Westsail Owners Alliance - Post: "Hull Blisters"
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Post: "Hull Blisters"

12,268 posts on 2,444 threads   •   From Mar 07, 2004 - Jan 08, 2012


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- Archived Message from Inactive Forum -

Bud Taplin


A given is that all fiberglass boats will eventually get some blisters, unless the hull was laminated with, or covered with, epoxy or vinylester resin. The blistering occurs in the outer 1/8" to 3/16" of material, and since the Westsail hull is a solid 1/2" to 3/4" thick laminate, the blistering is not really a structural problem. My recommendation is to leave the blisters alone, until such time as the boat can be hauled and stored for a long enough time to thoroughly dry the laminate. At that time, the bottom paint and any loose gelcoat should be removed, and the hull permitted to dry out. Then dig out any loose laminate, and roll on a coat of epoxy resin. Fill any holes in the skin with epoxy putty, smooth the surface, then roll on 4 or 5 coats of epoxy resin. You may get other opinions as to the proper fix for the blisters, but remember, some some like redheads and some like blonds.

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This site is provided as service to Westsail Owners by  Jack Webb (s/v Drifter, Westsail 32, Hull #438)