On Sep 7, 7:19�am, Nate Nagel wrote:
wrote:
Hello,

I have a design made out of cardboard that I will be keeping outside
in the elements. �I need it to be able to hold rain water inside it,
so I'm wondering if there is any way to water proof it? �Here are some
ideas:

1) �What If I painted it with an oil based paint?
2) �How about using epoxy glue and covering the entire inside?
3) �What about coating the inside with Portland Cement?
4) �I could coat the inside with tin foil, then use epoxy on the
joints?

Is there a much better idea than these?

Thanks

It's not possible to waterproof cardboard. �I would buy some thin
sheetmetal (flashing?) and use your cardboard design as a pattern to cut
the metal.

nate- Hide quoted text -

- Show quoted text -

buy PVC tank, think used 55 gallon drums.