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Jimmy's picture
Jimmy
Last seen: 1 week 2 days ago
Joined: 1/12/08
Posts: 72
Any tips for rebedding the main companionway hatch hood

Hi All,

I need to rebedd my main companionway hatch hood.  I am wondering what is the best caulk material to use and any other tips that can help.  

Thank you very much,

Jimmy, Second Wind 2058

Jimmy,
Secondwind
Hull No. 2058

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Jimmy,
Secondwind
Hull No. 2058
pkeyser's picture
pkeyser
Last seen: 20 hours 9 min ago
Joined: 5/18/13
Posts: 315

Jim-
If mildew staining the existing sealant beed is your main issue (vs. cracking, shrinking and leaking) try scrubbing with a Mister Clean scuff eraser sponge.

Paul

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Paul & Wendy Keyser
"First Light"
Newburyport MA/Rye NH
2005 C36 MKII #2257
Wing, M35B

two-rocks
Last seen: 1 hour 54 min ago
Joined: 8/11/17
Posts: 12

I need to do the same, but...

My comapnion hatch hood is off the boat for the winter and I am replacing most of the core. When shopping for boats many had water in the core of the hatch hood. If the caulk even 'slightly' looks like the edge might be letting go it can lead to problems. The screws are another area that is not the best design, so those will get solid glass. The lazarette piano hinge is another area given little thought....20 screws right into the core....hmmm

On the plus side, all the deck area around the chainplates on my '05 (newer design ball and socket) is solid glass - a good suprise. The surveyor said they were solid when sounding the hull, but I didn't believe him ;-)

edit: was thinking sikaflex 295-uv caulk but was going to research more and call catalina as well....

LeslieTroyer's picture
LeslieTroyer
Last seen: 4 days 5 hours ago
Joined: 3/13/16
Posts: 392
I like butyl - the best is from compass marine. Marinehowto.com. The posts there are great at showing how to use it. But spoiler - champher the holes in the deck to provide more volume for the sealant. In really severe areas, I do the routing, epoxy fill and redrill ( helm guard, stantions...)
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Les & Trish Troyer
Mahalo 
Everett, WA
1983 C-36 Hull #0094
C-36 MK 1 Technical Editor. 
dlincoln3's picture
dlincoln3
Last seen: 2 hours 43 min ago
Joined: 4/24/16
Posts: 45

I'll be following this discussion.  I have a phantom leak somewhere, and I suspect it is the main hatch cover.  During the off season, I get water dripping from the port dorade into the dry storage locker.  I have rebedded the dorade twice and it still leaks.  But during the sailing season, it doesn't really leak at all.  The only difference is that I have a dodger installed all summer, which covers the main hatch.  

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Don Lincoln
"Nancy Lynn"
1993 Catalina MK1.5, Hull 1238
LaSalle, MI (Lake Erie)
Universal M-35AC
LeslieTroyer's picture
LeslieTroyer
Last seen: 4 days 5 hours ago
Joined: 3/13/16
Posts: 392
My good friend from the C34 world, Stu Jackson had a drip from the dorade. I helped seal it up but the leak continued until he resealed the hand holds. Les
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Les & Trish Troyer
Mahalo 
Everett, WA
1983 C-36 Hull #0094
C-36 MK 1 Technical Editor. 
Alain Croteau's picture
Alain Croteau
Last seen: 3 days 10 hours ago
Joined: 8/28/12
Posts: 37

dlincoln3: I'm experiencing the same issue. I recently removed the teak rails and hatch cover. I found redundant screw holes adjacent to most of the ones actually used. it appears the rails and hatch cover may have been slightly out of place?? when cover and rails were re positioned the redundant holes were not sealed and some were right at the edge of the flange so that a vertical open crack exists (happens to be in line with cowl vents boh sides) that allows any water that gets in the sliding hatch groove to leak down to cowl vent opening. only leaked sometimes after heavy rain or lengthy beat with heavy water over bow to companionway. next spring I'll seal all holes with epoxy, redrill only needed ones and seal with butyl.

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Alain Croteau
"Veritas"
C36 #1226 SR/wk
Yanmar 3JH2
Kingston, Ontario

two-rocks
Last seen: 1 hour 54 min ago
Joined: 8/11/17
Posts: 12

MkI and MKII are different in the hatch cover area - the hatch civer for the MKII needs a sealant between the hatch hood and the surrounding deck area (the hatch hood sits flush with the deck). Love butyl tape, but for this application it's a no go.

dlincoln3's picture
dlincoln3
Last seen: 2 hours 43 min ago
Joined: 4/24/16
Posts: 45

I did think of the hand hold. The PO rebedded that, and I'm assuming (maybe foolishly) that it's still OK. I rebedded the rope clutch next to it. The only other possibilities are that hand rail, the cabin top winch, or the hatch hood. I guess I have to make the time to rebed them all and see if that solves it.

Sent from my SM-G950U using Tapatalk

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Don Lincoln
"Nancy Lynn"
1993 Catalina MK1.5, Hull 1238
LaSalle, MI (Lake Erie)
Universal M-35AC
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