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Re: 23 Ft Catalina - Bottom Paint Job Time
The amount of time it takes to sand the bottom can take anywhere between 1 hour and 3-4 days, depending on the condition of the old bottom paint. If it's smooth and just needs a light sanding, an hour would be enough. If it has 15-20 years of accumulated layers of paint, and is peeling badly, then plan on 3-4 days to strip it all off and start anew.
If you have to strip it all off, you can have it soda blasted, or you can do it yourself by scraping it with a sharp scraping tool, or you can use a chemical paint stripper (not the same stripper used for house paint. Get a stripper especially designed for stripping paint from fiberglass.)
Rolling on each coat of bottom paint takes about 60-90 minutes. I use a 5" foam roller, because it puts on a smoother coat of paint, and wastes less paint than a fluffy roller with a thicker nap. When you're paying $130.-200. per gallon, saving paint is a valid concern. I use a high-end ablative paint, because it will save labor in the future. I usually don't use an extension. I prefer to get under the boat, closer to my work, where I can see how smoothly the paint is going on, but that's a matter of personal preference.
I highly recommend that you get a box of surgical gloves at the local drugstore. Don't get latex gloves. Get vinyl gloves. They cost about $10-15 per 100. They will stand up to the strong solvents without disintegrating, and, if you have to answer the phone, you can peel them off and throw them away, and the cost will be inconsequential.
I have wiped the paint with acetone, but don't like it because it is nasty stuff. I prefer to wipe it down with a tack cloth. It seems to do a good job of removing the sanding dust.
Last edited by Sailormon6; 03-07-2012 at 07:39 AM.