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Old 30-05-2013, 04:32   #1
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Cuprotect antifoul and electrolysis

Does anyone have any personal experience with Cuprotect antifoul and electrolysis?

How can CuProtect be removed? or should I just prime somehow and overcoat? Will this get rid of any electrolysis issues?

Wendy
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Old 30-05-2013, 09:53   #2
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Re: Cuprotect antifoul and electrolysis

If you have a metal boat, you should have an insulating coat between the metal and the anti-fouling. We use a coal-tar epoxy.

If it is not a metal boat, it is extremely unlikely that the anti fouling paint will be causing electrolysis.

What "electrolysis issues" are you having? If it is caused by the anti-fouling, there would be discoloration for an inch or two around through hull fittings.

Before you spend money trying to fix something that ain't broke you need to determine the actual cause. If you are on shore power the first line of defense is a galvanic isolator. You can find them for under $100 and it will pay for itself in saved zincs.
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Old 30-05-2013, 10:11   #3
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Re: Cuprotect antifoul and electrolysis

See this thread: Losing antifoul from metal hull fittings

Fiberglass boat, discoloration and peeling around metal hull fittings only. Antifouling actually an epoxy-copper coating and not paint. No shore power, galvanic isolator installed.

Wendy, does Cuprotect provide any technical assistance? My guess is that you just clean and reprime the metal fittings only using the cuprotect coatings and application guidelines.

Mark
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Old 30-05-2013, 21:39   #4
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Re: Cuprotect antifoul and electrolysis

Hi Mark, Cuprotect can only be fixed by dealerships/franchises. Mine was originally applied in Dubai in 2009, reapplied to keel in 2010 and I still have problems with it. They have agreed that to reapply to the keel under warranty, but their technical rep reckons that the metal fittings issue is stray current. They recommended priming the bare metal with primocon,and I then antifouled over that with a compatible product. However, after two months it had come off again. I did not know how to check for stray current but now do (I think). The previous thread was mine as well! Further internet research made me begin to wonder if Cuprotect was the source of the problem, and whether I should try and switch to something more straightforward.

Other issue is, I live in Wales, boat is in Croatia and the nearest franchise is in Turkey
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