Use water color to find location of deck leak?

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benethridge
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Use water color to find location of deck leak?

Hi, all.

I have yet another leak into my forward berth.  Fortunately, it does not leak onto the cushions this time, but leaks down low into the lower storage area and pools there beneath the lower drawers.  Sometimes it is saltwater; other times it is fresh.

To find the source, I'm thinking about painting the entire inside of the hull with some kind of non-permanent paint like, say, water color...or perhaps use blue or red chalk powder like the kind carpenters use in a chalk line tool. This would be a dye which I could simply wash away COMPLETELY with a hose once the dribble trail marks show me where the leak is.

I am always concerned about "unintended consequences" when I try stuff like this, so I thought I would check on the forum first, to see if anyone else has experience with this kind of procedure.
 

Ben Ethridge
Miami, FL
1984 MK1 Hull# 263

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Haro
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In my case - the water leak was from the windlass shaft seal. To confirm that - remove the V-birth panel so that you can see the windlass motor and have someone else spray ample amount of water on the windlass from above for a bout 5 minutes.
The reason for salt and fresh water is both from ocean spray and when you rinse the boat.

To trace the water - I lay paper towel on the hull inside.
 

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benethridge
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Paper towels - yes, I think that will work. Thanks.

I'll lay a long strip (or two or three) of them lengthwise down each side of the hull, tape the top with masking tape, and then see where they get wet. Do they leave a dribble pattern after they dry?  or do you have to check them for wetness?
 

Ben Ethridge
Miami, FL
1984 MK1 Hull# 263

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Haro
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I use toilet tissues. When they get wet - they will crumple up and look different. More than likely when you arrive it will be dry. You can try and lay clear cellophane tape, from the kitchen, over them  to keep them wet longer until you arrive.

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benethridge
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I'm fine with the dry crumpled look...long as they don't flush themselves down into the bilge pump :-)

Seriously, thanks for the ideas!

Ben Ethridge
Miami, FL
1984 MK1 Hull# 263

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