When using natural stone for copings, cladding, and surrounding areas of indoor swimming pools, one of the most important factors to consider is safety. The stone surface must therefore be anti-slip and easy to maintain. However, not all natural stones are suitable for this purpose; they must be selected according to their physico-mechanical properties, porosity, and absorption capacity. Installation must also take into account the type of stone, which should be treated with specific waterproofing products to protect it against chlorine or salt.