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post #81 of 105 Old 07-03-2008
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I applied 14 coats of epoxy.. so it took a while... (in the winter you have to wait for the right temp..)
14 coats ! I am wondering, if the beam of your boat is now wider, lol
That is a lot of epoxy.

S/V Scheherazade
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I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
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post #82 of 105 Old 07-03-2008
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Well.. it was a complete new bottom.

Peeled then re-built. So it's just as thick as it was!

Of course it took about a month to do.... but I am so far pleased with the results. The true test will be when I haul it this winter and inspect it.

-C2
1987 Sabre 34 "Saoirse"
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post #83 of 105 Old 07-16-2008
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First things first, you guys have been very helpful and informative, I feel like I am ready to move forward on the project and will do it entirely over a 24 hour period as soon as I can get down there. And, I am still going to use the MAS product.

I never got a return phone call from Tony. He doesn't owe me or have any duty or obligation to answer every low end user phone call he gets. I still don't know the answer as to how much I'll probably need and equally important, which catalyst to use in August. So, I'll get the slow stuff and pace myself. I am figuring on a total of three gallons of resin to do six coats. It mixes 2:1 so that ought to be beau coups product for a full keel 36 footer with 24' at the water line.

I'll make some pictures as the project comes along for future reference.
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post #84 of 105 Old 01-28-2009
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On the same theme,
I've scraped of the CSC off the bottom of a 3700 (because it was falling off anyway) and was debating weather to put on a barrier coat of 2000E. The gelcoat is vinylester am I wasting my time?

02
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post #85 of 105 Old 01-28-2009
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If you're down to the bare gelcoat, there is really no good reason not to barrier coat.

Sailingdog

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post #86 of 105 Old 01-28-2009
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Quote:
Originally Posted by 02VETTE View Post
On the same theme,
I've scraped of the CSC off the bottom of a 3700 (because it was falling off anyway) and was debating weather to put on a barrier coat of 2000E. The gelcoat is vinylester am I wasting my time?

02

Definitely do it, but be sure ALL the old paint is off. Post a pic if you can

Cheers,
Shawn

S/V Windgeist
1982 Tartan 37C

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post #87 of 105 Old 01-29-2009
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Thanks,
There is still a bit more to go but will be sure to get it clean. I've read the recommend prep instructions and will need to sand after a solvent wash. Tartan doesn't like you sanding the vinylester but this boat is an '02 and is out of warranty so I feel this would be a good move to barrier coat. Will do my best to get some pics posted.
Regards
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post #88 of 105 Old 01-29-2009
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Last spring I paid one of the guys at my YC to sand the BC off and made sure I was the one working on the blisters that were under a 100 in number. But then who was counting? She's now sporting 5 coats of 2000E and I'm very happy with it! When we pulled the boat in the fall all the slime washed off and the WM generic bottom paint looked like the day we painted it on! Hard to tell in the pic but we faired the bottom where the so called encapsulated keel to hull joint is. It's still fair and unchanged so I guess the keel isn't falling off! I suggest any filling of dings or other blemishes are done with something other then pure white so you can see the repair. I had been using only West System products. So I must say using another epoxy product like Interlux's 2000E was a leap of faith and I'd also seen it applied to at least 3 catalina 30s. This is what she looked like after the sanding. We did not use anything less then 80 grit so the barrier coat would have a good bond mechanically as well as chemically.



Good luck on your project! system 3 is good stuff too! I used it on strip canoes long before I went to west systems.

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
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My last project!
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My boat is sold!

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post #89 of 105 Old 01-29-2009 Thread Starter
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Hey,

Barrier coat is a good thing, but it's a little more complicated than just "remove old paint, clean, apply barrier coat."

Depending on the particular barrier product you are using, there are all sorts of restrictions on when you can apply the barrier coat (temperature), how many coats of barrier you need, how much time you need to wait between applying the coats (and how long is too long), and finally, when you MUST apply the antifouling paint.

Note that most barrier coats are epoxy based, and epoxy tends to be slippery. Wait too long for the epoxy to dry and the antifouling may not stick to it.

Again, I used Pettit Protect and followed the instructions VERY carefully. I applied the bottom paint when the last barrier coat was still tacky. I had excellent adhesion of bottom paint. The antifouling didn't work as well as I hoped (a fair amount of growth) so I will try a different type next year, but the paint stuck well to the barrier coat, and I have no blisters.

Barry

Barry Lenoble
Deep Blue C, 2002 C&C 110
Mt. Sinai, NY

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post #90 of 105 Old 01-29-2009
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Well, I for one...

am glad this thread got resurrected. This has been a discussion item w/in my group for one of our boats. I personally have used WEST and MAS in the past for various projects and boatbuilding. I like them both although the MAS 2:1 ratio is more user friendly.

Thanks for all the helpful hints. (The electrical tape hint really does work too!)
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