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Old 08-07-2017, 12:10   #1
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Location: Whitsunday Islands, Australia
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Which anti foul???

We are on north east coast of Australia and will spend around 60% of our time in a marina so any recommendations on a suitable antifoul would be helpful.
We have in theory, always gone for the more expensive 'international' one or Micron 66 I think it's called before but can't say we are impressed. We still find the need to rub it down every few months to keep it clean and because it's ablative, every time we do that, more antifoul comes off.
We have sen a few hulls with blue anti foul, does anyone know what it is and how good it is?
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Old 08-07-2017, 12:24   #2
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Re: Which anti foul???

Call around to some of the boatyards near you and ask what they are applying. That should narrow down the choices.

People who have owned boats for a while in your area already know what works for your area and will be applying that type of anti-foulant paint.
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Old 09-07-2017, 07:32   #3
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Re: Which anti foul???

Quote:
Originally Posted by amandasearle View Post
We still find the need to rub it down every few months to keep it clean and because it's ablative, every time we do that, more antifoul comes off.
Apparently you are laboring under the assumption that anti fouling paint will eliminate fouling altogether. It will not.
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Old 09-07-2017, 08:11   #4
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Re: Which anti foul???

Most people think they should scrub every two weeks for optimal performance.

Anyway....you need a lot of copper to discourage marine growth. Plenty of options there. I went with Petit Trinidad though I have not applied it yet. Weighs about 20 lbs/gallon due to copper content. Copper is heavy.

Ablative paints are applied every year. Copper coatings are supposed to last 5-10 years.

I don't like ablative copper coatings, if they exist, as they issue a lot of copper into the water.
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Old 09-07-2017, 09:17   #5
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Re: Which anti foul???

Wow. Virtually every statement in this post is inaccurate.

Quote:
Originally Posted by softdown View Post
Most people think they should scrub every two weeks for optimal performance.
Umm... what? Cleaning frequencies vary widely from region to region, but nowhere in the world is a 2-week cleaning schedule considered normal. Nowhere.

Quote:
Originally Posted by softdown View Post
Ablative paints are applied every year.
Again... what? Ablative paints (while not as long-lived as hard paints) can last 2-3 years. Most do not need to be reapplied annally.

Quote:
Originally Posted by softdown View Post
Copper coatings are supposed to last 5-10 years.
No hard paint will provide anti fouling protection for 5-10 years. They just aren't designed to do that. This kind of coating will do it's job for 3-4 years, max. Maybe you're referring to copper-loaded epoxies (like Coppercoat), which do have long lifespans, but these are not paints. They are epoxies.

Quote:
Originally Posted by softdown View Post
...ablative copper coatings, if they exist, as they issue a lot of copper into the water.
I suspect you don't understand how anti fouling paints work or the terminology that is used to describe them. Most anti fouling paints use some form of copper as their biocide. This includes ablative paints. There are many, MANY copper-based ablative paints available worldwide. And guess what? As a group, ablatives tend to have less copper than many of their hard paint counterparts. And a paint that is manufactured with a smaller amount of copper will leach less copper throughout its life than a paint that is formulated with a greater amount of copper. Ablatives do not leach more copper than other types of paint. They all leach exactly the amount with which they are made.
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