On Thu, 12 Jul 2007 12:19:56 GMT, Paul Oman
wrote:


Ha! Maybe a chance to get me some free information here =;-}

If you were planning on building a composite potable water tank what
would you use to line/paint the inside?

I have had several boats that had integral tanks. In one case the tank
appeared to have been painted inside with polyester resin and a second
boat that appeared to have gel coat on the inside.

I am considering building a spare water tank out of plywood, lined and
taped with glass, and do not have a big selection of epoxy available
here. My thoughts were to go ahead and paint it inside with several
coats of epoxy, let it cure for several weeks and then flush it with
several/many changes of water.

If some form of special, "This stuff is for lining water tanks" resin
was available I'd use it but as far as I can discover there is
nothing like that available in the country.

Thanks for any information you can give me.





Bruce in Bangkok
(brucepaigeatgmaildotcom)



---------------

gel coat is just thickened polyester resin.

epoxies tested and approved for potable water (NSF 61 approvals) are
generally (always????) test /approved for tanks over 1000 gallons or
pipelines over 16 inches dia. Some folks don't worry about it, others
do......

paul
- progressive epoxy polymers

Thanks, I understand.


Bruce in Bangkok
(brucepaigeatgmaildotcom)

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