Blue "Stuff" oozing out of hull?????

[Chris Reinke]

I recently completed removing all the previous years of hard bottom paint (6 or 7 layers)and applied 3 coats of Micron CSC to my CD330. The bottom looks great! I went down to the boat to have lunch today and to enjoy the warm weather in New York. I noticed what looked like a dried drip of dark blue "stuff" seeping from an old patch job done by the previous owner. The "stuff" was dry to the touch and it has only been 48 hours since the last coat went on.

Does anybody have a clue as to what this is? I recall someone once mentioning something about a blue substance used in the layup process but I do not recall if this is a problem. Should I be concerned. I am scheduled to launch on Monday so any prompt information would be appreciated.

Thanks,
Chris




chris.reinke@transamerica.com

[Dana]

The multi layers of Epoxy Paint was "sealing" off an area of where the hull has absorbed moisture and it has reacted with uncured resin. If it is in a repair area, that area was probably for blister repair. But the area may not have been completely dried so it is still actively reacting.

I know that you have already completed your painting but I would recommend the following for consideration, especially if you have not noticed any additional oozing or blisters.

For that one spot, grind out that one spot (size of quarter). I.E. gel coat depth only.
scrape out the thin layer of wet purple mat between the gel coat layer and laminate. Swab the exposed laminate layer with acetone to remove purple color. Sit back and wait a bit. Note if purple specks come back at spots (meaning that a few laminate fiberglass strands are wet and have wicked into laminate.) If not, you can coat the exposed laminate with a layer of West Expoxy 105 resin. When it dries, then fill the removed gel coat area a little higher than the surrounding area with two part epoxy filler like Interlux A and B. It will shrink a bit in hieght so building it up slightly will eliminate reapplication. Then palm sand the area fair and recoat with bottom paint as a spot repair.

If the purple spots do reappear at the end strands of the laminate fibers ( I think they will) I would let it dry for a couple of days as a minimal and then do the above after cleaning it again with acetone.

The purpose of all this is strictly to determine what is going on...wicking into the laminate or just the mat under the gelcoat. Just the mat will generally give you a blister, a wick area into the laminate may not.....but I would certainly try to seal it from further action....

Dana
_______________________

I recently completed removing all the previous years of hard bottom paint (6 or 7 layers)and applied 3 coats of Micron CSC to my CD330. The bottom looks great! I went down to the boat to have lunch today and to enjoy the warm weather in New York. I noticed what looked like a dried drip of dark blue "stuff" seeping from an old patch job done by the previous owner. The "stuff" was dry to the touch and it has only been 48 hours since the last coat went on.

Does anybody have a clue as to what this is? I recall someone once mentioning something about a blue substance used in the layup process but I do not recall if this is a problem. Should I be concerned. I am scheduled to launch on Monday so any prompt information would be appreciated.

Thanks,
Chris

dareius@aol.com

[Catherine Monaghan]

Ditto everything in Dana's post....and it's called "Cape Dory blue ooze". It's cobalt that was used during the curing process.


catherine_monaghan@merck.com
CD32 <a href="http://www.hometown.aol.com/bcomet/real ... ization</a>, #3
Rahway, NJ
Raritan Bay

I recently completed removing all the previous years of hard bottom paint (6 or 7 layers)and applied 3 coats of Micron CSC to my CD330. The bottom looks great! I went down to the boat to have lunch today and to enjoy the warm weather in New York. I noticed what looked like a dried drip of dark blue "stuff" seeping from an old patch job done by the previous owner. The "stuff" was dry to the touch and it has only been 48 hours since the last coat went on.

Does anybody have a clue as to what this is? I recall someone once mentioning something about a blue substance used in the layup process but I do not recall if this is a problem. Should I be concerned. I am scheduled to launch on Monday so any prompt information would be appreciated.

Thanks,
Chris

catherine_monaghan@merck.com

[Fred]

What it is, is water, mixed with cobalt. cobalt is a promoter used in polyester resin. You should have your boat checked with a moisture meter. Hopefully just the repaired area is wet.

Good Luck

[sloopjohnl]

a heat lamp works well for drying out the wetness. just don't get too close to the bottom paint or gel coat, you don't want to melt either.

I recently completed removing all the previous years of hard bottom paint (6 or 7 layers)and applied 3 coats of Micron CSC to my CD330. The bottom looks great! I went down to the boat to have lunch today and to enjoy the warm weather in New York. I noticed what looked like a dried drip of dark blue "stuff" seeping from an old patch job done by the previous owner. The "stuff" was dry to the touch and it has only been 48 hours since the last coat went on.

Does anybody have a clue as to what this is? I recall someone once mentioning something about a blue substance used in the layup process but I do not recall if this is a problem. Should I be concerned. I am scheduled to launch on Monday so any prompt information would be appreciated.

Thanks,
Chris