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post #21 of 24 Old 11-15-2006 Thread Starter
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Oops. I'm showing my novice experience. Sorry. I meant deck.... Does this change the answer to my question then?
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post #22 of 24 Old 11-15-2006
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One of the big questions to ask yourself is do you want a 10 ft. paint job or a 10 in. paint job, the work and expense are inversly proportinal, If you bought an older 27 footer to play around the bay in a 10-15 k paint job might be a bit over the top, but a couple weekends and $150 for a decent 1 part topside paint will make it look much better than now, and last a few years, plus leave more in the kitty if you're not "Daddy Warbucks". Art.
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post #23 of 24 Old 11-15-2006
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Originally Posted by Rickm505
I would suggest that you take a few minutes and read the article. The PATTI test results are impressive, and will rewrite all the textbooks.

Do you have any idea of the liability this company would incurr if this data isn't solid?

Really..... think this through before insisting that hard data is wrong and you're the one who's right.


Rick in Florida
I've read the entire article that is on that link. The test panels were just that... test panels. They were not actual hulls or boats. The test panels were in a humidity chamber, not immersed in water.

What part of

Further, the tests you show only have 9 weeks worth of data. I would be far less skeptical and far more likely to accept the results if they had data from a wider variety of boats, rather than just test laminates, which are not subjected to the stress that boat hulls and decks are, and if the tests were for longer than two months. Also, in some of the graphs, the strength of the bond drops over 10%, which I certainly would consider significant. Particularly note that most of the graphs peak and then trend downwards. IF this trend continues, even at a decelerating rate, the amount of strength lost in the bond over a year would be highly significant.
did you not understand. I am looking at their data, and their testing methods...and saying that they would have to do a lot more testing before I believe that gelcoat on epoxy is as good as gelcoat on polyester or vinylester resin.

One is a purely mechanical bond—the other is a chemical bond, which results in the two layers becoming a single physical layer.

The graphs do show a drop in strength in most cases, but do not give you any idea what the long term strength would be, say in a year's time.

If you're incapable of understanding what I wrote....that's your problem.


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post #24 of 24 Old 11-15-2006
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Change the answer?

Originally Posted by Jotun
Oops. I'm showing my novice experience. Sorry. I meant deck.... Does this change the answer to my question then?

A bit. Painting a deck is more difficult and time-consuming than painting the topsides (hull), due to the masking and gear removal/reinstallation needed. I'd say its not a frequently done job, and to be avoided unless done professionally or very carefully. After all YOU can't see the hull while you're sailing, but the deck/cocpit is constantly in front of you, up close. If the deck is partially painted and the appearance is not satisfatory, unless the seller agrees to compensate for a pro job (say $150/foot, maybe more for a deck?) then I'd move on...more so than a hull question.
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