Paint below the waterline of a houseboat

Discussion in 'Boatbuilding' started by mariobrothers88, Aug 28, 2021.

  1. mariobrothers88
    Joined: Sep 2020
    Posts: 215
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    Location: San Diego, CA

    mariobrothers88 Senior Member

    Hi guys, what would you guys use for paint below the waterline of a houseboat made out of Marine plywood, fiberglass and epoxy? The houseboat won't ever move, it would be permanently anchored to one spot and it would be salt water environment. Would an antifouling paint be necessary given that it won't need to move? If not, what would you paint it with below the waterline?

    Thanks for any advice or input!!!
     
  2. BlueBell
    Joined: May 2017
    Posts: 2,120
    Likes: 654, Points: 113
    Location: Victoria BC Canada

    BlueBell . . . . .

    Which part of the world is the houseboat in?
    Perhaps San Diego.

    Is it a new houseboat, new construction?

    Any epoxy based bottom paint.
    International makes a good one.
     
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  3. fallguy
    Joined: Dec 2016
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    Location: usa

    fallguy Senior Member

    Ron-bottom paints are regionally formulated. So ask where you plan to moor what works there.

    post draft-I worded this poorly...I meant to say certain regions use certain formulas....a paint used in the gulf may be different than Tijuana than Seattle than Lake Superior
     
    Last edited: Aug 29, 2021
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  4. Blueknarr
    Joined: Aug 2017
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    Location: Colorado

    Blueknarr Senior Member

    Absolutely use anti-fouling.

    And have it cleaned regularly.

    Calcified marine growth is heavy and will increase the boats weight. Thus reducing its buoyancy. Sufficient growth will sink!
     
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  5. fallguy
    Joined: Dec 2016
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    Location: usa

    fallguy Senior Member

    I should get arrested by the grammar police. Bottom paints are not regionally formulated. Certain regions prefer certain paints for various conditions.
     
  6. kapnD
    Joined: Jan 2003
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    Location: hawaii, usa

    kapnD Senior Member

    I’d use a generous layer of barrier coat for starters, followed by non ablative bottom paint, applied extra thick, maybe twice the recommended thickness.
    I see some permanent in-water structures with just coal tar epoxy applied, no anti fouling, they grow long beards.
     

  7. BlueBell
    Joined: May 2017
    Posts: 2,120
    Likes: 654, Points: 113
    Location: Victoria BC Canada

    BlueBell . . . . .

    ???????
     
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