Copper Free Bottom Paint

Nov 13, 2013
723
Catalina 34 Tacoma
If not having your hull cleaned is not an issue for you, my philosophy is- If it ain't broke, don't fix it.
If I use ablative, that means I have to haul out to clean. If I use a hard epoxy, (or whatever ), I can clean in the water. That's the way I see it. Given those circumstances, what type of hard bottom paint that I can clean in the water would you recommend? Or is there something else to consider?
 
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Feb 26, 2011
1,440
Achilles SD-130 Alameda, CA
If I use ablative, that means I have to haul out to clean. If I use a hard epoxy, (or whatever ), I can clean in the water. That's the way I see it. Given those circumstances, what type of hard bottom paint that I can clean in the water would you recommend? Or is there something else to consider?
As far as hard paints go, there is nothing available in the U.S. that has better anti fouling properties or durability than Pettit Trinidad, IMHO.
 
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Nov 13, 2013
723
Catalina 34 Tacoma
The drawback with the hard epoxy is you get paint build up over time that necessitates additional maintenance. How big of an issue is that?
 
Feb 26, 2011
1,440
Achilles SD-130 Alameda, CA
The drawback with the hard epoxy is you get paint build up over time that necessitates additional maintenance. How big of an issue is that?
Well, everything is a compromise. But you probably don't have to worry about removing old paint for 10-15 years.
 
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Gunni

.
Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
The drawback with the hard epoxy is you get paint build up over time that necessitates additional maintenance. How big of an issue is that?
About $4,000-$5,000 for a 40 ft boat depending on paint removal method :biggrin:, plus epoxy barrier primer, plus new paint. Ablatives self polish pretty well and if you don't over-apply you don't get build-up; avoiding this expense and effort.
 
Nov 13, 2013
723
Catalina 34 Tacoma
So how do you do that? Sand with a vacuum sander down to fiberglass? Strippers?
Strippers with vacuum sanders?
 
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Gunni

.
Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
Sand it down to the gel-coat, and epoxy prime, or soda-blast. If you use a stripper, you still have to sand the gel-coat to give it tooth. I went back with a base of Trinidad hard paint, and then HydroCoat soft ablative. When I see Trinidad, time to roll on another coat of HydroCoat.
 
Nov 13, 2013
723
Catalina 34 Tacoma
Sand it down to the gel-coat, and epoxy prime, or soda-blast. If you use a stripper, you still have to sand the gel-coat to give it tooth. I went back with a base of Trinidad hard paint, and then HydroCoat soft ablative. When I see Trinidad, time to roll on another coat of HydroCoat.
Or...just reapply ablative and haul to clean.
Cost to haul and clean about $350 each time.
I guess it depends on how long one plans on keeping the boat.
 
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Oct 26, 2008
6,244
Catalina 320 Barnegat, NJ
What do you have under the ablative? If you already have an epoxy barrier under ablative and you need to remove the ablative to install a hard anti-fouling paint, is there any need to soda blast down to gel coat if you already have a good barrier paint applied? I would guess that you would try to avoid removing a suitable barrier paint.
 
Oct 26, 2008
6,244
Catalina 320 Barnegat, NJ
About $4,000-$5,000 for a 40 ft boat depending on paint removal method :biggrin:, plus epoxy barrier primer, plus new paint. Ablatives self polish pretty well and if you don't over-apply you don't get build-up; avoiding this expense and effort.
For my 27' boat, it was about $4,300 total to get a new bottom. A little more than half was spent to remove the old layers of "hard" paint (not barrier) and repair the bottom after sand blasting.
 

Gunni

.
Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
Or...just reapply ablative and haul to clean.
Cost to haul and clean about $350 each time.
I guess it depends on how long one plans on keeping the boat.
Yes, you have to haul and clean the bottom, then scrub the remnants, and paint. Welcome to boat ownership brother!
 
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Nov 13, 2013
723
Catalina 34 Tacoma
What do you have under the ablative? If you already have an epoxy barrier under ablative and you need to remove the ablative to install a hard anti-fouling paint, is there any need to soda blast down to gel coat if you already have a good barrier paint applied? I would guess that you would try to avoid removing a suitable barrier paint.
I don't know for sure but I would guess more ablative is underneath. I don't know if you can distiquish between layers of paint to know when to stop blasting. Anyway, I'm leaning just to put on another ablative coat. Seems like a lot of upfront costs for the hard coat and I'm not sure how long I'll have the boat.
 
Nov 13, 2013
723
Catalina 34 Tacoma
Yes, you have to haul and clean the bottom, then scrub the remnants, and paint. Welcome to boat ownership brother!
I get ya. I should have been more clear. I should have said...
Cost to clean bottom with ablative $350 (assume haul out)
Cost to clean bottom with hard epoxy. $100 (assume diver)
Upfront cost of ablative $500
Upfront cost of hard epoxy $4700