[Rhodes22-list] Barrier Coat, Reply to Hank

[Hank]

Thanks, Ed.  I appreciate the input.

The $400 estimate was based upon 3 gallons of interlux from west marine at
~100/gl.  That's how much is needed to get 5 coats and a 10mil thickness as
they recommend.  Of course, this is their recommendation on bare fiberglass,
not on top of Gelcoat.  I could probably get away with less on Gelcoat.  I
have since looked at a Pettit product from defender for 60 a gal, that gets
to 12mil in 3 coats at 60/gl.  2 gals is sufficient with this.

Now I'll research what you sent and figure out what to do.

Thanks,

Hank


On 5/25/07, Tootle <ekroposki at charter.net> wrote:
>
>
>
> Hank,
>
> It will help you if separate your question into parts.
>
> Gel Coat was devised and originally thought to be water proofing for
> fiberglass (FRP).  We now know that Gel Coat is not impervious to water
> penetration just adds a degree of repellency.
>
> Barrier coats add additional layers of water repellency.  Most barrier
> coats
> are of epoxy.  There may be an epoxy coating specifically to add a barrier
> and then a coating of epoxy primer or just layers of epoxy primers to be
> called a barrier coat.
>
> One gallon of epoxy of either type will coat a Rhodes 22, centerboard and
> rudder at least twice if applied by roller.  Some prefer the single
> thicker
> coat applied by brush.  I suggest multiple thin coats to ensure that all
> the
> surface gets at least one coat.  Also a roller coating can be accomplished
> in less than one hour.
>
> If you do it yourself, I question the $400 estimate, but it might total
> that.  I guess if you buy the top dollar product from the top dollar
> seller
> that may be correct.  However, good products can be obtained from smaller
> suppliers.
>
> For a thin epoxy coating to add water penetration resistance look at thin
> epoxy available from this source.  Using this web site is a challenge, but
> their products work well.  Look for ESP 155 as a sealing coating prior to
> priming:
>
> http://www.epoxyproducts.com/1_marineresins.html
>
> A good source of priming epoxy is:
>
> http://www.bluewatermarinepaint.com/
>
> And an interesting source of bottom paint is:
>
> http://supershipbottom.com/
>
> Thoughts for your consideration.
>
> Ed K
> Greenville, SC, USA
> Addendum (This will get thru your filters):
> http://www.nabble.com/file/p10807145/gas%2B5.bmp gas+5.bmp
> --
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>
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