I guess the word 'epoxy' in the name can be taken to mean that it *is* epoxy
and is therefore waterproof (albeit not always true either) and works as a
barrier to water ...and it can be taken to mean that it provides a barrier
to the epoxy itself so that certain paint (or other primer) chemistries will
work on the boat. I always took it the second way, but that's probably
because I never keep a boat in the water ...I'm a trailer sailor and can't
afford the upkeep and annual hauling in/out fees that go along with keeping
a boat in the water. At least not yet ...grinz.
Brian
"Jim Conlin" wrote in message
...
To me, 'barrier coat' means a coating intended to be seriously impermable
in
continuous immersion and an effective barrier against osmotic blistering.
I
don't think that there's disagreement that 404/414 is an OK primer under
LPU
paints for topsides and intermittent immersion. One thing it's not is
impermeable. It's so loaded with solvents that it's quite porous.
The best guide is the pamphlets published by the paint manufacturers. In
them, they do a pretty good job of descrtibing the 'systems' of coatings,
from bottom to top. They're not ambiguous.
"Brian D" wrote in message
...
I'm curious ...I gave away my last bit of 404/414 so don't have a label
to
read, but who's description was misleading? Interlux's? Or was the
description ambiguous instead? You know ...poorly written and could
apply
equally well to more than one (conflicting) type of use? Have you called
the rep and told him about your experiences? Might save some newbies
headaches later on if the labels were clearer... Most companies won't
want
you to be unhappy because a product was used for the wrong type of
application.
Brian
"Robert or Karen Swarts" wrote in message
...
Thank you all for your comments.
For the record, I ended up thinning it about 20% with alcohol. This
worked
well as far as thinning is concerned, but the alcohol apparently
evaporates too fast. It is impossible for the brush strokes to flow out
well. So -- more sanding. The good news is that it finds, and with
persistence, fills -- or at least coats -- about every pin hole in the
resin base. It dries quickly and appears to sand well. I am actually
using
it as a primer under Interprotect 2000 BTW.
This is the second time I have purchased Interlux products which have
been
described as applicable to things I later found out they were not truly
suitable for.
BS
"Robert or Karen Swarts" wrote in message
...
Just for the record, Jim, the can is labeled Epoxy Barrier-Kote. And
the
catalog describes is as suitable for above or below water
applications.
The directions also state that it must be thinned.
Thanks for your thoughts.
BS
"Jim Conlin" wrote in message
...
Interlux 404/414 is not a barrier coat. It's a sandable primer whose
function is to provide a tie coat between sime substrate and an
impervious
finish coat such as an LPU paint. If applied as directed, it's just
loaded
with expensive solvents and is consequently pretty porous. Useless
under
bottom paint. If you are using it as a primer under finish paint
and
not
under bottom paint, go for it. I'd try acetone. Let us know your
result.
"Robert or Karen Swarts" wrote in message
...
Can I successfully use acetone to thin epoxy barrier coats? I am
thinking
of
Interlux 404/414 in particular, but the question is also a general
one.
I am aware that there are proprietary products for this application,
but I
need to paint tomorrow morning, and the nearest dealer is about 60
miles
away.
Bob Swarts
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