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Go Back   SailNet Community > On Board > Gear & Maintenance > oh what to do with a leaky hull-deck cavity?
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Thread: oh what to do with a leaky hull-deck cavity? Reply to Thread
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Topic Review (Newest First)
06-05-2013 02:34 PM
flo617
Re: oh what to do with a leaky hull-deck cavity?

Wouldn't polyurethane foam be more appropriate in this condition? It would swell and fill-up the entire area. It would cure properly even if the inside is still moist. I can slice the joint into sections (say 6 foot long each for example) and fill them up one at a time, controlling that the area gets filled with the foam before it begins to expand.

However I've never used that material before.
06-04-2013 01:46 AM
flo617
Re: oh what to do with a leaky hull-deck cavity?

Well the boat is a Columbia29 mkii. It has a classical inward flange rather than the H-joint from more recent columbias. That cavity you see is between the flange (with the layup visible) and the bottom of the deck sandwich with can be seen on the top side of the pic.

As you can see in the picture I cut an opening in the tabbing inside the boat (I since then reglassed it because I cannot sail with that open, when I tried I made a pond of my quarterberth (cushions were out thankfully).

Florent
06-03-2013 12:19 PM
pauloman
Re: oh what to do with a leaky hull-deck cavity?

you want to use a low viscosity, solvent free (no place for the voc stuff to flash off) epoxy that will bond to wet or damp surfaces. Very similar to the common repair of voids or delamination of deck cores.

paul
06-03-2013 11:59 AM
tommays
Re: oh what to do with a leaky hull-deck cavity?

More specific info about what boat you have will give result in much better YOUR boat specific answers
06-03-2013 11:32 AM
flo617
oh what to do with a leaky hull-deck cavity?

Hello, I recently got curious and dug a little trench on the inside tabbing of my hull-deck joint.

I found that there is a cavity about 1/4in between the inner flange and the deck behind the tabbing. I also found out that water came gushing through inside as soon as I started crashing through the waves (or vice versa).

Although I reglassed the trench, I am not too happy with having an aquaduct inside my boat . I was thinking on opening the tabbing at regular intervals to inject 5200 or polyurethane foam or (maybe even epoxy although I would need to remove all the humidity first).

Does 2 part polyurethane or 5200 adheres well in a humid environment? (Not soaking wet but with traces of water). Removing the toe rail with the nuts glassed in is too big a project for me if I intend to sail the boat anymore this season.

Thanks,

Florent

 
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