Re: 2" styrofoam below sand?
Hi Dena, The easiest way? A couple of layers of black plastic and lots of sand.
Everything else gets more complicated. 2" styrafoam is nice but do not put sand over it. There are many reasons but it is just not a good idea. When the walls are up and the base as smooth as possible lots of time and duct tape can be used to install the foam. A lot more time and duct tape to install the pool cove. At this point the cove is optional since you already have the bottom rails and any sharp edges well covered.
The foam does provide a very nice base for the liner. Nice and easy on the feet.
Later, Dennis
AG pool installer
Arizona
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