Properly sealing new chain plate through the deck.

[Laskadog]

Wow, thanks for the replies! The link from Bobby Lex is bang on. I have sevdral great alternatives as well.

Cheers!

[bcboomer]

I've used g/flex and, although it flexes, it won't stretch like butyl tape. I wouldn't count on it to keep a seal in this application.
Sailcrazy gives a very good method of permanently sealing deck penetrations

[Jim Cate]

If the G-Flex method actually bonds the chainplate to the deck, how hard is it to withdraw the CP in the future?

Jim

[CSY Man]

Originally Posted by Jim Cate

If the G-Flex method actually bonds the chainplate to the deck, how hard is it to withdraw the CP in the future?

Jim

No idea.
I applied the Gflex epoxy after I replaced all 9 chain plates, 316 electro plated SS, 20 year life span easily.
Didn't try it but I assume I sharp Stanley knife would cut through the epoxy if applied fairly thin.
I sold the boat in 2013, 4 owners since and none of them have shown any interest in replacing the chainplates.
Not sure if constant movement with weaken the epoxy eventually and make it crack.

[Seaglass40]

Another vote for butyl tape. Have used it successfully on chain plates and stanchions. Great info on this site:

https://marinehowto.com/bed-it-tape/

[Breaking Waves]

Personally, I would put in a carbon chainplate - can be perfectly bonded in, with absolutely zero chance of leak or corrosion. Need a little laminating skill but it is not rocket science. Super easy to make extremely strong.

[FuzzyFeat]

A flogging staysail will put a whole lot of shaking on any deck slot. I highly recommend a fitting that is bolted to the deck with a separate tension adjustment below the deck.



The Fitting has a 4x4 deck plate that is bedded and bolted to the deck and has a tang above the deck for the shroud and a separate attachment for the under deck tensioner. This gives you a large bedding area that does not, can not, move - or leak.
Been there - done just that. VOE

[Cynara]

Ours wasn't in half. Just slid it high enough up to apply the sealant underneath