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post #1 of 27 Old 12-19-2013 Thread Starter
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Bottom Paint Question

4 years ago I hulled out, sanded and applied Ameron ABC 3 bottom (ablative) paint:
ABC 3 anti fouling paint
Paint performed well, and is still performing well except at the bottom of the keel and a few other areas where I get rapid hard growth (1 inch thick in 1 month).

I am planning to use the Ameron ABC 3 again as I figure it works and it will adhere with no problems. But others say they like Petit Trinidad paint. This looks to be a good paint and I was considering it, yet I see where it is a hard modified epoxy. Seems I might have adhesion problems and I would think when the next haul out comes, more sanding of the old paint would be required.

Thoughts on the two paints?
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post #2 of 27 Old 12-19-2013
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Re: Bottom Paint Question

Call Petit and ask them if their stuff will stick to Ameron ABC3. They'll tell you what they know.
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Re: Bottom Paint Question

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Call Petit and ask them if their stuff will stick to Ameron ABC3. They'll tell you what they know.
Could call them. I have checked their web site and it looks as if your bottom paint is adhered, Trinidad can go over it and will stick- in theory anyway...

But other question is what is benefit of a hard paint such as Trinidad? Seems like it just makes more work when time to repaint, which looks to be in 4-5 years weather using ABC 3 or Trindad. So what is benefit of Trinidad?
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post #4 of 27 Old 12-19-2013
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Re: Bottom Paint Question

Trinidad is the best performing anti fouling paint available in the U.S. (IMHO) but if you are happy with your current paint, why switch?

BTW- it is likely that Trinidad is compatible with ABC 3.
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post #5 of 27 Old 12-19-2013
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Re: Bottom Paint Question

If your going to change paints why not take all the old stuff off, use the recommended factory primer for your new paint and then you won't have to worry about the adhesion issue.

Bottom paints are a lot like anchors. Everybody has his own theory. If your getting good service from your current paint stick with it.


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post #6 of 27 Old 12-20-2013
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Re: Bottom Paint Question

Don't take this from me, ask Pettit, but I am fairly sure you can't put a hard bottom paint straight over an ablative. You'd need to at least take the ablative off.

Which leaves you doing a lot of prep work, to switch from a paint that you know is working well.

Don't get me wrong, I like Trinidad too, but there are limits to the lengths I'd go to to install it....

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Last edited by MarkSF; 12-20-2013 at 01:50 AM.
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post #7 of 27 Old 12-20-2013
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Re: Bottom Paint Question

I was considering putting a hard bottom paint such as Trinidad when I redid the boat bottom(barrier coat) this past summer; however, I was told that hard bottom paints lose their effectiveness if out of the water for an extended period. I ended up going back to an ablative since the boat was to remain on the hard until next summer.
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post #8 of 27 Old 12-20-2013
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Re: Bottom Paint Question

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I am fairly sure you can't put a hard bottom paint straight over an ablative. You'd need to at least take the ablative off.
This is a common misconception. Most copper-based paints are compatible with each other, regardless of whether they are hard or ablative paints. It's all in the preparation (as the case with most painting projects.) But removal of an ablative before putting on a hard paint is typically uneccessary.
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post #9 of 27 Old 12-23-2013 Thread Starter
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Re: Bottom Paint Question

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Trinidad is the best performing anti fouling paint available in the U.S. (IMHO) but if you are happy with your current paint, why switch?

BTW- it is likely that Trinidad is compatible with ABC 3.
I probably will just stay with the ABC3. It is also about 1/2 the cost of Trinidad. But why do you like Trinidad? Seems the hard paints like Trinidad just make for more prep work to remove old paint when re-painting. Where as an ablative paint will wear away over its life and require less sanding when time to repaint.
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post #10 of 27 Old 12-23-2013
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Re: Bottom Paint Question

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I probably will just stay with the ABC3. It is also about 1/2 the cost of Trinidad. But why do you like Trinidad? Seems the hard paints like Trinidad just make for more prep work to remove old paint when re-painting. Where as an ablative paint will wear away over its life and require less sanding when time to repaint.
I like Trinidad because there is no other paint that is better at doing what an anti fouling paint is supposed to do, which is retarding fouling growth. Nothing lasts longer or performs better, IMHO.
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