What is the best antifouling you know

Discussion in 'Boatbuilding' started by dskira, May 25, 2010.

  1. CatBuilder

    CatBuilder Previous Member

    I get 24 months in the water from FL to Maine using Petit bottom paints with the highest copper solids available. You can tell... the can is heavy! I have used both the ablative and the standard paint of this brand and type with good results.

    West Marine / Port Supply has a competitively priced house bottom paint that is made by Petit and works well also.
  2. MatthewDS
    Joined: Mar 2010
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    Location: Juneau, Alaska

    MatthewDS Senior Member

    After lead was banned from bottom paint, we found that it was difficult to go more than a year between haul-outs and repainting the bottom, by adding 1-2 cups cayanne pepper to our standard gallon of bottom paint (interlux maybe?) we could go 2-3 years.

    I thought it was a harebrained idea, but it did seem to work.
  3. apex1

    apex1 Guest

    Concur, it works.

    I had twice the service life of the antifouling (from 18 month to about 36) using Hempel products and a really hot (habaneros) chilli.

  4. Stumble
    Joined: Oct 2008
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    Stumble Senior Member

  5. hoytedow
    Joined: Sep 2009
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    Location: North of Cuba

    hoytedow Carbon Based Life Form

    I also have been told this worked by a boatyardsman on the Hillsborough River who used this method back in the 1970's.
  6. apex1

    apex1 Guest

    No need,

    we had that discussion here a several times.

    In the early 90ies I was told that, and tried it in the mid 90ies. Over 100.000 miles at sea it worked.

    The capsaicin content really makes a difference, so, Wal Mart is not your supplier.

  7. Gypsie
    Joined: Apr 2005
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    Location: Lombok Indonesia

    Gypsie Randall Future by Design

    For those of you sailing around the Malaysian peninsular, you can always grab a few essential additives from "Mr. Chemical" in Chulia street in Penang. Not far down the road from "Love Lane"
  8. mydauphin
    Joined: Apr 2007
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    Location: Florida

    mydauphin Senior Member

    OK, but what is best bottom paint without copper for aluminum boat???
  9. WickedGood

    WickedGood Guest

    Tri Lux.

    I just happen to have about 3/4 of a gallon left over from my Alum Boat. She took 4 and 1/4 gallons to do the bottom and the lower units of the 3 outboards. Tri Lux goes for about $240 per gallon or Only $36.34 pint
  10. keysdisease
    Joined: Mar 2006
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    Location: South Florida USA

    keysdisease Senior Member

    What works best and is appropriate in one location may not be in another. For instance Wicked Good's recommendation for Tarr and Wonson works great in Maine but would look like a free shrimp buffet at a Real Estate convention to the barnacles and mussels here in South Florida.

    There are many differnent kinds of fouling and thousands of species, fouling is kind of like politics, its all local. Even in a given area fouling can change from one mile to the next. How far are you from the inlet? What kind of tidal flush do you get? Are you near a powerplant outflow? A sewage outflow? At anchor or at dock? The "sun" side of the boat will usually foul worse than the "shade" side if your docked. All can affect fouling so the guy that tells you his stuff works great may be truthful but he may also be pretty far up a freshwater stream.

    Ask around the local yards, for the freezing cold water in your neck of the woods where the boats come out of the water for the winter if you took a can of house paint and waved a piece of copper and a roll of tin foil over it it would probably work great for a season.

    Steve, in South Florida watching the barnacles grow.
  11. WickedGood

    WickedGood Guest

    They use Copper in Arizona

  12. PAR
    Joined: Nov 2003
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    PAR Yacht Designer/Builder

    A strong christian upbringing . . .
  13. wardd
    Joined: Apr 2009
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    wardd Senior Member

    i had one of them but I'm feeling much better now
  14. MikeJohns
    Joined: Aug 2004
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    Location: Australia

    MikeJohns Senior Member

    What about the boats with the powdered copper or copper nickle and epoxy? I have heard of boats that have had the system for 10 years and just need to scrub it occasionally. It's similar in effect to sheathing.

    Another low fouling bottom that seems to work in vessels that go fast enough to self clean is a low energy surface. Teflon and high density polythene. The problem is getting it to stick reliably. If you could adhere thin sheets to an epoxy coated surface with a molecular bond it's suggested that many vessels could use it instead of chemicals .

  15. mydauphin
    Joined: Apr 2007
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    Location: Florida

    mydauphin Senior Member

    Had a 70 mph speed boat with some slick stuff added to bottom. Worked great until I left boat sitting around for 3 days - the stuff would grow on hull and not let it plane... So much for speed. Those buggers are hard to get around.
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