I selected travertine tile at the Design Center with 1/16 or credit card width grouting. They put it in with 1/2 inch plus grouting. It is Mapei Ultracolorplus #39. Ivory. They won’t change it and said it did not need a sealer. Mapei stated in their literature that all light Grout colors should be sealed in especiall traffic patterns, this installed in kitch, halls, living roo, etc Can I get them to remove flooring and do it right.