[Public-List] Barrier Coats and Blisters

[George Dinwiddie]

Jeffrey,

After two or three years, the hull should be pretty dry.  It's not 
likely to do anything radical, barrier coat or no.  I'd leave it the way 
it is.

  - George

Jeffrey wrote:
> Hi Everyone,
> 
> I bought the boat 16 months ago, and will be putting it in the water for the
> first time in two or three years. I've begun the process of removing VC17
> bottom paint so I can apply something suitable for salt water.  Under the
> VC17 I'm seeing what looks to be a gray barrier coat, and lots of little
> blisters, all less than 1/4 inch. The blisters are not wet or pop-able. I
> can't tell if the are old, older than the barrier coat or came after the
> barrier coat.
> 
> Anyway, I need to decide what to do.  From all my reading on the subject,
> barrier coats are the way to go, based on common consensus. A couple weeks
> ago my plan was to strip off the paint to gelcoat, and add an epoxy barrier
> coat before repainting. Since then I've found these small blisters, and what
> appears to be a previously applied barrier coat. I went and read every
> single email in our mailing list email archives with anything to do with
> blisters and barrier coats. It would seem A30s don't like barrier coats.
> Many posts of people adding barrier coats only to get blisters shortly
> afterwards. Many in the list who don't have barrier coats - have no
> blisters.
> 
> Some of the emails I had read in the archive were fairly old, and I'm
> wondering if the opinion is any different today. Are there any folks out
> there that had blister problems with bare gelcoat, then added an epoxy
> barrier coat and it solved the problem? Do I...
> 
> 
>    1. strip the barrier coat and repaint (perhaps fill some of the little
>    craters first),
>    2. strip barrier coat and add new 2009 technology barrier coat,
>    3. leave the present barrier coat and repaint.
> 
> 
> If anyone is interested, I've got a photo of the blistered hull here:
> http://picasaweb.google.com/lh/photo/7yBDtHzbaYagcz09224_WQ?feat=directlink
> 


-- 
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   When I remember bygone days                         George Dinwiddie
   I think how evening follows morn;            gdinwiddie at alberg30.org
   So many I loved were not yet dead,           http://www.Alberg30.org
   So many I love were not yet born.
                'The Middle' by Ogden Nash
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