I wanted to install a mosaic backsplash in my kitchen. But, I am afraid that dirt will build up in between the tiles. How can I make sure that this is not an issue? Is there any treatment to ensure that ...AnswerYou didn’t say whether your mosaic is natural stone, stone and glass, just glass, ceramic or porcelain. Regardless, you may want to grout your tiles to fill in the cracks between them. Use un-sanded ...