When thinned as directed, 404/414 is very porous and only prevents the
passage of bacteria and up. 404/414 is not a barrier coating in the sense
that it prevents osmotic blistering ('pox'). Not the usual meaning of
'barrier coat', in spite of interlux's labelling. The Interlux product for
that is Interprotect 2000. . Being epoxy-based, it provides good
mechanical bond for oher finishes.
"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