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Old 19-03-2013, 16:04   #1
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moist cabin floors

hi all, i'm looking for some help in figuring out where the moisture on the cabin floors is coming from. when i bought my boat last summer the salesman thought it was coming from condensation from the ac/ heat unit at the evaporators, but i'm getting it without either unit in operation, both fore and aft. the evaporators happen to be at thec bulkheads. i have searched for condensation on the hull and leaks but am finding none . its been going on for years it seems, the laminate is coming off at these areas. thanks for any suggestions.
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Old 19-03-2013, 16:13   #2
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Re: moist cabin floors

Its gotta be a leak. But need more info to be of help. Is it near a bulkhead, or can you rule out it running down a wall/bulkhead? Are there hatches above? Do you have a headliner, and if so is there a seam above the leaks? Etc.
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Old 19-03-2013, 17:00   #3
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I have dealt with the same problem on my boat.

Start with the tanks. Does it smell like holding tank water? If so you know where to start looking. Either way, access the tanks and look for leaks at the tanks and around the pressure pump and water heater. Obviously check with the system pressurized. While we are at it turn off the pressure pump and see if that has an impact.

If it is not leaking from inside, some things I have addressed on Cynosure- re-bedding the genoa tracks and where the chain plate goes through the deck. If there are issues with these, check for core rot in the surrounding deck area.

None of thar repairs are that difficult just a PITA.

Bill
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Old 19-03-2013, 18:12   #4
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Quote:
Originally Posted by rockborn View Post
hi all, i'm looking for some help in figuring out where the moisture on the cabin floors is coming from. when i bought my boat last summer the salesman thought it was coming from condensation from the ac/ heat unit at the evaporators, but i'm getting it without either unit in operation, both fore and aft. the evaporators happen to be at thec bulkheads. i have searched for condensation on the hull and leaks but am finding none . its been going on for years it seems, the laminate is coming off at these areas. thanks for any suggestions.
hi,
you floor, but not bilge?
check all corners around the floor.
I was getting water trough mast inside. drain hole in mast foot was blocked and mast bottom filled with fresh rain water.
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Old 19-03-2013, 19:47   #5
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Re: moist cabin floors

All the floors are simply covered with water? Or, what, more precisely?
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Old 20-03-2013, 18:24   #6
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Re: moist cabin floors

thanks for your posts. the moisture areas are both about 2 square feet each and are located port side, at the fore and aft bulkheads right where the ac/heat unit evaporators are. not near the compressors.i have checked the headliners and they are dry, except for slight condensation when the outside temp is below freezing and the humidity is high. its not sewage and the water supply lines are not in the vicinity.
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Old 20-03-2013, 19:16   #7
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Re: moist cabin floors

It might be worth putting down some polythene on those sections of floor after frying them off. Tape the edges down, then see if there's more water forming under the plastic, or on top of it. If it forms on top of the plastic then it may be coming from the vents. If it is coming up through the floors, it will be under the plastic. If it is somehow moisture being condensed as it comes out of the vents and hits the cold floor, you can check for that by putting down some insulation and seeing if that stops it from forming.
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Old 20-03-2013, 20:33   #8
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Re: moist cabin floors

Sprinkle talcum powder in all areas you think it may be coming from. Then wait a couple of days. Not only will your boat smell like a baby, there will be tracks in the talc for you to follow back to the source of the leak :-D
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Old 21-03-2013, 05:07   #9
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Re: moist cabin floors

great ideas. thanks
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