Project type: Clean grout, Seal grout. Location to be cleaned: Kitchen, Bathroom, Hallway, Outside patio, Entranceway. What needs to be cleaned: Wall, Floor, Backsplash, Tub / Shower enclosure, Countertop. Approximate square footage of area to clean: I'm not sure. Tile type: Ceramic tile, Natural stone tile (granite, slate, etc.), Glass tile, As recommended by professional.