Epoxy bond to Polyester

Discussion in 'Fiberglass and Composite Boat Building' started by Ok J, Apr 24, 2005.

  1. Ok J
    Joined: Apr 2005
    Posts: 25
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Kelowna BC Canada

    Ok J Ok J

    If I choose to use epoxy for my stringer and transom installation, are there any known issues with bonding to the exsisting Fibreglass on the hull? Does epoxy bond better to wood?
    Thanks in advance,
    -J
     
    Ok J, Apr 24, 2005
    #1
  2. Doug Lord

    Doug Lord Guest

    bonding stringers

    If you make your stringers out of glass + poly ester separately from the boat or in the boat so that they can be removed it MIGHT be a better bond using Plexus to bond the finished and ground stringer back into the ground hull. I haven't worked with the stuff but I have been told that this produces a better bond than either epoxy to polyester or polyester to polyester. DEFINITELY check with a Plexus expert first!
     
    Doug Lord, Apr 24, 2005
    #2
  3. Raggi_Thor
    Joined: Jan 2004
    Posts: 2,457
    Likes: 64, Points: 0, Legacy Rep: 711
    Location: Trondheim, NORWAY

    Raggi_Thor Nav.arch/Designer/Builder

    Epoxy definetly bond sbetter to wood (than polyester or vinylester does). Epoxy will also prevent water absorption, while polyester is not a good water barrier.
    It seems like epoxy bonds well to old polyester, when all the styrene is evaporated, taht is after several years.
     
    Raggi_Thor, Apr 25, 2005
    #3
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