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Author Topic:   Removing Unwanted Bottom Paint
gnrgunner posted 07-15-2001 04:21 PM ET (US)   Profile for gnrgunner   Send Email to gnrgunner  
I recently purchased a 1983 13' Sport. The boat was in fair condition at the time, but now is in excellent condition after a 3 month restoration project. However, the only thing that I am a little disappointed with is the bottom paint. It is coming off and looked pretty ugly so I felt obligated to paint it over using a freshwater anti-fouling paint. I am now wondering if there is any cleaner or solution that would remove both coats of paint so it won't hide the curves and lines of the hull. Thanks.


jimh posted 07-15-2001 05:06 PM ET (US)     Profile for jimh  Send Email to jimh     
I am at the same point you are, Brad.

I'd like to remove the bottom paint, at least on the transom and hull sides down to the chine lines. It may be too hard to get it off the bottom (the hull is a 20-foot Whaler).

I was at the boat store today, staring at a gallon bucket of "Peel-Off" bottom paint remover ($50), but I decided to let that go until a couple of other projects are finished.

I think the consensus is that the "Peel-Off" product does the job. I don't know if we have had any first hand testimonials.


jimh posted 07-15-2001 05:10 PM ET (US)     Profile for jimh  Send Email to jimh     
One suggestion: when removing the paint don't use a metal putty knife--it is too easy to scratch the gelcoat.

I removed a small portion of the bottom paint and then spent several hours sanding, rubbing, and buffing out some scratches I left in the process.


Peter posted 07-15-2001 10:26 PM ET (US)     Profile for Peter  Send Email to Peter     
The product I used was "Peel-Away". I didn't strip down to the gelcoat. My goal was to get as smooth a surface as possible in view of the estimate that my 1986 Revenge had about 10 to 12 or more seasons of bottom paint, some of which was peeling off by itself. Since my Revenge is moored in saltwater, I must have bottom paint. The "Peel-Away" product softens the paint to the point where it just peels off with a wide spackling knife. Several applications would probably be necessary to get down to the gel coat. Although the chemical works very well, the process is very time consuming and is very messy. Although the chemical worked well, a lot of sanding was still required.
JAC posted 07-17-2001 06:57 PM ET (US)     Profile for JAC  Send Email to JAC     
I just joined the club, and am elbow deep in blue bottom paint. The only problem I am having , besides the mess and stained fore arms, is that once through the bottom paint I run into a grey paint on the gellcoat. ( I expect this was a primer)Stripper, acetone etc will not remove it. My only success has been sanding , where in several areas I have had to finish to the point of seeing the green glass. Does anyone have any experiance or success with this problem ?
Bigshot posted 07-17-2001 08:45 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Unfortunately you went through the gel into the green. Yes, the only way to get the primer grey off is sanding. Again, unfortunately you will have to paint the hull and the grey would have helped it stick.
DIVE 1 posted 07-17-2001 09:17 PM ET (US)     Profile for DIVE 1    
The gray you are finding underneath the bottom paint may be barrier coat. They make paint strippers that do not harm the barrier coat. They also make paint strippers to remove the bottom paint and barrier coat.
Peter posted 07-18-2001 10:51 AM ET (US)     Profile for Peter  Send Email to Peter     
See for info regarding product that removes barrier coat versus product that doesn't.

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