thicken up gel coat

Discussion in 'Fiberglass and Composite Boat Building' started by brokensheer, Sep 27, 2012.

  1. brokensheer
    Joined: Jun 2009
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    Location: So. Md

    brokensheer Senior Member

    how would you do this to spray a random nonskid deck finish
     
  2. tunnels

    tunnels Previous Member

    i have never seen a non slip pattern done with sprayed gelcoat BUT i have seen it done using a short haired roller !
    if you spray and wait for just the right moment as it thickens and begins to gel and very lightly run the roller over the top it will stick to and pick up the gel and make a non slip type patern . its hit and miss and ok for a small area !!,if the pick up is a little harsh then lightly sand it back a little .

    On a transom exstension i did a while back i used a polyproperlyne boat carpet cut to shape and stuck it down with clear bathroom grade silicone . It looks good ,easy to clean ,soft under foot and if gets damaged simply use a shape knife cut the silicone and replace it !
    Its been in use for over 5 years and still as good as the day it was done ! :D
     
  3. jorgepease
    Joined: Feb 2012
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    Location: Florida

    jorgepease Senior Member

    What about Kiwigrip?
     
  4. Herman
    Joined: Oct 2004
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    Location: The Netherlands

    Herman Senior Member

    Or Gibco Flexmold: www.gibcoflexmold.com. With some thinned down gelcoat you can make nice patterns. If you are near Kentucky, visit them on the IBEX
     
  5. midnitmike
    Joined: Apr 2012
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    Location: Haines and Juneau

    midnitmike Senior Member

    I've often thought that if I needed to spray a non-skid I'd use one of my texture guns to give it a try. These are inexpensive ceiling texture spray guns designed to handle this sort of material. For the most part I use mine to spray straight (unthinned) gelcoat, and I see no reason why they wouldn't work just as well if I added a little non-skid to the mix.

    A suitable non-skid surface can be achieved in a simplier fashion.

    Tape off the area, apply a thin even layer of gelcoat, lightly sprinkle your non-skid over the area, and hit it with your roller to even out the texture.

    You can alter the surface texture by working the gelcoat with the roller as it begins to thicken creating small peaks, or conversely soften the non-skid by adding a bit more gelcoat during the initial rollout and then leaving it alone to flow out somewhat before it cures.

    Another method is to tape off the area, apply a layer of gelcoat, cover the area with non-skid, and let cure. After the gelcoat has cured, brush or vacumn the excess non-skid off leaving behind only those particles that are embedded in the gelcoat, then apply a second coat (with wax) over the top to seal in the non-skid. This takes a lot more non-skid initially, but you recover most of the excess material before you apply your second coat.

    MM
     
  6. latman
    Joined: Mar 2010
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    Location: Australia

    latman Junior Member

    I made non slip a few times by mixing flowcoat and cabosil (aerosil, fumed silica) to peanut butter consistency and applying it with a roller
     
  7. keith66
    Joined: Sep 2007
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    Location: Essex UK

    keith66 Senior Member

    One way i have used, Vinyl wallpaper stuck onto the plug with contact adhesive, i have also used vinyl floor covering with non skid pattern, When waxed & pva'd both worked as good as expensive systems.
    Another way i have heard of but not have not used!
    Paint or spray the gelcoat on and as soon as possible scatter epsom salts onto the wet surface. Once its cured wash the epsom salts away leaving a random non skid. Could be worth an experiment?
     
  8. kjones
    Joined: Oct 2012
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    Location: florida

    kjones New Member

    Non Skid

    Instead of the salt just use the gelcoat non skid additives on the market. Many people either add it to the last coat or use the scatter technique. A plus is you can choose fine, medium, or course depending on how that section of the boat is used. Not too expensive from what I found.
     
  9. brokensheer
    Joined: Jun 2009
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    brokensheer Senior Member

    this is what I was planning but I thought I had added gycerin?? spelling in your top paragraph
     
    Last edited: Oct 4, 2012
  10. harrygee
    Joined: Feb 2010
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    Location: Tasmania Australia

    harrygee Junior Member

    Sprinkle sugar from a suitable container with perforations as a "salt-shaker".

    You can sprinkle it on pretty thick. The resin / gelcoat will dissolve the sugar and you can hose it off when cured.

    Don't do this in your lounge - the resulting syrup is gooey.

    The resulting finish has a more interesting texture than sand etc and makes a good long-lasting non-skid.

    Harry
     
  11. tunnels

    tunnels Previous Member

    one non slip we used to do was two pot paint and sprinkled silica sand completely over the surface till it was completely covered with a tin layer of drysand then let it harden and lightly vac clean off then spray more two pot till it was to the texture you wanted and then let harden . has the best non slip surface ever !! could kneel on it!! stand on it all with bare skin and would never slip its what we used in surfboats as everyone had bare skin no shoes or what ever . I never saw one graze! never saw anyone ever get hurt in any way!! , i did this job for 4 years without one single misshape ever !!,Then we found a new material 6mm thick closed cell foam called gorilla grip with a peel off backing and we stick that down because it was the closes stuff we could find that did what we were using . :!:
     

  12. midnitmike
    Joined: Apr 2012
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    Location: Haines and Juneau

    midnitmike Senior Member

    I'm just curious...what method did you choose for your job?

    MM
     
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