Care and Maintenance IN ORDER TO PROPERLY MAINTAIN THE SURFACES OF YOUR NEW VANITY, REVIEW THE FOLLOWING PROCEDURES AND INSTRUCTIONS: a — SET i Frey MARBLE . The marble stone vanity top is polished smooth and has an initial protective sealant applied. It is important to reseal your marble at least once every 2-3 years. Before applying the sealant, all areas need to be clean and dry. A high quality stone sealant will be available at your local hardware store.