I get a lot of e-mails from people confused about grout. When they get to the tiling stage of their bathroom or kitchen renovation they get stuck. Or they've been living in a new home for a while and ...

Seal marble at install and reseal every 6–12 months or after harsh cleaning. Test with water—if it soaks in within 30 minutes, reseal. Protect marble by avoiding acids, abrasives, and wiping spills ...