Core Repair Under Cowl Vents

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Stu Jackson

Mike, I, too, rebedded my cowl as the "obvious" first step.  Thought the leak was stopped because the water stopped dripping.  That first rebed was at the Roche Harbor Catalina Rendezvous in May 2017.  Les Troyer and John Shepard were great helpers.  In fact, they were so enthusiastic that I watched them gather the tools (long "blade" on John's power drill, Les working out the butyl tape I'd supplied), that they had the work done before I could ask them to stop and let me even try to help! :clap

The leak, which manifested itself by drips through one of the three screws holding the trim ring in (I removed the ring and saw a smaller version of your cracks), stopped for awhile, only to reappear (when it started raining again).  I tried that again; definition of insanity, right?

Then I did the traveler track.  Stopped, but then it rained, showed up later in the winter and early spring.

I saw Les again in early April this year, demanding my money back as part of the warranty!!!!!! :cry4` :cry4` :cry4`  We both laughed.

He and I traced it down to the fairleads for some of my aft led lines that run back to the cockpit (two small bullet fairleads, small screws, but could be).

The only other thing above that hole inside up on the deck is the hatch wood trim.

It's been dry here for months, no drips.  I can readily believe your results with the hose, but my experience was it took longer to reappear.

I was tempted to just slather Marine Tex inside and stop the drips, but, like you, I want to find the source and stop that.

That's where the link I posted could come in handy.

With my luck, I'll get around to doing that work only once it starts raining again!  Just like when I rebedded my saloon hatch!

Good luck, please keep us posted.
Stu Jackson, C34 IA Secretary, #224 1986, "Aquavite"  Cowichan Bay, BC  Maple Bay Marina  SR/FK, M25, Rocna 10 (22#) (NZ model)

"There is no problem so great that it can't be solved."

derekb

Mike, I'm also watching with interest. I have drips coming from the vent above my galley, so I may be in for the same fix.

Regards,
Derek
Derek Buckmaster
Esprit, 1986 C34 Mark I #29. Fin keel, Universal M25.
Geelong, Victoria, Australia

lazybone

Could it be the Mainsheet traveler attachment points.  They are slightly uphill and sort of close by.
Ciao tutti


S/V LAZYBONES  #677

GYPSEA

I too had this issue..... I chipped away at it all. Then took an allen wrench on a drill and got back into the hole as far as possible or until I didn't see any more wet wood. When i reached in on particular large section, I found a wad of duct tape - there was a bit of a gap!
From the gap - I was able to get to dry wood all the way round except out toward the side of the boat. I drilled a couple holes about 5 inches away from the dorade hole toward the side of the boat just enough to verify the wood shavings were dry.....
Then I glassed it up and painted it white.

Noah

Gypsea- Did you determine what was leaking/what was causing your wet deck?
1990 hull #1014, San Diego, CA,  Fin Keel,
Standard Rig

rmbrown

Could you determine the brand of duct tape?  I'll likely need to replace mine.

:shock:
Mike Brown
1993 C34 Tall Rig Wing Keel Mk 1.5
CTYP1251L293
Just Limin'
Universal M-35AC

Noah

1990 hull #1014, San Diego, CA,  Fin Keel,
Standard Rig

rmbrown

Noah:

I have, and I considered them, but I ended up getting the solar day/night vents instead.  I might regret that decision.  I'll let you know!

Mike
Mike Brown
1993 C34 Tall Rig Wing Keel Mk 1.5
CTYP1251L293
Just Limin'
Universal M-35AC