P23 repairs Silcone or 3M4200

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DAVA390

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Jul 13, 2010
1,100
Precision 23 Perry Hall,Baltimore County
Trailer is done, inspection (few things) turned in to 4 tires, inner, outer bearings on 4 wheels, brake lights. Just added 20% to the value of the boat package!!

The boat is home now, starting today. The mission is to get lights (especially on the ,mast )repaired and new spreader boots so I get the mast up to clear room below for the rest. Great news today, Installed the new switch/circuit breaker panel, started tracking the power from them. Bow and stern running light work and I have power to 2 circuits at the deck mount plug at the tabernacle. To me, this is a big deal, now investigating the steaming and anchor (mast top) lights on the mast.
As others advised, the tops of the chainplates (through the cabin top )will have to be resealed. Last nights rain gave me some insight to my wet future in the cabin.
Some have said to use silicon, but I`m kind of a 4200 fan. I`ll have to have some anyway to reseal the cockpit drains in the transom(standard procedure for Precisions). Would 4200 not also work on chainplate sealing?
 
kenn

kenn

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Apr 18, 2009
1,271
CL Sandpiper 565 Toronto
Don't use silicone on your chainplates.It may not seal properly, and I hear that nothing else will ever adhere properly to that area, without alot of prep work.

However, I am not 100% sure what would be best. One year I used 4200 as a caulk where our teak rubrail meets the deck edge, and over 3 years it shrank and failed to stay adhered.

So I'm also very interested in what people suggest for your chainplates, or as a good caulk for exposed joints.
 
JerryA

JerryA

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Oct 17, 2004
550
Hunter Hunter 170 Sandusky Bay, Lake Erie
Silicone

I've owned my P23 going on 7 years, and so far of the materials I've used to seal the chain plates, white silicone works best. You'll find that regardless of what you use that you'll most likely need to seal these each year. The chain plate moves ever so slightly with use. It could have something to do with the chain plates being so far inboard. I usually try to spend a night on the boat when it's going to rain just so I can verify no leaks.

JerryA
 

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Stu Jackson

Stu Jackson

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Feb 26, 2004
23,353
Catalina 34 224 Maple Bay, BC, Canada
4200 is not a good choice. I don't know the details of your chainplate but after years of using silicone, we've switched to Maine Sail's butyl tape.
 
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DAVA390

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Jul 13, 2010
1,100
Precision 23 Perry Hall,Baltimore County
Jeez, we`re all over the map on this one. Thanks everyone, I have some of MS tape I bought for the P18 forward hatch project. I`ll take a better look tomorrow, we are rained out here for the day now. I was kinda hoping to just seal around the edges, I guess with tape stuff has to be unbolted and pulled up?
 
D

DAVA390

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Jul 13, 2010
1,100
Precision 23 Perry Hall,Baltimore County
Stu thanks for the link, I just looked at it, very helpful.
 
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AnchorDragger

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Aug 28, 2012
53
Wavelength 24 Columbia, SC
JerryA said:
Butyl tape would probably work well too. Here's a couple pictures of the chainplates. Maybe I'll try the tape this year.

JerryA
Click to expand
Butyl tape, available from Amazon.com and Defender.com, is one of the top choices. See the comparison chart of sealants on page 83 of the April - May 2013 issue of Boat U.S. Magazine. Boatlife Life-Caulk, a polysulfide is a good alternative.

3M 4000 UV is usable but has some drawbacks. Stay away from silicone and polyurethanes.
 
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