I recently bought a non-inflatable, steel frame above ground pool (12 ft diameter, 3 ft depth). I want to set it up on a slab of concrete, but I have a couple of concerns about the wear on the bottom liner of my pool:
- Joints in my concrete may stretch the liner to fill the joints (under water pressure)
- Roughness of my concrete may scratch the liner
Are these valid concerns? If so, what type of underlayment should I use? I'm considering 1/2" thick foam insulation, but I'm not sure if that minds getting wet or not. Also, I'm not sure if I can put the legs of my pool on top of it without the legs tearing through over time.