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  GEL COAT vs. AIRPLANE PAINT

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Author Topic:   GEL COAT vs. AIRPLANE PAINT
BEACHPANDA posted 01-17-2004 08:19 PM ET (US)   Profile for BEACHPANDA   Send Email to BEACHPANDA  
I've got a 1980 v-20 BW Outrage w/ a lot of stress cracks, and a few minor patches. A new Gel Coat (interior and exterior) can cost over $5k. However, for the $500 + the cost of Airplane Paint I can have the whole vessel redone - even add a couple of layers of clear coat if I want. How..? I live in Miami where there are A LOT of body shops for cars. The folks I spoke to are willing to remove everything fill in the major stress cracks, and for $500 + cost of the paint, repaint the entire hull.

Some storage details: My boat is either stored on a 3000 lb Lift or is trailered. Bottom Paint isn't necessary.

What's the deal here? Is there a real difference between Gel Coat and Airplaine Paint? I have personally (and recently) witnessed a freind take down a '67 Corvette to the Fiberglass, and repaint with Airplane Paint. After a full restoration, new leather, new engine, trnasmission, etc.. he was able to re-insure his Vette for $65,000. He even took a hammer to his car to show everyone how strong the paint is, and there wasn't even a scratch.

I'd appreciate your help here.

Thanks,

Beach

WSTEFFENS posted 01-17-2004 11:04 PM ET (US)     Profile for WSTEFFENS  Send Email to WSTEFFENS     
Beach:

What is "airplane paint"? Is is some sort of catilaized paint?

To my limited knowledge, gell coat is usually only applied in the lay up phase of FRP lay-up. It is the first layer in the mold after the release agent. You usually build in the order of release agent (PVA), gell coat (final finish outside), then layers of glass cloth, mat, and resin.

Most refinish jobs I know are some sort of catilized paint such as "Immron" (Dupont TM), very tough & used on truck bodies. Nasty stuff to spray & breath. Some have Cyanide deritives in them in the uncured state.

Best

WLS

billh1963 posted 01-18-2004 08:06 PM ET (US)     Profile for billh1963  Send Email to billh1963     
I, too, would be interested in knowing more about "airplan paint"!
billh1963 posted 01-18-2004 08:09 PM ET (US)     Profile for billh1963  Send Email to billh1963     
Meant "airplane" of course!
tomroe posted 01-18-2004 09:27 PM ET (US)     Profile for tomroe  Send Email to tomroe     
Beach,

I don't know a lot about paint, but I have owned three airplanes and had one repainted. Although durable, "airplane paint" will chip and scratch like any other paint.

From reading this forum, It seems like Awlgrip would be a good choice.

Tom

John W posted 01-18-2004 10:02 PM ET (US)     Profile for John W  Send Email to John W     
Beachpanda can speak for himself, but I'm sure that what he means by "airplane paint" is two part polyurethane paint such as Imron, Awlgrip, Streling, Interthane, etc. This is what they use to repaint airplanes as well as boats.

Beachpanda, the reason having a boat re-gelcoated is so expensive is the tremeondous amount of labor involved in making it shine. As I'm sure you know, the gelcoat finish of a new boat is sprayed in the mold when the boat is produced. When pulled from the mold, the resulting finish is the shiny apprearance seen on a new boat. But to apply gelcoat to an existing boat, a tremendous amount of sanding, buffing & polishing is required to make the boat look new again. Hence, the big bill.

To each his own, but I think it's crazy to spend massive amounts of money re-gelcoating an old boat. Spot fixing is one thing, but if the whole boat needs refinishing, repaint it with 2 part polyurethane such as Awlgrip. Some people seem to feel that you've somehow ruined an old Whaler by painting it, but the finish that can be achieved with modern 2 part paints is at least as pretty, almost as durable, and lower maintenance, than new gelcoat.

If you own an older fiberglass yacht like a Bertram, Viking, etc., chances are it will be re-finished using a two part polyurethane paint. And no one would consider refinishing an older yacht with new gelcoat, the cost would be astronomical. Yet a high quality polyurethane paint job will increase the value of a classic Bertram significantly, and will certainly not hurt the price.

Hatteras Yachts pulls each yacht from the mold with a shiny gelcoat finish, and immediately paints it with 2 part polyurethane paint before it leaves the factory. This is done because the paint finish is shinier, prettier, and much easier to keep clean than gelcoat. Hatteras has painted all of their boats since they started in te 1960's, and they still do today. Every custom yacht builder (Rybovich, Merrit, Jarrett Bay, Huckins, etc) finishes their new yachts in 2 part polyurethane paint. The idea that a well applied 2 part polyurethane paint job is not worthy of a 20+ year old trailer boat such as a Boston Whaler doesn't make sense to me.

John

BEACHPANDA posted 01-21-2004 11:10 PM ET (US)     Profile for BEACHPANDA  Send Email to BEACHPANDA     
Sorry I've absent in any comments... not that they're worth much - but I was attending to my wife's recent Pseudo Heart-Attack. We were vacationing in Busch Gardens w/ the kids and needless to say, our crisis changed our immediate priorities. We're back now, and the bottom line, she was suffering from severe Potassium deficiency. It's going to take time to restore her system back to normal, but at least it's nothing surgical!

tomroe, unlike you, I've never owned an airplane... though as a passenger I've crash landed twice. I can't comment on your experience with Airplane Paint scratching, but my friends paint did NOT scratch. Also, neither the Paint or the Fiberglass had stretch marks after he jumped on it w/ me... and I weigh 290 lbs (our combined weight was nearly 600 lbs). He was also using a 12 lb plumbers hammer when he hit the car and no chips either. Maybe he had many coats of paint applied... I'll ask him, but I think the forum has a concensus that it's a moot point anyhow.

Based upon the comments, and advice of the forum's community, it looks like I'll go with AwlGrip. It just makes more economical sense (or cents).

Thanks,

Allen (aka the Beach Panda)


whalersman posted 01-21-2004 11:37 PM ET (US)     Profile for whalersman  Send Email to whalersman     
John W is correct...

Bottom line... Paint is paint (Sort of)... Some way more expensive then others because of the type of use and labor involved in preparing the surface..

Imron has been a preferred paint for Airplanes for years.. To paint an Aircraft which is made out of aluminum skins, you first have to prepare the aluminum surface... Not cheap here either... I know... I painted (myself) an 1946 antique aluminum skinned aircraft.. I used Imron...

Preparation, Preparation, Preparation.... and then, more Preparation..
This included the wings on this aircraft as they were also aluminum skinned.. We are talking a lot of surface area here with the top and bottom of the wings, stabalizer, rudders (yes 2 rudders) and then of course the entire fuselage...

Was not that much fun preparing, but it turned out beautiful....

Bottom line, use the right paint and preparation for the job.. If you want a cheap job, use cheap paint. If you want a paint that will last, use Imron, Awlgrip, or equivilant, and prepare the surface as recommended..

Good Luck


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