Clear Coat Application/Spider Crack Questions

GoFastr

Seaman
Joined
Aug 26, 2012
Messages
73
First question:
I discovered I had a few "gouges" on my bottom most likely from dropping the hook at the ole local sandbar gathering spot and had the misfortune to find the only rock or lost anchor or coral etc. there. Whatever it was (untelling which trip did it) it took out small quarter sized chunks of the gelcoat from bouncing on it briefly (shallow sandbar area).

Long story short, I sanded, prepped and completed my very first gelcoat gig using off the shelf White Gelcoat from WM. I'm amazed at how hard and solid this stuff is and how difficult to sand down. Also couldn't have picked a better location to attempt my first cosmetic effort where no one can see anyt imperfections from the novice.

Any-hoo, I've got it wet-sanded to a very nice smooth surface and want to shoot some "Clear Coating" over it for added protection and of course the shine to match the rest and protect somewhat from normal yellowing when in the water. Here's what my intentions are...I bought a spray can of DupliColor Perfect Match Acrylic Laquer Clear Coat Finish for top coating and am intending to use it in multi layers for good thickness.

Are my intentions okay in using this product as a clear finish on gel coat? If not, then why and what instead without going complicated?.....If I'm okay, would it be cool to use it on a more exposed or obvious area like the gunnels or other areas visible to the casual observer should I require any future touchup efforts?

Second question:
I've got a couple of spots of spider cracks from normal hull stresses. One in particular bugs me and has become more prominent not in size, but as in wax or whatever has worked into it darkening the lines making it look worse than what it is.:facepalm:

What's the best way to clean these out and make less noticeable short of etching out and filling....which risks potential larger probelem areas? I'm thinking an old stiff tooth brush with some soft scrub or something, then a shot of clear coating?

Thoughts/suggestions?...:suspicious:
 

Woodonglass

Supreme Mariner
Joined
Dec 29, 2009
Messages
25,927
Re: Clear Coat Application/Spider Crack Questions

You don't Clear Coat Gel coat. You Sand, Buff, and Polish. Spider Cracks require exactly what you surmised. Open em up and fill em.
 

pauloman

Petty Officer 3rd Class
Joined
Sep 8, 2005
Messages
89
Re: Clear Coat Application/Spider Crack Questions

don't see why you couldn't clear coat gel coat - many fiberglass hulls get coated with two part lpu coatings. but primer issues might be a problem (use and epoxy primer which will yellow under most lpu coatings). Rich folks buy new boats and remove the gel coat then paint with an LPU coating.

still the clear coat you describe sounds like a low end clear coat.
 

Woodonglass

Supreme Mariner
Joined
Dec 29, 2009
Messages
25,927
Re: Clear Coat Application/Spider Crack Questions

Well, This^^^ is somewhat correct. Some Gelcoat does get Coated with Clear Gelcoat. We would need to see pics of your hull to determine if Yours is of that type. Based on your description I was assuming not, But...I could be wrong.
 

ondarvr

Supreme Mariner
Joined
Apr 6, 2005
Messages
11,527
Re: Clear Coat Application/Spider Crack Questions

Like WOG said, the clear coat is of no value. Not much you can do with cracks unless want to go through the entire repair process.
 

ondarvr

Supreme Mariner
Joined
Apr 6, 2005
Messages
11,527
Re: Clear Coat Application/Spider Crack Questions

don't see why you couldn't clear coat gel coat - many fiberglass hulls get coated with two part lpu coatings. but primer issues might be a problem (use and epoxy primer which will yellow under most lpu coatings). Rich folks buy new boats and remove the gel coat then paint with an LPU coating.

still the clear coat you describe sounds like a low end clear coat.

There are clear gel coats, but they are noramlly only applied over metal flake finishes.

Both clear gel coats and clear paints yellow over time, typically more than whatever light color, in this case white, they are used over, so they tend to make the surface degrade sooner.

I have never seen a person want the gel coat removed from a new boat and have some other coating applied (I'm sure it has happened though), there would be no advantage in removing the gel coat, in fact there would be several negatives come into play.

I do have customers that use specific gel coats for custom yachts that are going to be painted, none remove the gel coat before painting though.

I don't see any advantage or benefit from removing the gel coat before painting.
 

GoFastr

Seaman
Joined
Aug 26, 2012
Messages
73
Re: Clear Coat Application/Spider Crack Questions

The whole boat is clear coated. 2005 32' foot twin engined offshore "go fast" boat. All white with custom "painted" graphics from the factory. Pretty much like automobiles are clear coated.

They pop the hull out of the mold with gelcoat sprayed on prior to the glass, buff out/prep the gelcoat, slap the upper/lower halfs together, send it up the road to a custom painter who lays on the graphics and finishes it off with clear coat.
 

GoFastr

Seaman
Joined
Aug 26, 2012
Messages
73
Re: Clear Coat Application/Spider Crack Questions

This sounds pretty straight forward. It's addressing painted fiberglass auto repairs, but one would AZZ-sume it's the same for painted fiberglass boats. Otherwise any painted vice colored gel has no protection from scuffing or the elements.

How to Clear Coat Fiberglass | eHow.com
 

Woodonglass

Supreme Mariner
Joined
Dec 29, 2009
Messages
25,927
Re: Clear Coat Application/Spider Crack Questions

Post up some pics of your boat so we can see what you're dealing with. The Article you posted was for PAINTED Fiberglass NOT Gelcoat!!!
 
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