Stripping the bottom paint - SailNet Community
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post #1 of 22 Old 09-15-2010 Thread Starter
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Stripping the bottom paint

SO I know I can sand it .... not great to breath, need special gear and at 30 feet its a bear.

I know I can hire a company ..... $$$$$$'

I had a small 20 footer that I used 5F5 paint stripper and after I scraped it off I washed it down. Everyone told me not to do it. That was twelve years ago and that boat is still floating.

Whats everyone here think ?

Really appreciate it.

McSwiggin
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post #2 of 22 Old 09-15-2010
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You can use a fiberglass safe stripper, like Soystrip.

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post #3 of 22 Old 09-16-2010 Thread Starter
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Thanks Dog,

I did try a product this spring on a small area and it did O.K. but was going to take several coats to get down to the gelcoat. I didn't have the time as Summer was calling. It took off a thin layer.

Not sure it was soystrip.

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post #4 of 22 Old 09-16-2010
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For the most part a rigid razorblade holder from and auto parts store will make pretty fast work of bottom paint it is a very easy clean up

A 100 pack of blades is less than 10 dollars as they go dull pretty fast BUT as you refine your style it gets pretty easy to remove a lot of old paint

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If a dirty bottom slows you down what do you think it does to your boat
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post #5 of 22 Old 02-06-2011
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I don't recall the date or issue number, but Practical Sailor has reviewed chemical strippers. You may wish to check their site.
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post #6 of 22 Old 10-06-2011
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Practical Sailor did the latest update on bottom paint stripping in the current (October) issue.
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post #7 of 22 Old 10-06-2011
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The last time I stripped the bottom, used an orbital d.a. sander with a big shop vac attached. Getting a large shop vac attached and then dragging around a big vacuum hose is a PITA but a powerful vacuum really keeps the dust contained as long as you have the right disks with the holes lined up. An open coat 80 grit or so takes the paint off very, very quickly. With my old boat, I'm not concerned about maintaining a glassy gel coat so a rough grit is not an issue. Don't know if this would work with a fine grit to maintain a slick gelcoat but I suspect fine 220 or so disks would clog very quickly. In that case, a chemical remover would probably be the way to go. Will have to give one of those razor scrapers a try as mentioned above by tommays.
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post #8 of 22 Old 11-21-2011
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The last and only time I stripped the bottom was also with an orbital sander. I bought a really good face mask that enclosed my whole face, eyes included and it worked really well. A belt sander works well as well, and is not as dusty. I used 100 grit.
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post #9 of 22 Old 11-21-2011
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I'd rather leave a little paint than take anything off the barrier coat or gel coat. I've known some agressive grinders that made some expensive mistakes.
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post #10 of 22 Old 11-21-2011
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On a boat that had more things bad than i could count





Somehow under about 15 coats of bottom paint was PERFECT blister free barrier coat which i did NOT want to mess up

And i was not paying the soda-blast guy 2K

While it was painful to use a 3" carbide scraper it only took about 24 hours to reach intact barrier coat on a 29' hull without much dust at all



After a fast scuff and clean and more barrier coat the bottom paint was once again happy



After a full season of soaking the bottom paint is still happy
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