Need Advice about Epoxy and cloth -mistake

Discussion in 'Materials' started by Capt Ram, Feb 9, 2011.

  1. Capt Ram
    Joined: Jan 2011
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    Location: lake worth

    Capt Ram Junior Member

    Need Advice about Epoxy and cloth
    I m putting a new deck in my commercial dive boat, it’s taken a lot of abuse and I expect this to continue- so I used ¾ marine ply and 2 layers of 24 oz biaxial with epoxy resin- the first layer of cloth was well wetted and as that became tacky I rewetted it down and laid the second layer of cloth on top of the first layer , it stuck well and I then brushed down the top layer with more epoxy while it was still wet- but I think it needed more volume, and I ran out of the resin-The question is on the second layer of biax I think I did not put enough epoxy on and its now hardened, what to do now to add more epoxy? The cloth is sticking well to the first layer and there are no air bubbles, but the surface seems a bit rough- ------ do I sand it then clean with acetone before more resin? Is 2 layers of 24 oz biaxial enough for heavy duty use/abuse—I plan on gel coating the deck , or painting it-and the roughness is not a problem it will act as non skid- or do I have to recoat it first?
     
  2. TeddyDiver
    Joined: Dec 2007
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    Location: Finland/Norway

    TeddyDiver Gollywobbler

    For the intended use I'd just add more resin on top. That is if the surface it's still clean and blush free. If it delaminates later grind it down before next season and set a new layer of biax..
    BR Teddy
     
  3. tunnels

    tunnels Previous Member

    Paint it as you might find you gel coat may not go hard over the top of he epoxy !!:?:
    The two dont like each other that way .:eek:
    Epoxy over poly gel coat is ok but not Polyester gelcoat over epoxy !! :confused:
    Try a small area and see what happens !!
    :D
     
  4. mark775

    mark775 Guest

    Paint it as you might find you gel coat may not go hard over the top of he epoxy !!
    The two dont like each other that way .
    Epoxy over poly gel coat is ok but not Polyester gelcoat over epoxy !!
    Try a small area and see what happens !!

    __________________
    We :confused: shant :eek: say :mad: things :rolleyes: unless :cool: we :p know ;) them :D to :?: be :eek: true :!:

    Listen to Teddy.
     
  5. tunnels

    tunnels Previous Member

    We shant say things unless we know them to be true !!!!
    What is the truth ?
    Is it black and white OR just shades of gray ???


    Tis better to be sure than sorry! Try a small patch !!. :p
    Not all products world wide are the same !:confused:
    Whats good one place is completely differant acoss the border or across the ocean in another country . If you think they are the same everywhere in every place you go you a lot to learn !!:mad: dont take things for granted cause your in for a shock my friend !:( . And just when you think you know it all someone will rip the rug from under !! :eek:
    :D:p:p
     
  6. Capt Ram
    Joined: Jan 2011
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    Capt Ram Junior Member

    Im fine not using gel coat, paint will work fine- should I sand it down at all its pretty rough as it is before I add resin? What is Blush ?? thanks guys!
     
  7. Carteret
    Joined: Jan 2004
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    Location: Eastern NC

    Carteret Senior Member

    Just add more epoxy. If there are slick areas, light sand with 80 grit to tooth in the new epoxy then paint.
     
  8. Steve W
    Joined: Jul 2004
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    Location: Duluth, Minnesota

    Steve W Senior Member

    If the surface is rough you could give it a light sand just to knock down any fibers that are sticking up,then go over it with something like a norton rapid strip brush to rough up down in the low spots,then,either more resin and paint or just paint depending on if you actually have dry glass or not. I would normally suggest washing off any blush with water and a scotchbrite as the first step but not if you may have fibers that are not wet out properly as you have suggested. You could use a nonskid paint such as Kiwigrip to mask any roughness since it is a deck.
    Steve.
     
  9. lewisboats
    Joined: Oct 2002
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    Location: Iowa

    lewisboats Obsessed Member

    Blush is a waxy film that occurs with some hardeners (Usually with ratios of greater than 2:1) as the epoxy hardens. The best way to clean it off is with a coarse green scrubby pad and some ammonia and water. A second layer of epoxy won't adhere properly...or most other things for that matter...with this coat on. If your epoxy says "No Blush" then you probably don't have it. If it doesn't I would go on the assumption that it is there and clean
     
  10. girvin
    Joined: Dec 2009
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    Location: Vancouver Island

    girvin Junior Member

    Scrub with sctoch pad then do a fill coast with epoxy. This is how i make surfboards. Don't sand the cloth. It will weaken it. The roughness is probly the weave that hasn't been filled with epoxy. So after fill coat you can sand and paint. If you have any q pm me. I have made thousands of boards and this method is good for mistakes if you don't need gell coat.
     

  11. PAR
    Joined: Nov 2003
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    Location: Eustis, FL

    PAR Yacht Designer/Builder

    Always assume you have a blush, particularly when working "in the field". The rough texture will help subsequent coatings to "tooth" in. Knock it down if it's too high to be covered with 4 or five coats of paint.
     
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