I have not heard of any problems with temperature changes with cultured onyx materials. I also doubt that water from a shower can cause much of a temperature change. I would install and enjoy. Terry

: I have purchased a cultured onyx shower stall reject. (custom purchaser didn't like final color). I will install unit and plumbing. I am aware these type materials don't like sudden changes in temperature. I'm concerned with this constraint, at times, may be ignored (hard to break old habits). Is there a way the new plumbing can help? One simply idea would be to restrict hot/cold fixture controls from sudden movement. Other ideas?