Next message: Kerri v: "Re: TWL: Broker suggestions"
I read the recent posts about Interprotect 2000, and how it requires a very
demanding coating schedule. This reminds me of the bottom job I did on my
Albin 33 about 5 years ago. Since I still hold a day time job, I did not
have the luxury to follow the narrow windows recommended by Interlux printed
on the can. I called them and ask whether they really meant what they
printed, and the application engineer told me to try Interprotect 3000
instead. I was so relieved when I read the label of Interprotect 3000. It
is much easier overall. First of all the windows for subsequent layers are
much much wider, something like 7 days as opposed to 8 hours. Second, the
numbers of layers required is lower. Something like 3 as opposed to 6
because supposedly it is high solids, and builds up thickness faster. If
memory serves me well, the antifouling paint does have to follow the last
layer of Interprotect 3000 before it cures entirely, which forces me to take
off too much time from work. To circumvent that problem, I called Interlux
again, and the engineer told me to use a product they sell called something
like "no sanding primer". This primer can be rolled on to the thoroughly
cured barrier coat, and dries up in something like 30 minutes. Then it is
ready for bottom paint. Actually the primer dries up so quickly that you
need to develop a certain skill to put this thing on without looking too
sloppy. When I say it dries in 30 minutes, I mean it is ready to be
recoated in 30 minutes. The actual drying time, as in touch dry, is more
like 45 seconds. To complicate matters, the darn primer contains a certain
grit in it that settles to the bottom of the tray. Thankfully, nobody will
see how pretty a job you did because it will all be buried in the end.
Having said all this, how did the job hold up? Sad to say, some blisters
re-apperead. But in hind sight, I don't think that the culprit is in the
Interlux products, as much as it was because I did not let the hull dry
sufficiently before barrier coating it. I let it dry for only a couple fo
weeks, as opposed to a couple of months. Worse yet, I cleaned the blisters,
and gouged them out only days before epoxying them shut again. In hind
sight, I should have let the open blisters dry up for the whole winter, and
come back in the spring to finish it up.
But the point of the post is that you should consider Interprotect 3000 if
your schedule is not flexible.
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