Acrylic paint over epoxy

Discussion in 'Materials' started by urisvan, May 29, 2020.

  1. urisvan
    Joined: Nov 2005
    Posts: 225
    Likes: 5, Points: 18, Legacy Rep: 53
    Location: istanbul

    urisvan Senior Member

    Hi,
    I dont have two parts polyurethane paint. Will it be a problem if i use solvent based(naptha) acylic paint over epoxy resin?
    Regards
    Ulas
     
  2. Blueknarr
    Joined: Aug 2017
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    Location: Colorado

    Blueknarr Senior Member

    There shouldn't be any adhesion issues.
    The acrilic is somewhat less durable than a two-part urathane.
    Then the usual concerns of use below the waterline and UV. Some single part acrilics UV stable enough to be exterior rated and sufficiently water resistant for submersion ... Others are not.
     
  3. urisvan
    Joined: Nov 2005
    Posts: 225
    Likes: 5, Points: 18, Legacy Rep: 53
    Location: istanbul

    urisvan Senior Member

    I worried about if it effects epoxy underneath, maybe soften it. If it doesnt no big concern.
    it is a two component acrylic paint and the hardener is a very low vicosity, liquidish material.

    And alsi one more question is, can i apply to epoxy putty or should i use primer over the putty?

    Regards
    Ulas
     
  4. ondarvr
    Joined: Dec 2005
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    Location: Monroe WA

    ondarvr Senior Member

    Epoxy is a good substrate for most normal paints, you aren't going to harm the epoxy.

    As for using it over putty.
    Painting over putty without using a primer can cause the puttied area to be visible on the surface.

    If this makes no difference, then its fine.
     

  5. urisvan
    Joined: Nov 2005
    Posts: 225
    Likes: 5, Points: 18, Legacy Rep: 53
    Location: istanbul

    urisvan Senior Member

    Thanks guys. It helps.

    Regards
    Ulas
     
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