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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 vanishing blisters???		  New Topic  Topic Locked
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Gary B.
Admiral

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USA
969 Posts
Initially Posted - 05/13/2002 :  13:44:00  Show Profile
Friends: I bought a C-25 this winter that I knew had some blisters within 8" or so of the waterline. It's been sitting under cover on the trailer since December. I went out to repair them before bottom paint. Voila! No blisters! Well, one, actually. One boatyard said to barrier coat it now, then bottom paint. I just want to sell the boat. I have another C-25, but I don't want to sell this one if the blisters will just re-appear; I have a conscience. BTW: I am not sure I could find the ones that disappeared; I don't have a really great "ear" for such things....advice?
Thanks,
Gary SK/SR #685, and "project SK/SR #496" "For Sail" near Portland OR
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OJ
Master Marine Consultant

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USA
4382 Posts
Response Posted - 05/13/2002 :  15:27:54  Show Profile
As you probably know, blisters dry out over time when on the hard and shrink to a point where they're hardly noticable (compared to when you first pull the boat.)
Instead of wasting effort, barrier coat and bottom paint, why not subtract the material costs from your initial asking price. The new owner won't have to remove same <font color=blue>if</font id=blue> the blisters should happen to reappear, even with barrier coat.
There's an easy (and earless) way to find the blisters that have shrunk, but that's another thread.
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Bristle
Admiral

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USA
834 Posts
Response Posted - 05/13/2002 :  21:36:05  Show Profile
<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>
There's an easy (and earless) way to find the blisters that have shrunk, but that's another thread.
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>
Why not this thread? Let your fingers rest and get back to us! <img src=icon_smile_tongue.gif border=0 align=middle>

Dave Bristle, 1985 C-25 SR-FK #5032 "Passage" in CT
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Dave Seely
1st Mate

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46 Posts
Response Posted - 05/13/2002 :  21:59:06  Show Profile
Speaking of blisters, I stoped to look at an old Reynolds 21 (a strange catamaran) several months ago. The owner had died and the boat had been sitting in a field several years. One side of one of the hulls had blisters on it but not just below the water line, they were all over the one side of the hull. I couldn't understand how a boat could have blisters after sitting out of the water that long. Couriosity got the best of me last week and I went back to the boat, took a key and broke open one of the blisters and sure enough the foul smelling thick liquid squirted out. Can anyone explain how a boat gets blisters sitting in a field?
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Bristle
Admiral

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USA
834 Posts
Response Posted - 05/13/2002 :  23:21:10  Show Profile
<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>
...sure enough the foul smelling thick liquid squirted out. Can anyone explain how a boat gets blisters sitting in a field?
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>
Nope... But be VERY AFRAID! <img src=icon_smile_shock.gif border=0 align=middle> Actually, I'd guess that it has major water intrusion on the deck, which may be cored, and that water has seeped into the hull laminate causing major delamination--maybe from freezing and thawing if you get that in your neighborhood.

Dave Bristle, 1985 C-25 SR-FK #5032 "Passage" in CT

Edited by - bristle on 05/13/2002 23:26:46
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Ken Cave
Navigator

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USA
148 Posts
Response Posted - 05/13/2002 :  23:46:11  Show Profile
There are many kinds of blisters out there lurking on fiberglass boats, and most of them are not the worrying kind! When I purchased my Cape Dory, I had six blisters which were fixed in two minutes with a grinder!

And, the warmer the water, the more chance of blisters!

David Pascoe (www.yachtsurvey.com/) has about the best information concerning blisters I have ever read (besides his board has about the best information anywhere!!)

Your blisters are not the kind to be concerned with-and he will tell you why.

Ken Cave
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.