Remove marine growth from fiberglass??

Discussion in 'All Things Boats & Boating' started by CheoyLee39, May 12, 2014.

  1. CheoyLee39
    Joined: May 2014
    Posts: 21
    Likes: 1, Points: 0, Legacy Rep: 11
    Location: Cairns

    CheoyLee39 Junior Member

    Good Morning

    I have recently purchased a fiberglass yacht, having previously owned timber, I am aware of how to clean and remove barnacles etc from this type of hull.
    However fiberglass seems to be a different proposition.
    I have read several articles etc stating that chemicals/acids are used to remove the stubborn barnacle rings etc:???

    I am actually hoping to completely clean the hull, removing all paints, growth, stains and anti-foul, in order to ascertain the condition of the hull/gel-coat, and then re-anti foul. I do not know the current condition of the hull, as I have not seen it, so I am keeping an open mind, and expecting a fairly big job.

    Any advice and ides on how best to tackle this would be appreciated. And chemicals, solvents that will best remove the present build up of grime, barnacles and paint, and also restore the gel-coat if required.

    Cheers :)
     
  2. rasorinc
    Joined: Nov 2007
    Posts: 1,854
    Likes: 70, Points: 48, Legacy Rep: 896
    Location: OREGON

    rasorinc Senior Member

  3. sdowney717
    Joined: Nov 2010
    Posts: 852
    Likes: 32, Points: 28, Legacy Rep: 274
    Location: Newport News VA

    sdowney717 Senior Member

    Get some pool acid, hydrochloric, put in a spray bottle.
    spray it on the bases, they dissolve.
    I can get 30%, which is a strong muriatic acid.
    Likely you can dilute to 20%.

    I also think a vinegar paste made with flour and white vinegar and smear it on let sit will work, just not as easy or fast.
     
  4. sdowney717
    Joined: Nov 2010
    Posts: 852
    Likes: 32, Points: 28, Legacy Rep: 274
    Location: Newport News VA

    sdowney717 Senior Member

    Looking at the wave blade. You can make a tool using a sawzall and braze on a putty knife. I think I might just make that tool.
    I will be pulling out my boat, they have scrapers with long handles and a power washer.
     

  5. whitepointer23

    whitepointer23 Previous Member

    soda blast is a good option if there is an agent in cairns.
     
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