[Public-list] Bottom Job

[John Irving]

I've been considering an epoxy coat "bottom job" as well because I'll
be replacing bottom paint in the next year or so.

I got an opinion from a trusted boatbuilder who advised against epoxy
barrier coating unless the owner is already making significant blister
repairs. He felt that problems can be created by sealing moisture *in*
the laminate and blocking its avenue of migration out. He was aware of
instances where epoxy coating a hull as a preventative measure
actually caused blistering where none existed before.

I'd appreciated hearing about the experiences listees have had with
epoxy barrier coating.

John #284

On Thu, 20 Jan 2005 08:41:10 -0800 (PST), Michael Connolly
<crufone at sbcglobal.net> wrote:
> Roger,
> Gougeon Brothers, Inc. publish several booklets that detail procedures for fiberglass repairs.  One is specific to Gelcoat Blisters.  When I did a bottom job I found that the Technical folks at Interlux were superb.  Since you are doing the full Monty I would strongly recommend applying an epoxy barrier coat of your choice.  I used Interlux products exclusively and have been very pleased with the results.   Oh yeah..  be sure to visit Popeyes web site to purchase the final top coat.
> Michael
> 
> Roger L Kingsland <rkingsland101 at ksba.com> wrote:
> Albergers,
> 
> In asking about "careening ship," I forgot to ask the more important question. How do I do a bottom job? The deck and topsides are ready for paint. I have gotten down to the gel coat a few inches below the boot stripe and discovered a total of about one square foot of blisters. I don't know if this means I should expect more or the hull is in good shape. Is it customary to sand blast everything then refinish the hull or should I take less drastic measures? It was quite a chore getting the few inches of bottom paint off in the area of the waterline. I used several coats of stripper and still had to do allot of sanding. I would appreciate any suggestions, particularly "how to" reference material.
> 
> Thanks
> 
> Roger 148
> 
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