Hi Danny, Can I ask who did the walnut stripping on your boat and at which yard? I'm having my "new" 1983 Landfall 35 brought down from the North Shore of Mass to the South Coast in early January and the bottom paint is flaking off in chunks, revealing the shiny original gel coat underneath in most places. I would say that the paint over shiny gel coat method was not terribly effective for adhesion.
Speaking to the service manager at Concordia about soda blasting, he tells me that the soda medium leaves a very rough finish on the bottom that takes a significant amount of labor to prep the bottom afterwards to allow bottom paint go on nice and smooth. Perhaps he was also implying that the boat should have a barrier coat added as well. either way, with soda blasting and subsequent bottom prep, we were talking in excess of $5000. With that info, I had planned to chip off as much of the old paint as possible, sand down the rest using and orbital sander with a vacuum attachment, leaving just enough "tooth" on the gel coat hull surface to repaint. It would be a lot of work, but I could do it in my yard and build my upper body strength at the same time! However, the walnut shell medium sounds like it may be the ticket if it is less invasive to the gel coat than soda blast and if I basically want to start with a blank canvas of a hull to prep and paint. Would love to hear from others that have used the walnut shell method and what they've done to prep afterwards. Best, Chuck Gilchrest S/V Half Magic 1975 25 Mk 1 S/V Orion 1983 Landfall 35 Padanaram, MA From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Danny Haughey via CnC-List Sent: Wednesday, December 23, 2015 8:38 AM To: cnc-list@cnc-list.com Cc: Danny Haughey <djhaug...@juno.com> Subject: Stus-List Stus List - Bottom Job Hello guys, I just heard from the yard. they walnut strip the bottom. He told me it was the best looking bottom he'd seen in a long time (well, thank you very much!)! he even said the original coat of paint was still on it and the hull was shiny as the day it came out of the factory after the walnut blasting. I'm impressed by this in that, the general consensus is to sand the gelcoat to get the shine and any wax off so the bottom paint has something to stick to. He said they need to sand before doing the bottom coatings which adds maybe 2 man days to the labor. Do you guys have any insights or thoughts on this topic? I mean if they say it is a necessary step to sand, and he is indicating it had not been done, why would the bottom paint not have failed? Danny T40 Rum Runner IV Mattapoisett, MA
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