After building above ground pools for many years, I don’t get many callbacks on my bottoms. Some above grounds are made with bottoms of foam sheeting, happy bottoms (which are thin sheets of hard plastic), vermiculite, pearlite, or concrete. The vast majority of them use only the earth of the yard and maybe some sand for the bottom and that’s usually perfectly OK. An experienced installer can make a nice smooth bottom using just the earth that is there. We usually use only the earth for the pool bottom due to the extra cost of the materials mentioned above. An above ground swimming pool is, after all, a much less expensive alternative to in-grounds. So, for most, keeping the cost down is important.
There are a few drawbacks to having only an earth bottom and one of the drawbacks is horned nosed beetles. I started this blog post saying that I don’t get many callbacks on my bottoms, but I did get three this season because of something sharp poking up from under the liner. Out of the three calls, one was because of a horned nosed beetle. Let me tell you about them. (more…)