Unexpected blister

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Posted by John Musgrave on February 14, 2005 at 03:18:58:

Posted by John Musgrave on November 24, 2002 at 06:36:30:
This spring I got ambitious and removed all previous antifouling from the bottom of my Beneteau 26, 1984. I do not think it had ever been done before. Then I rolled on three coats of West System epoxy and congratulated myself for having protected the hull better than it had ever been. BUT on hauling this October, to my chagrin, I found a single lesion, 3 cm diameter, elevation maybe 3 to 4 millimetres, in the bow section, which exuded some clear fluid through what seemed to be a pinhole sized hole in the gelcoat. Is it likely that a hull previously free of osmotic blisters could have suddenly started to develop them, and if so, could the epoxy sealing have accelerated the process (as I have seen suggested somewhere)???

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