Blistering comes from shoddy construction techniques and/or builders saving
a buck, witch amounts to the same thing.
I had a 1963 35' Chris Craft Sailyacht that I sold in 1999 that had spent
it's life in Florida, Caribbean, Bahamian waters and NEVER had blisters. I
then bought a 1973 35' Chris Craft Caribbean (also a sailboat), that also
never had blisters. Apparently some builders maintained integrity through
the oil shortages of the 70's.
OTOH the boat I have now (1973 GS 41') had 7 roughly hand sizes blisters
that were fixed in the distant past (I found them when I stripped the hull
to barrier coat), I drilled a couple and found they had been repaired quite
well and were very solid. And since the underwater portion of the hull is
over 1 3/4 thick, I wouldn't get real excited if I were to find a couple new
ones on next haul out. If I had a cored hull and found blisters, I'm sure
I'd have a different attitude.
What really amazes me is that with knowledge of blistering problems, boats
are still being built AND bought with these built-in headaches.
MMC
"Bill" wrote in message
...

"Paul Oman" wrote in message
...
Does anyone have a clue about how long it takes for hull
blisters to form? Has anyone heard of them forming on a
new boat in less than a year? I have always suspected
they take a good long while to form, but have nothing to
back that up.

your thoughts please.


Paul Oman
progressive epoxy polymers

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See Pascoe's book on Power boats for an interesting discussion of
blistering. He doesn't even think that epoxy will save you from the
problem.