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Chotu · 28-02-2021, 05:06

I see vinylester coatings being sold as potable water tank linings.

I know it’s touted for its resistance to water in continuous submersion.

Has anyone used vinylester to make potable water tanks?

I’m looking at a pretty weird shape. Very tall and narrow. Saddle tanks to go by the daggerboard trunks.

**tkeithlu** · 28-02-2021, 05:44

Think of vinylester as being between polyester and epoxy in its properties of strength, permeability, etc. It should do just fine for your tanks, given that both polyester and epoxy would, but epoxy won't for you. Good luck with the project.

Benz · 28-02-2021, 06:10

There is a vinylester resin specifically approved for potable water: I've built water tanks out of it.
It's called Dion Impact. Got it from Composites One. Had to add our own cobalt, and it's harder to bubble-pop (the bubbles seem to keep coming back, as though it's fermenting), but it's good stuff.
I'd be comfortable using normal vinylester, but this client needed the gov't-approved stuff.

Chotu · 02-03-2021, 02:01

Quote:

Originally Posted by Benz

There is a vinylester resin specifically approved for potable water: I've built water tanks out of it.
It's called Dion Impact. Got it from Composites One. Had to add our own cobalt, and it's harder to bubble-pop (the bubbles seem to keep coming back, as though it's fermenting), but it's good stuff.
I'd be comfortable using normal vinylester, but this client needed the gov't-approved stuff.

Cool! Thanks for the info, guys.

I was thinking how it might make an excellent water tank material if I can’t find a suitable polyethylene tank. Add carbon filtration like I normally do anyway and it should be quite safe.