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Old 26-09-2020, 18:38   #1
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How to remove 8"wide painted stripes on 19' boat

Hi,
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I have an O'day 19 that I have decided that I would like to paint the hull above the waterline (above the ablative paint). I would like to use a two part paint like Interlux Perfection but I've got a hand painted stripe that goes from 6" wide in the back to 8" wide at the tip of the bow. I have no idea what kind of paint it is. It is chipped and faced and scratched. It looks like more than one layer of paint and probably a primer. I attached two photos, one a close up of a section of the broad shot. The darker color is what shows up when I hit some of the looser top color with my pressure washer. The white areas are actually pale blue from nicks and deep scratches.

I will need to completely remove the stripe if I want to use a 2 part paint, but I don't know how. If it is not polyurethane, I might try a product called Marine Strip (but they say it won't work on polyurethane). If it is, I am reading about Acetone or Easy-off oven cleaner, and then there was an Interlux stripper that is no longer available This is what I have come up with so far searching the web. I don't know what to do that will be safe for the gel coat. I have never painted a boat before, so this is a big undertaking for me. But first I have to solve this stripe problem. I am planning to paint the boat a cream color or something less white than it currently is. Then just put a wide vinyl pinstripe on it

Thanks for considering this.
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Old 26-09-2020, 18:49   #2
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Re: How to remove 8"wide painted stripes on 19' boat

Hi, looks like a crappy red paint job over a slightly darker red. Could this be an original red gelcoat?
If so then strip the topcoat using one of the paintstripping gells, judging from the pics there appears to be little to no prep prior to the topcoat so it may be quite easy.
If the base is gelcoat then I would acid wash the entire hull, buff and polish. Way less work than a repaint leaving more time to go sailing.
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Old 26-09-2020, 18:50   #3
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Re: How to remove 8"wide painted stripes on 19' boat

5' orbital sander and a few hours of your time.
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Old 27-09-2020, 08:48   #4
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Re: How to remove 8"wide painted stripes on 19' boat

Uncle Bob, There are other reasons for painting not shown in the picture. To this reply, I am adding a couple more pics close up. I would like to use a stripping gel, but don't know what to use that is good and won't hurt the gel coat. It depends on the type of paint I think. I don't know what to test the paint with, without purchasing a gallon or quart of the stripper.
Wotname, I am planning to sand, but would rather remove what I can with stripper first.

Thank you.
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Old 27-09-2020, 11:11   #5
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Re: How to remove 8"wide painted stripes on 19' boat

Uncle Bob,
Looks like you called it right. I tested the paint with some nail polish remover (watered down acetone). It dissolved the outermost coat of red and did not affect the darker red. Then I sanded with some 320 sand paper and found that yes there is a red stripe in the gelcoat followed by a thin layer of blue paint (primer?), followed by a thin layer of dark red paint, and then a thick layer of the bright red paint.

and Wotname is right too I could sand it all off. The question is can I speed things up using a stripper gel, if if so, what kind? I took a pic of what I sanded (see below). It is interesting that the gelcoat layer doesn't have clean lines. And to do sanding what grit should ould I use... 220?

One other item, that you brought up, Uncle Bob, was whether I need to paint. If I didn't paint, what would I do to deal with the digs and scratches and the area of pure white that I created using some 2 part ] gelcoat with wax, that I used a few years ago to deal with some cracks. The difference in color is more pronounced in real life than in the photos. See second pic. I have this white on both sides. This is why I am thinking paint. Plus some more stuff on the transom.

Thanks again.
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Old 27-09-2020, 11:13   #6
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Re: How to remove 8"wide painted stripes on 19' boat

OOps, forgot to post his pic.
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Old 28-09-2020, 09:50   #7
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Re: How to remove 8"wide painted stripes on 19' boat

What your going to spend on stripper is not worth it , imho.
Just sand it down with a cheap Walmart Or Harbor Freight orbital, start with 150 grit and maybe then 220 . Follow with two coats of your rolled on paint.
A good two part will take care of any nicks in your gelcoat.
Don’t complicate it . Go sailing !
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Old 28-09-2020, 11:37   #8
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Re: How to remove 8"wide painted stripes on 19' boat

Thanks Thruska.
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Old 28-09-2020, 14:55   #9
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Re: How to remove 8"wide painted stripes on 19' boat

Try a heat gun? Just don't point it in one spot for too long.
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