Insulation under electric water heater

[RustyKnuckles]

I just bought a Rheem Ruud EGSP20 electric water heater for the home I'm building for myself. I'm retired with no expectations of having any more kids. I bought the 20 gallon electric, because it was one of the few I could fit into my crawl space. There is just no room in the house itself to install a water heater. This water heater has no feet. I poured a 24"X24" concrete pad 4 inches thick for the water heater to sit on. I would like to put something on top the pad for insulation to keep the concrete pad from sucking heat out of the water heater. What can I use for insulation that will support the weight of heater and 20 gallons of water?

 

[Fitter30]

Styrofoam or another type of foam insulation if worried about support can cut some pvc pipe rings to set it on.

 

[Sponsor]

 

[Reach4]

EPS and XPS have better compressive strength than most insulation. They are also moisture proof.

But taking the weight off with some PVC pipe sections or other method does sound like a great idea.

https://www.google.com/search?q=insulation+compression+chart+xps+eps+square

 

[RustyKnuckles]

Ok! Thanks guys.