Ablative vs. Hard Paints.... - Page 2 - SailNet Community
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post #11 of 43 Old 05-04-2014
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Re: Ablative vs. Hard Paints....

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Originally Posted by MedSailor View Post
I am planning on taking my boat out of the water for several months and I have petit trinidad hard paint on it. What's going to happen? Will it rust? Will it flake? Will it not work when I go back in? Will I sink?
My understanding is that Trinidad can withstand about 72 hours out of the water. Longer than that and you will have to repaint.
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post #12 of 43 Old 05-04-2014
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Re: Ablative vs. Hard Paints....

I live way upriver in brackish although mostly fresh water. Hard paint was awful for me. We were commissioned with Petit Trinidad SR on our bottom. First, didn't adhere very well to my iron keel, although that was likely the prep that was done by the dealer. Second, the paint nearly immediately started getting a slime layer on it. I had to have a diver once a month.

After my first haul, I stripped to bare bottom, epoxy coated, and then applied 2 layers of West Marine PCA Gold with Irgarol, which I hear is bulk repack of a major brand of ablative (it may be Petit). I love the stuff. $150 a gallon (friend has port supply account) and it lasts a loooong time. I have it dived only once every 8 weeks now and there is no fouling at all. When I use the boat, I get a clean bottom.

But again, its all dependent on your local conditions. Because I'm in almost fresh water, I dont worry about hard growth nearly as much as I worry about soft slime growth.

S/V Jendai
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post #13 of 43 Old 05-04-2014 Thread Starter
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Re: Ablative vs. Hard Paints....

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Check the Pettit web site.
Nice, succinct comparison on their site. Thanks.
Pettit paint comparison

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post #14 of 43 Old 05-04-2014
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Re: Ablative vs. Hard Paints....

Around here ablatives are very popular for cruisers. Many don't haul every year and our climate allows for year round sailing without need to avoid ice as they do in the east. This makes a multi-season ablative a good choice. We do not have any laws regarding in water scrubbing to worry about as does Washington State. As the chart states ablatives have a more consistent performance throughout their life. And if you do haul for any length of time their effectiveness doesn't diminish.
Pettit Horizons is the most popular choice in the store I work in and has just been lowered in price - by Pettit - to about $169 a gallon.

Here's the comparison:


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post #15 of 43 Old 05-04-2014 Thread Starter
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Re: Ablative vs. Hard Paints....

Hmmm.... makes me wonder in the comparison.....

What do the freighters use? Ablative or hard? The navy apparently uses ablative (based on the surplus paint I found recently).

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post #16 of 43 Old 05-05-2014
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Re: Ablative vs. Hard Paints....

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[IMG]
In a recent post I put up this photo which everyone told me was ablative paint build up. Does this mean that ablative can still build up, but just not as bad or as fast? Does this photo represent 20+ years of buildup and it would be worse if it was hard paint?

I am planning on taking my boat out of the water for several months and I have petit trinidad hard paint on it. What's going to happen? Will it rust? Will it flake? Will it not work when I go back in? Will I sink?

MedSailor
The most common reason for ablative build-up is annual painting followed by little actual sailing during a short season. They simply don't wear it off. With a 2-year ablative and a bit more sailing, build-up will be nil. Generally by the time I paint, I can see the prior coat.

The best advice is always to ask around your area. Ask people who use their boats the same way you will.

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post #17 of 43 Old 05-05-2014
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Re: Ablative vs. Hard Paints....

Wait. My boats in the same area as the OP(unless he is talking about his SF boat). It's been out of the water since December. I wasn't going to bottom paint it because the paint still so pretty new and looks good, but did it lose it's efficacy by being out of the water?


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post #18 of 43 Old 05-05-2014
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Re: Ablative vs. Hard Paints....

What bottom paint is on your boat?

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post #19 of 43 Old 05-05-2014
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Re: Ablative vs. Hard Paints....



New Paint Micron extra



Season one after power washing


Season two after power washing and ready for a quick scuffing and the next coat of paint


I life in a super high fouling area due to a out of spec sewer plant that discharges crazy amounts of barnacle larvae food

As such in the warmer times you must wipe off the larvae every two weeks or they will form hard growth no matter the paint used

The two power washings take a huge toll on the pint BUT you have to do it or the sting is horrible

After the first two year experiment I have gone to using enough paint for one season as it seems to perform better

1970 Cal 29 Sea Fever

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If a dirty bottom slows you down what do you think it does to your boat
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Last edited by tommays; 05-05-2014 at 07:49 AM.
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post #20 of 43 Old 05-05-2014
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Re: Ablative vs. Hard Paints....

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Originally Posted by northoceanbeach View Post
My boats... been out of the water since December. I wasn't going to bottom paint it because the paint still so pretty new and looks good, but did it lose it's efficacy by being out of the water?
If its a hard paint, then the answer is likely yes.
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