gelcoat alternative

Discussion in 'Fiberglass and Composite Boat Building' started by dinoa, Jan 22, 2010.

  1. dinoa
    Joined: Oct 2007
    Posts: 240
    Likes: 26, Points: 28, Legacy Rep: 97
    Location: florida

    dinoa Senior Member

    I read in the Sailing Anarchy Forum that some builders were applying paints as a first coat in the laminating process instead of gel coat. PPG 700 and 1000 were mentioned which are industrial epoxy/siloxane hybrid paints and applied directly on the mold release surface in 4 coats before laminating.

    Has anyone had experience using anything but gelcoat or the laminating resin itself as an initial coat that will provide a durable, attractive outside layer after demolding?


    Dinoa
     
  2. Herman
    Joined: Oct 2004
    Posts: 1,618
    Likes: 94, Points: 48, Legacy Rep: 1240
    Location: The Netherlands

    Herman Senior Member

    I have seen it used as well, but with PU paint. Also I have some PU gelcoats for epoxy in my program, so I guess it can work.

    You do need a 100% perfect mold, however.
     
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