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Swimming Steel Wall Pool. Disclaimer: This Installation Booklet is to be used ONLY as a basic guide and. information on the installation of an inground steel wall vinyl liner swimming pool. There are multiple construction methods and techniques that can be used in the. construction of an inground swimming pool. In addition, the construction of an.
eric136September 3, 2008. I'm in the process of designing my inground vinyl pool and just checked-out a friend's vinyl pool. Instead of using vermiculite for the base, he used 2 blue foam insulation board. It's definitely a softer bottom (real similar to a sand bottom) and you can feel the uneveness of the dirt below it.