glassfiber over concrete

Discussion in 'Fiberglass and Composite Boat Building' started by tropicalbuilder, Jun 14, 2010.

  1. tropicalbuilder
    Joined: Jun 2010
    Posts: 49
    Likes: 3, Points: 0, Legacy Rep: 38
    Location: costa rica

    tropicalbuilder Junior Member

    Hi,
    rebuilding a fiberglass boat with an internal keel of concrete glassed over..
    I have to replace part of the glass over the concrete, but before I have to fill some imperfections and fair the keel top with new concrete... what kind of concrete is best?
    how long before i can glass on top of it?
     
  2. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    Fair it with polyester putty. The humidity in cement will create a lot of problems with the fiberglass otherwise.
     
  3. tropicalbuilder
    Joined: Jun 2010
    Posts: 49
    Likes: 3, Points: 0, Legacy Rep: 38
    Location: costa rica

    tropicalbuilder Junior Member

    ok .. sounds good
     
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