Gelcoat or clear coat?

craigman

Petty Officer 2nd Class
Joined
Jun 14, 2009
Messages
141
Fellas,
just aquired a Glastron/Carlson 23' day cruiser. On the top surfaces, the "clear" is peeling. I'm not sure if it's gelcoat or a automotive clear?
I was just reading were someone said that gelcoat does not peel. It may crack and flake, but not "peel" like automotive paint.
Is this true?
And does look like "peeling" to you?
Thanks for your input!
Craig
 

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ezmobee

Supreme Mariner
Joined
Mar 26, 2007
Messages
23,767
Re: Gelcoat or clear coat?

Metal flake gel coat is a whole other animal. And when it goes bad it GOES BAD. Pretty much going to have to sand that down and repaint it. The problem is that the flake makes it so the gel got baked from both sides.
 

bcbit01

Seaman Apprentice
Joined
May 29, 2012
Messages
37
Re: Gelcoat or clear coat?

Gel coat is a 20 mil (or so) tinted fiberglass resin. If you have peeling, it is either a poorly applied acrylic "restoration product" or some moron sprayed it with clear coat (3-5 mil). You should be able to chemically strip the clear. I wouldn't worry too much about what it might do to the gel coat because the fact someone cleared it is probably an indication it was thrashed to begin with. At that point, either the gel coat is restorable or not. If so, wet sand it down to 1000 grit (gets rid of microscopic pores that attract accelerated oxidation when oxygen is trapped under coatings and then exposed to UV), and then work your way up with a rotary wheel using liquid compounds/cleaners until you get a shine. Then wax it. If you think the gel coat is junk, you have two choices. 1. new gelcoat and then sand sand sand sand fair then buff buff buff shiny...then maintain forever. Not a good way to go. 2. two part linear polyurethane paint THIS is the way to go. Several companies make suitable products. My favorite is "Perfection" by Yachtpaint (new owner of Interlux). It is a bit picky about ambient conditions but you can roll it on then tip the bubbles with a brush and still do a very good job. It won't look like a car or a new boat...but dang close if you do good prep work and it is VERY low maintenance after that. Note to those that think they'll get a perfect show car fair glossy job: It CAN be sprayed but the results are not THAT much better than roll and tip and you better have the right protective equipment and dust/draft free environment. This product contains isocyanurates and, if inhaled in aerosol form, can kill you by day's end. I've sprayed PPG Deltron LP with a good mask with no problem. This is a similar product with the same dangerous chemical. I don't think a positive pressure respirator (which is recommended by some) is necessary but a GOOD mask with the RIGHT cartridges is an absolute requirement. Have fun. The results are worth the time.
 

Georgesalmon

Lieutenant Commander
Joined
Apr 14, 2012
Messages
1,793
Re: Gelcoat or clear coat?

Its not gelcoat that peeling. Probably a clear coat and the surface was not prepped properly or cleaned before putting it on. You could sand it all off prep it with 320-400 grit wet and re-clear coat it. Any good polyurethane auto clear coat will work. You do need a mask with organic cartridges not just a dust mask. You won't die by days end and as with any haz chemical you need to be safe but the ppm allowed for these paints in not 0.
 

Yacht Dr.

Vice Admiral
Joined
Feb 26, 2005
Messages
5,581
Re: Gelcoat or clear coat?

10:1 its rattle can clear.

That coat has to come off one way or an other. Whether it can be sanded and buffed out is hard to tell.

You might have to re-clear it.

Gel or 2 part clear is kinda the only thing you can do. I would gel Clear it myself. And then keep it covered and clean.

YD.
 
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