Hi Colette,

Thanks for your question! This tile has a break strength of 250 lbs., which refers to the amount of pressure it can withstand on a single pressure point (not including the substrate it is installed on or the thinset used to install). That means, it should be able to withstand the weight of a claw-foot tub. We would recommend contacting a contractor so they can make sure your subfloor and joists are structurally sound before installation because the combined weight of bathtub, water, and presumably person can add up.