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post #1 of 10 Old 03-28-2012 Thread Starter
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Bottom paint for boat

More of a general question of sorts for bottom paint. I've heard from a few friends and family members that you'd want to repaint the bottom of the boat every month and some have said every quarter. I know there are a lot of things that play into this question but in general how often should you have to repaint?
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post #2 of 10 Old 03-28-2012
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Re: Bottom paint for boat

Depending on the location and how bad the fouling is in your area, but can go from annual touch ups to a paint job every 2-3 yrs. depends.

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post #3 of 10 Old 03-28-2012
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Re: Bottom paint for boat

How about cleaning the bottom monthly to qtrly depending upon where you live. But new bottom paint monthly?!?!?!?!? never heard of that. Yearly in some worst case scenario's, to every 3-4 yrs depending upon the where you live, etc.

I sometimes clean parts of the bottom every 2 weeks when racing, some weekly if really into a clean bottom and racing. Cruisers, ad twice the time depending upon the region.

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post #4 of 10 Old 03-28-2012
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Re: Bottom paint for boat

They mean bottom cleaning - not painting
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post #5 of 10 Old 03-28-2012
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Re: Bottom paint for boat

Yes.. in most areas annual bottom paint would be the highest frequency.. in many cases with some judicious scrubbing you'll get at least 2 seasons out of good paint, sometimes more.

Painting monthly or quarterly is just silly.. costly, wasteful and too much work!

Ron

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post #6 of 10 Old 03-29-2012 Thread Starter
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Re: Bottom paint for boat

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Originally Posted by Faster View Post

Painting monthly or quarterly is just silly.. costly, wasteful and too much work!
Thats what I was thinking but the person is pretty animate that I am wrong and due to this person being family it can be pretty murky waters wading through that. I think its more her view after owning a speed boat that her ex was pretty hard on but she thinks its the same with sailboats in general.

Well this answers my question thanks a lot for everyone who was kind enough to leave an answer.
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post #7 of 10 Old 03-29-2012
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Re: Bottom paint for boat

"IF" you family member had a very HIGH speed speed boat, ala a deepV cigarette style, motored very fast all the time, put on a thin coat of ablative bottom paint.......I could see it not lasting that long. But a sailboat or a PB at speeds under 20-25 or so, a decent paint job, be it ablative or hard paint, should last as noted. Then again, not to say "all blonds are dumb", but could she be on that end of the spectrum? or the husband is saying new paint, but cleaning monthly and she is hearing painting........multiple reason/excuses for her comments that could be wrong and right at the same time.

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post #8 of 10 Old 03-29-2012
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Re: Bottom paint for boat

" I've heard from a few friends and family members that you'd want to repaint the bottom of the boat every month" "due to this person being family"

Oh heck, get a divorce, or tell him next time he comes around to bring enough drugs to share. Either he's goofing on you or he's got some serious misinformation.

If you want to lead him on, tell him THANK YOU you checked it out and as a matter of fact, you're going to repaint the boat next week, can he show up at 8AM to help you?

Needless to say, don't show up, and curse him out for not being there to help you anyway.

Yeah, my boat yard gives me a great prepaid rate for paying for all twelve hauls up front, so they can haul it and I can paint it every month of the year. And I get the bulk rate for buying my paint all in advance, too. Ahuh, sure.
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post #9 of 10 Old 03-29-2012
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Re: Bottom paint for boat

When folks offer information or advise that just sounds silly a reasonable response is to thank them, then change the subject.

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post #10 of 10 Old 03-29-2012
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Re: Bottom paint for boat

most commercial ablatives are good for 30 months (130 weeks) minimum assuming a working boat (40hrs plus a week) in motion (speeds up to 30 knots) How fast would a boat have to move and for how many hours underway to reduce that number by 30 times? that is 5200 hours at 30 knots or total distance of 156000 knots between re-coats. Running 24/7 for 1 month at 216 knots per hour it might be right.
What type of sails are you running ???
Not trying to be a smart a$$ but just wanted to share the math for ablative paint.
These calculations came from the datasheet from Jotun International

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