I want to construct a large water tank. The walls need to be

  • fairly thick (several centimetres)
  • very stiff (they will be decoratively plastered inside and out and the plaster should not crack)
  • lightweight (on the order of 2m x 2m sections to be arranged by hand)
  • effective insulators (the water is hot)
  • inexpensive
  • ideally, environmentally friendly

What should I use?

  • 1
    How large is "large"? Jun 1 '19 at 13:42
  • 1
    You forgot “strong” too.
    – Lee Sam
    Jun 1 '19 at 14:37
  • why would you plaster the inside of a water tank?
    – jsotola
    Jun 1 '19 at 16:12
  • @ThreePhaseEel 2m sides, as the question said.
    – spraff
    Jun 6 '19 at 11:29
  • @LeeSam To support a mass of water in a 2m box, as the question said.
    – spraff
    Jun 6 '19 at 11:29

Get a stainless steel tank and then bond / glue good insulation to the outside surface.

Then cover the insulation with a suitable covering to paint as necessary.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.