Janet, I used bed-it butyl tape https://bed-it.com/ on my chain plates when I did a refit in 2000. So far no leaks! If your boat is set up like my 1981 C&C 34 it is best if you can remove the stays entirely so the plate comes all the way up. Should be able to use a halyard to the toe rail as a temporary stay. I cut a quarter inch angle into the fiberglass around the chain plate to ensure that the bed-it would have room to make a seal. Put a nice rolled bead in there and then put tape on the bottom of the plate before screwing it back down.
I generally use bed-it for everything above the waterline by the way. Seems to work pretty well even around self tapping screws and is much easier to both use and to replace than 3M products or other sealants. Does take a bit more time to seep out so you have to tighten screws progressively and cut away the excess a few times over successive weeks. Nathan ~~~ Nathan Post +1 (781) 605-8671 On Mon, Nov 10, 2025 at 8:58 PM Janet Schilling via CnC-List < [email protected]> wrote: > What kind of sealant/caulk is recommended? It was suggested that the > horizontal deck plate could be unscrewed and lifted enough off the deck to > add sealant of some kind underneath, then screw back down. > Thanks. > BTW, we removed the old caulk around all the port lites and redid with Dow > 795 and tightened all the screws. It was a success! Not perfect, but no > leaks. > Janet > > Sent from my iPhone > November is the time of the year when my Internet bills come in. It's > also the time when you can show your appreciation of this list and the C&C > Photo Album. Please help by making a small contribution using PayPal at: > https://www.paypal.com/paypalme/stumurray All contributions are greatly > appreciated. >
November is the time of the year when my Internet bills come in. It's also the time when you can show your appreciation of this list and the C&C Photo Album. Please help by making a small contribution using PayPal at: https://www.paypal.com/paypalme/stumurray All contributions are greatly appreciated.
