Preping topside for painting - Page 2 - SailNet Community

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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #11  
Old 03-16-2010
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I absolutely recommend using a solvent wash prior to sanding. If you don't remove the waxes, oils, etc., sanding will spread them around and it can cause problems with the paint. Without access to an auto paint shop I'm not sure what to recommend you use, maybe someone else can recommend a common product that will do the same as the Interlux solvent, or Final Wash that I have used. I would think after de-waxing the hull a sanding would be in order but I wouldn't try to take all the "pimples" out, just rough up the surface and then use a high fill type of epoxy primer (or whatever is recommended for your top coat). Keep sanding the primer coats until the surface is smooth. If you want it like glass then you can use a long board after spraying the primer with a rattle can of contrasting color to find the high and low spots. It's a lot of time and work, good luck on the project.
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Old 03-16-2010
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Well I talked to the guys at Interlux and they of course recommend 202 solvent wash but say you can use acetone or denatured alcohol as well. The difference will be that the 202 evaporates slower so you can wet it down and wipe it off easier. With Acetone or Alcohol you need to be wiping it off almost as quickly as you apply it. Asked him about spraying or roll and tipping it and he said either works well. As I said I have a friend who can spray it for me (and yes he has all the equipment as he does it for a living) or I can roll and tip it myself.
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Old 03-16-2010
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I'd go with the 202 solvent wash. Use lots of clean rags, so that you don't accidentally re-deposit the wax/grease/oils on the surface.
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