How to take an aluminum boat back to bare aluminum and keep it that way.

Discussion in 'Metal Boat Building' started by ryanpratt, Apr 2, 2010.

  1. ryanpratt
    Joined: Jan 2010
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    Location: South Carolina

    ryanpratt Ryan

    Hello,

    Question for the board. We are thinking about taking a zodiac Rib that is made of aluminum then painted back down to the bare aluminum and not repainting it.

    1. Is this a wise thing to do?
    2. How should we do it? We are assuming sand blast then clean. Any special coatings we need to put on it after sand blasting or any special cleaners to use?

    Thanks to all who offer their advice.
     
  2. marshmat
    Joined: Apr 2005
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    Location: Ontario

    marshmat Senior Member

    If it's already painted, I'm not sure why you'd want to take it back to bare metal. The big advantage of leaving aluminum bare is that you don't have to pay for the paint job in the first place.

    Left to its own devices, aluminum quickly forms its own protective oxide coating; no special coatings are needed. Although it won't corrode away on its own once the oxide layer has formed, it will still be vulnerable to the mixed-metals problem and to stray currents.
     
  3. ryanpratt
    Joined: Jan 2010
    Posts: 20
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    Location: South Carolina

    ryanpratt Ryan

    So we should just leave it?

    Only concern is the boat is not the color we would like for the boat. Could we paint over existing paint or would that cause issues?
     

  4. alidesigner
    Joined: Nov 2006
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    Location: Australia

    alidesigner Senior Member

    Once the paint is off you can orbital sand it and then coat with nyalic (www.nyalic.com)
     
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