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Old 04-16-2008
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camaraderie is a jewel in the rough camaraderie is a jewel in the rough camaraderie is a jewel in the rough
Steve D'antonio is one of the most often quoted experts on the peel and repair approach and his advice is:

"The relaminating process using VE
resin, after the hull has been peeled
and properly prepared,
must incorporate a minimum
of two laminate
layers or 1/10 of an
inch of laminate. This
depth of applied material
ensures that an
appropriate exothermic reaction or
heating takes place. This reaction is
necessary for the resin molecular
chains to interlink properly. Ideally,
the laminate that is removed should
be duplicated exactly, once again to
the previously stated minimums. Any
FRP material that is removed must
always be replaced. Although it is
tempting to add a little more, chances
are good that the naval architect who
designed your boat knew what he
was doing, and thus, his laminate
schedule is appropriate and is worthy
of duplication. For the same reason,
failing to replace some or all of the
removed material is forbidden.
VE resin has a higher tensile
strength and tensile elongation factor
than the original PE resin as well as
possessing excellent secondary bonding
attributes. Provided the moisture
analysis, peel, preparation and lay-up
are carried out properly, the relamination
should be quite strong and
immune to future blisters.
Epoxy barrier coat
The final step and what may be
termed the suspenders of a belt-andsuspenders
approach is the application
of an epoxy barrier coat over the
relaminated hull. My preference is for
a high-solids, epoxy-based, warranted
coating that is backed by a reputable
manufacturer of marine products.
Resist the temptation to use products
that make incredible or fantastic
claims. Instead, go with a proven performer
who has a long-term track
record of standing behind their product."

See complete article on blister causes and correction process here:
http://www.zimmermanmarine.com/docs/blisters%201.pdf

P.S....I think you got a lot more than gelcoat!
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