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Old 15-08-2011, 14:17   #1
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Stainless Water Tanks - Glassing with Epoxy ?

On cleaning my water tanks of what appears to be tea-staining of the stainless I noticed some pitting where the tank had been supported by
a rubber pad. Blasted it with with garnet and pinholes appeared!
I am contemplating T.I.G.ing up the pinholes ang glassing the tank with
epoxy& 1 layer of 6oz. I would use hi-elongation epoxy and dynol. Anybody done this? I realise I am cutting off the O2 supply to the stainless, but it is definitely cheaper than having a new tank made.
Cheers.
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Old 15-08-2011, 14:22   #2
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Re: Stainless watertanks---glassing with epoxy??

Questions you might want to ask yourself; is cheaper better in this case, is it almost as good, or is it far inferior to doing a proper job?
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Old 15-08-2011, 14:29   #3
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Re: Stainless watertanks---glassing with epoxy??

Damn! Why can I never bend the truth?
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Old 15-08-2011, 14:50   #4
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Re: Stainless watertanks---glassing with epoxy??

PL premium polyurethane construction adhesive would be a quick easy simple long lasting fix. Just trowel it on, fill the pin holes. If you want you can embed glass fabric. it will be 100% waterproof durable fix. this adhesive expands as it sets and is moisture cured. it is also gasoline proof.
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Old 15-08-2011, 15:04   #5
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Re: Stainless watertanks---glassing with epoxy??

Is it safe for potable use?
Quote:
PL premium polyurethane construction adhesive
Edit: from loctite web site.

Quote:
Not Recommended For

* Water submersion applications
I would think using it on a potable water tank application would rate as "water submersible" application. I wonder what nice chemicals it would add to the drinking water?

http://www.loctiteproducts.com/msds/PL_CA_PREM_msds.pdf
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Old 15-08-2011, 15:42   #6
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Re: Stainless watertanks---glassing with epoxy??

works under water, never had any trouble with it. caulked an entire wood boat using this.
does not seem to have any odor or taste. seems inert after cure.
I have repaired copper pipes by squeezing the crack shut, saturate glass cloth wrap around the pipe.

Personally I would have no problem sealing any tank except hdpe tank. I sealed up a waste holding tank. Made it with plywood. smeared it all over the inside using notched trowel followed by a smooth trowel.

alternatively look at DIY Wet Basement Waterproofing, Finishing & Flooring, Swimming Pool, Deck & Concrete Crack Repair, Roof & Industrial Floor Coating
advertised as potable and food safe coating. I have used sanitred permaflex extensively and it lives up to its claims
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Old 15-08-2011, 15:50   #7
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Re: Stainless watertanks---glassing with epoxy??

works under water, never had any trouble with it. caulked an entire wood boat using this.
does not seem to have any odor or taste. seems inert after cure.
I have repaired copper pipes by squeezing the crack shut, saturate glass cloth wrap around the pipe.

Personally I would have no problem sealing any tank except hdpe tank. I sealed up a waste holding tank. Made it with plywood. smeared it all over the inside using notched trowel followed by a smooth trowel.

alternatively look at DIY Wet Basement Waterproofing, Finishing & Flooring, Swimming Pool, Deck & Concrete Crack Repair, Roof & Industrial Floor Coating
advertised as potable and food safe coating. I have used sanitred permaflex extensively and it lives up to its claims
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Old 15-08-2011, 15:56   #8
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Re: Stainless watertanks---glassing with epoxy??

JB weld epoxy for stainless lasted as long as I owned my last boat, just saying
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