Leaking around Chainplates on a Com-Pac 23

[Bristol14]

As the snow in my yard is almost gone, I've started to get my '87 23 ready for a May launch. I'm pretty excited about getting Mudlark back in the water as I had to sit out last summer due to some serious but successful heart surgery.

One of the items on my list is to fix leaking around my Chainplates. Last fall I thought I had the leaking into my cabin solved by replacing port hole gaskets. But after a final deck cleaning, I still had leaks and found the cause to be the Chainplates slot. I tried cleaning out the dried caulking and replaced it with butyl tape but am still getting some leaks. I'm guessing it will continue when my shrouds are in place.

I've read previous posts on the subject but am wondering if there are any new thoughts on the subject. I've noticed that some boats have a rubber "cap" that fits over the Chainplates to help shed water.

Thoughts?

Thx.

[H2operator]

Hey Bristol, I'm in the process of removing the old caulk from the deck/hull seam on the inside. I've noticed that one of the chainplates is visible at the seam where I removed the caulk. It's where the chainplate goes through the flange. It's possible that caulking in your boat has failed and it's leaking there.
Thanks Lance

[wes]

Agree that the hull to deck joint is the most likely culprit. The slot for the chainplate is vulnerable to leaks, because this is where the hull to deck joint is thinnest. It's a royal pain, but the best solution is to remove the chainplates, clean out the hull to deck joint in the immediate area, and recaulk with 4200 or 5200.

For the chainplates' mounting bolts, my preference is butyl rubber tape. This joint is subject to high loads under sail, and it needs to be able to move and flex without breaking the bond.

Wes

[Styge]

I'm experiencing some leaking around this area and will be investigating this weekend.  Just curious Wes, but how do you apply the butyl tape? Never used it. 
Thanks

Styge
Juneau, AK
(most Northerly CP23?)

[H2operator]

Styge , To apply the butyl tape you will have to remove the chainplate and make a gasket with the tape.
It will be difficult to seal the area where the chainplate goes through the flange so you'll most likely have to seal that with a caulk. The butyl tape works best where there is a bolt or screw perforation. You can use the butyl on the chainplate backing plates also. Lance

[Styge]

So I spent a lovely Saturday afternoon/Sunday morning sitting atop my step ladders picking out the old caulk from the around the three chains plate where they pass through the flange.  Such fun, I felt like a dental hygienist!  The chainplate were stuck solid, so to avoid puling off the four year old exquisitely applied paint from the hull (done by Kelly Refinishing in BC) I opted for the half ass approach. Filled with 4200 and slapped a layer along the seam though it looked to be in decent condition.  I may apply a strip of gorilla tape over the top before reseating the rub rail just for fun.  I am desperately trying to get her in the water sooner rather than later.  We have a short season up here as it is and it been too long for me sitting on the shore.  I may do a more thorough job next year once I get the sailing itch scratched.  BTW, all the bolts along the seam needed a tighten of about a quarter turn and one had lost it nut.  Is that normal?

Styge
Sailing AK