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Go Back   SailNet Community > On Board > Gear & Maintenance > Barrier Coat & Antifouling paint
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Thread: Barrier Coat & Antifouling paint Reply to Thread
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Topic Review (Newest First)
08-09-2009 10:18 AM
AA3NK
Quote:
Originally Posted by vadimgo View Post
If the Practical Sailor is to be trusted (and I do not know any other source of info with the same degree of thoroughness)...
I agree on Practical Sailor, they've been around a long time and have been thorough on most things I 've read.

Sanding the bottom is not the worst thing in the world, just dirty and leaves your muscles complaining--better yet that you only had to do light sanding. It probably helps that you are keeping up with maintenance regularly.

As to my rig, it looks like going with CSC on tacky epoxy will work out just fine. I'll only do one coat for this season and then put on a new coat in the spring and look for some other complicated and expensive way to improve what ain't broke! After I read enough on boat electrical wiring, I may redo the system in the mast next year.

Bob
08-09-2009 12:00 AM
vadimgo If the Practical Sailor is to be trusted (and I do not know any other source of info with the same degree of thoroughness) the Interlux ablative multi season paints are holding pretty good.
3 years ago I've sanded my bottom to gelcoat, used Interprotect barrier coat and Interlux Micron. 2 seasons later there where some barnacles and no other problems. This spring I've lightly sanded and painted again with Interlux ablative.
I expect it to be good only with minor touch ups for a couple of seasons again.
It makes sense for me to stick with the complete line of products from the same manufacturer for the whole job. And my opinion is the interlux products and customer support are not bad.
I would advise you to read their info on
yachtpaint.com
and following the directions should give you a great results.
I had little or no experience working on boats and if the current condition of my boat is of any indications anybody could do it. I would say, sanding off the old payers of paint was the hardest part.
08-08-2009 10:27 PM
AA3NK
Quote:
Originally Posted by SteveInMD View Post
I'm looking at soda blasting and doing a barrier coat after this season. From what I've read the barrier coat has to be done just right so it cross links the layers. I need to research this further, but I got that much from what I've read so far.
If you are going with the new barrier coat after the soda blast job, be sure to let the blaster folks know to take it all the way down to the gel coat. It is still a lot of hand and machine sanding after the soda blast.

I used the MAS epoxy materials, the slow stuff, and rolled it on with 1/4" foam rollers, it was easy to roll. The ratio is 2 to 1 resin to hardner for MAS so I mixed 24 ounces at a time, 16 ounces of resin and 8 of the catalyst. Stirring it with a paint stick worked Ok but if you have access to a drill and a paint stirring 'beater' it would probably be easier and more reliable.

The slow epoxy did not produce any amino flush, I rolled the coats succesively but had to stop after three coats for weather. Roughing up for the 4th coat was not easy but I had a contractor pack of sanding disks handy from the first part of the bottom prep.

Hope you folks are having some summer in Maryland, it has taken until August to see some semblance of summer in Massachusetts and even now it cools into the 50s at night--so much for localized global warming?

Bob
08-08-2009 08:06 PM
SteveInMD I'm looking at soda blasting and doing a barrier coat after this season. From what I've read the barrier coat has to be done just right so it cross links the layers. I need to research this further, but I got that much from what I've read so far.
08-08-2009 06:25 PM
AA3NK
Hmm, it is a very short sailing season this year?

What about this idea? Suppose I put the CSC on now, in green, stay in the water for about two months, pull out for winter and then in the spring put on a second coat of CSC in blue or red or any other color than green? The first coat in green would be the mark of when to stop sanding or removing bottom paint in future years.

Maybe I should just move out of Massachusetts and get a place in Virginia Beach where you can stay in the water all year! In the fall of 2010 I can redo the bottom and know if CSC is the right paint for my boat and the water conditions she operates in

Bob
08-08-2009 05:49 PM
AA3NK This Thread Topic sounded like information I am seeking so I'll start here and see if any folks can direct me to a more current thread that almost surely dates this one.

I have soda blasted, prepped and applied three coats of MAS Epoxy to my Cheoy Lee 36. I am at the point for completing the bottom work, I want to put on two more coats of epoxy for a total of five coats. The plan is to roll the epoxy coats about six hours apart, say 08:00 for the first coat, 14:00 for the second coat and then apply a "tie coat" to the last coat of epoxy to bond the paint with the barrier coat.

I am planning to finish the bottom in Micron CSC but that coat will be the wetted surface, not the intermediate coat that ties in with the epoxy. What kind of paint could/should I use that is somewhat a permanent bottom coat? Since it will not be the actual antifoulant exposed surface, could I use a less dense product like, for example, Fiberglass Bottomkote? Maybe some other type of paint would be better suited? The general purpose is use a color so I'll know when to quit removing bottom paint before getting to the "tie coat."

Please share your thoughts or experience in this matter or perhaps a link to the various threads where this may have already been discussed.

Regards,
Bob
06-07-2001 09:16 PM
jdmrussell56
Barrier Coat & Antifouling paint

Suggest you contact Interlux for expert advice. They really helped me with a problem I had.

Interlux can be reached at 908-686-1300. I think you will find the cost of the phone call well worth it.

06-06-2001 05:51 PM
shipley
Barrier Coat & Antifouling paint

Need recommendations on barrier coat and antifouling paint. I have just pulled my 34 fiberglass sailboat (Irwin)out for a move & bottom painting. It hasn''t been painted for several years, doesnt have a barrier coat and the current paint is cracked and blistered badly. I just started removing it with a scrapper. So since I am doing it myself and I have been out of the boating scene for several years, I''m looking for suggestions. I''ve just moved the boat from New Jersey to San Francisco and will be keeping it in the bay (Richmond/Berkley area - salt water)and dont'' want to keep yanking it out for painting every 6-12mo.1) easiest way to remove the current antifoul paint (2 layers), 2)should I remove the primer coat between the hulls gel coat and antifoul paint to apply a barrier coat,3) best type of barrier coat and antifoul paint for casual cruising and brand name if possible 4)paint application ideas, 5) is there any type of paint that should go on between the barrier coat and antifoul to increase bonding and product performance - Thx!

 
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