"katysails" wrote in message

We tarp and humidity gets under there...what we have found is that there
is a direct relationship to the proximity of the wood pulp factory to
where our boat is moored and stored...Muskegon is an industrial town and I
think air pollution might explain some of it...our varnish jobs lasted
better when we were up farther north away from industry....

I never thought about that, but you are correct: the paper company's
effluent is acidic, with a pH around 4 or 5. It wreaks havoc on isenglas,
and I suspect it would be tough on varnish, too, if held against it via
condensation during the off-season months.

and yes, Max's boat is worth the effort of varnish, but hey, he likes
cetol, so who am I to complain?

I actually don't like Cetol, but it's a compromise between time spent
refinishing and time spent sailing/sunbathing/swimming/partying/et.al.

Max