Yes, you can install this on a shower floor. This is the most popular use for this tile. It is recommended that the stone tiles be sealed with a quality impregnator before and after grouting. For use in and around water, a water repelling sealer is recommended to ensure longevity. A color enhancer may be applied to bring out the true color of the stone at any time after grouting. Do not use oil based sealers. It is strongly recommended that a waterproof membrane system be used in all wet areas.