Bathroom Countertops are necessary flat workspaces for any bathroom vanity or surface for extra storage cabinets. From brushing your teeth to washing your hands with soap and water, bathroom countertops are essential for all building owners. While many people do install granite or marble countertops in bathrooms, it is recommended to use a nonporous countertop material like quartz. Using quartz countertops will ensure that the constant water (and anything else associated) will not seep through with the constant contact with bathroom countertops.