Cultured marble bathtub refinishing can be done on any type of cultured marble tubs. We can also resurface your cultured marble showers and vanity tops. We offer solid colors as well as multispec faux granite finishes. Common problems with cultured marble bathtubs, showers and vanity tops are cracks, sometimes small and sometimes very large. These cracks are called thermal cracks, they come from temperature changes. For example: You turn on the hot water to let it warm up, come back a few minutes later and turn up the cold water to even it out to your liking. This causes a very quick change in temperature. Cultured marble does not expand and contract during temperature changes