How do you grout mosaic tile art?

It’s important to wait at least 24 hours after gluing mosaic tiles before adding the grout (or follow the manufacturer’s suggestion for timing). Next, you’ll need to prepare the grout according to the instructions on the packaging, then apply by smearing it into the cracks between the mosaic tiles and scrape off excess grout with a plastic card. Allow the grout to set (usually 24 hours but follow the manufacturer’s instructions), then clean off excess grout using a cloth, warm water and dish soap. Full instructions on grout application can be found in the article above.