Removing old deck gel coat-what to put back

Discussion in 'Fiberglass and Composite Boat Building' started by Old SaltMV, May 27, 2010.

  1. Old SaltMV
    Joined: May 2010
    Posts: 1
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Massachusets

    Old SaltMV New Member

    What kind of Resin to use? I have an old Sea OX 23, the gel coat on the deck is chipping loose and I have ground it all off down to the base coat with the glass cloth in it.
    The deck gets some flex when at sea. I plan to wash it down with acetone after getting all the loose old gel coat off.
    What should I use to replace the old gel coat.
    A manufactured gel coat or a resin with white color added.
    What kind of Resin poly? I plan to put it on with a paint brush.

    Thanks for any tips oldsaltmv
     
  2. Herman
    Joined: Oct 2004
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    Location: The Netherlands

    Herman Senior Member

    I would paint the deck with polyurethane paint. No gelcoat at all.
     
  3. mark775

    mark775 Guest

    Take care of the flex if it was enuf to cause cracked gelcoat. Gelcoat is my preference to put back on there. Clean it very well, mask very well, If you want a little nonskid, mask neatly where you WILL walk and apply gelcoat with surface agent by brush and roller, remove tape, retape a neat perimeter and wipe where the gelcoat will go with acetone rag turned often, apply gelcoat with surface agent and nonskid additive from your chandlery, remove tape while still wet. If you want a lot of nonskid, tape where you WON'T walk very neatly around the perimeter, apply gelcoat with no surface agent by roller, remove tape, "feed the chickens" with silica sand (medium sandblasing media) as evenly as possible ( I get up on a gunnel and sprinkle sand like I am rolling dice - just shake it out evenly), come back the next day and blow off or gently sweep, gelcoat with surface agent everything.
    You can match the color pretty close by experiment (a little gelcoat dye goes a long way) or a color match fro the gelcoat manufacturer.
    Rustolem 9000 epoxy (warehouse floor paint) is another option.
     
  4. troy2000
    Joined: Nov 2009
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    Location: California

    troy2000 Senior Member

    Mark, would that Rustoleum 9000 work for painting down canvas (or lightweight fiberglass cloth) on plywood decks?
     
  5. mark775

    mark775 Guest

    I don't know Troy, but it is the toughest, most chemical resistant stuff I have seen for engine rooms. I hate to lead you astray about your application.
     

  6. Landlubber
    Joined: Jun 2007
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    Location: Brisbane

    Landlubber Senior Member

    ..using epoxy resin, apply a layer of cloth, fill in later with epoxy and glass baloons, sand smooth, then mask up and non skid the areas as required.
    Use two pack polyurethane (linear) for the paint and the non skid.
     
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