic bead filled polyurethane paint. I like the result but it is not really a fix for cracks.
If you have real cracks that go down into the OEM glass layers then you need to sand aggressively into but not through the OEM glass layers, 3-4" wide. Fill with polyester resin or epoxy and a glass fabric cloth and maybe a glass mat top layer. Sand it smooth. It probably doesn't need to be flat, just smooth, some extra material won't hurt. This probably needs a wax free gel coat on to to seal it up. And then paint it.
I would very carefully consider a rubber roof coating. It will limit options in the future and might be hard to maintain.
I have seen Dicor lap sealant used on cracks. Seems to seal them up OK, it looks ugly but if it does the job ... it's on the roof. I think you can paint over it.