Should I sand old bottom paint off ? Is this a job to do yourself?, to be sure that all Blisters are removed? Thank You
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Justin - O'day Owners' Web
Blisters?
Patti - Does your boat have flaking bottom paint or are there blisters in the gel coat below the paint? If its the latter, you have a bit more work to do than just removing the bottom paint. Yes - removing bottom paint is something you can do. You need to wear propper protective equipment including a good respirator to protect yourself from dust. I would seriously reccommend Tyvek coveralls to avoid carrying the dust home in your clothing. Dust and flaked off paint needs to be contained and disposed of properly as it is Haz-mat. Justin - O'day Onwers' Web
Patti - Does your boat have flaking bottom paint or are there blisters in the gel coat below the paint? If its the latter, you have a bit more work to do than just removing the bottom paint. Yes - removing bottom paint is something you can do. You need to wear propper protective equipment including a good respirator to protect yourself from dust. I would seriously reccommend Tyvek coveralls to avoid carrying the dust home in your clothing. Dust and flaked off paint needs to be contained and disposed of properly as it is Haz-mat. Justin - O'day Onwers' Web
Do you have blisters?
Patti: Do you have blisters or is the paint just bubbled. If you have blisters you just need to open them up and let them drain. Depending on the weather temp/humidity this can take a couple of weeks to a couple of months. I don't really see any reason to remove the bottom paint to clean up your blisters until you decide what you are going to ultimatley do. If you are going to put a barrier coat on the bottom or change the type of paint, you make need to sand the entire bottom. Be sure to follow Justins advice on protecting your self and the environment. If this bottom paint kills kritters, you know it cannot be too good for you.
Patti: Do you have blisters or is the paint just bubbled. If you have blisters you just need to open them up and let them drain. Depending on the weather temp/humidity this can take a couple of weeks to a couple of months. I don't really see any reason to remove the bottom paint to clean up your blisters until you decide what you are going to ultimatley do. If you are going to put a barrier coat on the bottom or change the type of paint, you make need to sand the entire bottom. Be sure to follow Justins advice on protecting your self and the environment. If this bottom paint kills kritters, you know it cannot be too good for you.
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Jim Willis
Blisters etc
I haave only done this job once on my boat and it is about due again. I have put my (limited) experience and that of people I know and have watched together with info from a video from Gougon Brothers 517 684 7286 called Gelcoat Blister Repair with West System Epoxy. This is the subject of FIberglass Trilogy Part III. It will be sent out to people who we have e-mail addresses for During May 2001 and posted here on this website. Main points are: Yes take the precautions that Justin mentioned or get someone else to do it. Many yard now insist on wet sanding over a tarp because of dust problems and toxins going into ground. Sine yards use a chemical process called gelstrip to remove old paint. I might experiment with using IGP pink next time (it removes bottom paint dried drips etc so should work.) WHen my boat was hauled I was really excited to see no blisters at all. THen after a day or so a "rash" appeared on the bottom paint that was probably just in the bottom paint or epoxy barrier coat that I had. We sanded the rash off and applied fresh two-part epoxy to the area prior to bottom painting. Although I have read that water temperature is not involved in water penetration it was amazing that the most rash was on the side facing the sun. I also had some real osmotic blisters under the gelcoat (but not penetrating into the layers of glass fiber. THese were at the waterline, just above the barrier coat in the green gelcoat boot stripe. 0 My boat leans over a bit due to the batteries and this caused the waterline to be higher on that side. These were dried as much as possible but with daily yard charges, proper drying out costs are prohibitive (at least in HI) unless you go into dry storage. Then filled with 3M vinyl ester filler and sanded smooth. The yard people raised the waterline with barrier coat and then bottom paint. This was the worst job I have ever done and ended up exhausted and filthy. In the end the yard finished the job and applied the bottom paint. I have seen jobs done by ny friends in HI where dremelling right into the fiberglass layers was necessary. THe video I mentioned goes into the use of moisture meters, sand blasting etc etc. I will try to get together all the info out there for FTIII and would welcome "war stories". Incidentally Ladds in Stockton will allow proper drying out of the hull and in a "desert dry" summer environment. Of course that's when people want to go sailing. Perhaps a trailerable is the way to go after all! Jim W
I haave only done this job once on my boat and it is about due again. I have put my (limited) experience and that of people I know and have watched together with info from a video from Gougon Brothers 517 684 7286 called Gelcoat Blister Repair with West System Epoxy. This is the subject of FIberglass Trilogy Part III. It will be sent out to people who we have e-mail addresses for During May 2001 and posted here on this website. Main points are: Yes take the precautions that Justin mentioned or get someone else to do it. Many yard now insist on wet sanding over a tarp because of dust problems and toxins going into ground. Sine yards use a chemical process called gelstrip to remove old paint. I might experiment with using IGP pink next time (it removes bottom paint dried drips etc so should work.) WHen my boat was hauled I was really excited to see no blisters at all. THen after a day or so a "rash" appeared on the bottom paint that was probably just in the bottom paint or epoxy barrier coat that I had. We sanded the rash off and applied fresh two-part epoxy to the area prior to bottom painting. Although I have read that water temperature is not involved in water penetration it was amazing that the most rash was on the side facing the sun. I also had some real osmotic blisters under the gelcoat (but not penetrating into the layers of glass fiber. THese were at the waterline, just above the barrier coat in the green gelcoat boot stripe. 0 My boat leans over a bit due to the batteries and this caused the waterline to be higher on that side. These were dried as much as possible but with daily yard charges, proper drying out costs are prohibitive (at least in HI) unless you go into dry storage. Then filled with 3M vinyl ester filler and sanded smooth. The yard people raised the waterline with barrier coat and then bottom paint. This was the worst job I have ever done and ended up exhausted and filthy. In the end the yard finished the job and applied the bottom paint. I have seen jobs done by ny friends in HI where dremelling right into the fiberglass layers was necessary. THe video I mentioned goes into the use of moisture meters, sand blasting etc etc. I will try to get together all the info out there for FTIII and would welcome "war stories". Incidentally Ladds in Stockton will allow proper drying out of the hull and in a "desert dry" summer environment. Of course that's when people want to go sailing. Perhaps a trailerable is the way to go after all! Jim W
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Jay Beery
Bottom Sanding
Patti, I just finished my C22. The only thing I can add to this string is I wish I had a full face resperator. Full face is just that, it seals off your eyes too! I ended up getting some of the paint dust in my eyes even though I had goggles on. I recommend the West Marine catalog as it has lots of info on bottom paints and how to prepare the boat. Good Luck! Jay
Patti, I just finished my C22. The only thing I can add to this string is I wish I had a full face resperator. Full face is just that, it seals off your eyes too! I ended up getting some of the paint dust in my eyes even though I had goggles on. I recommend the West Marine catalog as it has lots of info on bottom paints and how to prepare the boat. Good Luck! Jay
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