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Re: lv-ab: Using epoxy for a water barrier

From: Bob Clinkenbeard (no email)
Date: Mon Oct 02 2006 - 17:53:08 EDT

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    Thanks to all for the very useful information.
    I found that my Porter Paint Supplier, has an industrial product for tanks,
    piping, handrails, etc....that is a two part polyurethane and it's
    primer...is epoxy. He says I shouldn't have to sand the epoxy coating I
    have applied, but I will do the proper amine blush wash and sanding to prep
    the surface to suit myself. I may use water paper to sand and save time.
    This product can be sprayed (thanks to the boat trailer gods) and should be
    top of the line as far as trailer finishes go.
    I looked at Interlux Perfection but it needed a tie coat, as was
    suggested..causing me to have to apply two more coats of primer before the
    finish coat. The cost of Interlux was 4 times more than the Porter
    industrial paint.
    I ordered my new axles, springs, stainless steel disc brakes and other parts
    for the suspension today. Hopefully by the end of the month I will be ready
    to bring my little trawler home.

    Bob Clinkenbeard
    24' custom trailer trawler
    http://home.bellsouth.net/p/PWP-aboardbobbinalong

    Subject: RE: lv-ab: Using epoxy for a water barrier

    > At 10:13 AM 10/2/2006, Ballantyne, Merrill wrote:
    >>Resoundingly, yes, it will degrade. Epoxy is not a paint, unless its
    >>epoxy paint. The problem tom, with painting over his epoxy coating now,
    >>is simply that it is too smooth, and chemically impervious (like you
    >>say) to most everything except UV. Because of this, it cant chemically
    >>bond to anything, and so he will have to sand the epoxy before anything
    >>(including more epoxy) will stick to it. ...
    >
    >
    > Well, actually no, there are many ways to paint over epoxy. And without
    > sanding a thing. My last boat had an epoxy glass cold molded hull and
    > deck and it certainly was painted very easily. Awl Grip shined like a new
    > penny and kept that brand new, freshly sprayed look the whole time we
    > owned it.
    >
    > Depending upon the epoxy used, and on the paint products going over it,
    > the paint people will be able to tell you exactly what tie coat is
    > necessary in any given application. No problems at all.
    >
    > It is when people try and home-brew painting solutions on the cheap that
    > the horror stories begin.
    >
    > Tom
    >
    >
    >
    > Tom & Jackie O'Meara
    > ex-Seaskate, Searunner 40 Tri

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