Oval install & owner horror stories true?

[Aranon]

In answer to where to get 2" Dow Chemical Blue Styrofoam:

Check roofing companies. Commercial Roofing suppliers have it and most will sell it over the counter with a credit card, especially if you tell them you will not be using it for roofs.

Also check with insulation companies. In Dallas it is going for about $22-$24 dollars a sheet. 1 1/2 is cheaper. Its made by Dow Corning or Dow Chemical and referred to as Blue Board. I doubt you will find it at Home Depot or lumber yards. This is Styrofoam not bead board or polystyrene.
Aranon

[NWMNMom]

TYTY! This place is a gold mine of great info and very nice people.

[matt4x4]

I used sand so I could create a deeper center - sand is easier to shape, the blue foam is good for a flat bottom. The center of my pool is sloped to 8" deeper than the edges, also makes cleanup easy - get in, walk a couple of circles to get the water moving, wait half an hour and all your dirt sets down in the middle part of the pool for a quick vac job.