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#1
03-08-2016, 09:42 AM
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Caulking a rubrail
So I recently pulled my rubrail, epoxied the hull/cap joint and all holes in the cap, sealed the hull/cap joint with 5200, and ran a bead of 5200 behind the rubrail. My questions is that if I have a few gaps in the rubrail to fiberglass area (above and below the rubrail), should I fill them in with a sealant? If so, what kind?
As of now, water should not be able to pass from the top of the rubrail to the bottom of the rubrail and I want to allow for any water that enters the rubrail from the deck or from beneath to have a way to escape. Thoughts, suggestions? 
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#2
03-09-2016, 05:04 PM
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If no suggestions, then how does yours look? How was yours done?
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#4
03-10-2016, 12:33 AM
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I have a dark brown rub rail and I matched it pretty close with a high quality silicone caulk. I did top & bottom so that everything is sealed up completely. I taped it off to keep the gelcoat clean. I also cleaned it with acetone on a rag first to ensure a good bond - got down into the gap as well as I could. I pulled the tape when the caulk skinned over - I was afraid of the tape sticking in the caulk if I let it cure completely. Worked out well. It's been about two years and it still looks good. I can't remember what product I used but I am sure it was a marine silicone caulk. Sealants are stronger but this is really more of a job for caulk since it is an exposed finish.
Let us know how it works out for you and take a few pictures - I think lots of boats could benefit from this simple little cosmetic project.
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#5
03-10-2016, 09:06 AM
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Simple to pull the rubrail off. The worst part was getting old sealant out of the hull/cap joint. Still debating on what to do as for caulking the top and bottom of the rubrail. Any other opinions out there?
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