Join Date: Mar 2006
Location: New England
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Originally Posted by Jeff_H
A couple quick points here,
-You should open up the blisters before your leave. If you do grind them out, make sure that you grind down into solid glass, and not just through the gelcoat. You should also cover the hull against driving rain but leave the cover open so that air can circulate.
-There was a misspelling in the above link to David Pascoe's site is http://www.yachtsurvey.com
-Peeling is generally believed to be better than grinding. Grinding builds up heat and at least one paper that I have seen suggests that the heat build up can undermine the immeadiate sub-layers.
-I am a big believer in laying up the repair with cloth and epoxy resin. I agree with David Pascoe's point about removing all unsaturated laminate
and filling all pinholes and with his point that unreinforced epoxy does not have the strength to bridge gaps. Using cloth adds to the labor involved in making the repair but it also helps guarentee a more permanent fix.
-While I understand and essentially agree with his point on Osmotic blistering, I personally have seen cases where water from the bilge has moved through the laminate causing major delamination. The worst cases of that that I have seen have been in keel cavities where poor laminate is more prevelient (its hard to work properly in a confined space like a keel cavity) and where water is often trapped against the interior of this inferior laminate.
Believe Jeff meant all saturated laminate
above... otherwise I agree with what he has said.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
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—Cpt. Mal Reynolds, Serenity (edited)
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