From [ Ссылка ] - In this video Steve talks about floor options for vinyl liner swimming pools: sand, grout (mortar) and vermiculite (as described as a two stage bottom). This list is not inclusive. Some builders use a two stage process but it is grout over concrete, with no vermiculite at all. However this list does help the average pool owner to better understand the flooring options available in most areas.

#swimmingpoolsteve #vinylpool

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