Grouting tile may be messy, but it's easy to master! Mix up your grout and press it between the tiles using a float. After about 15-30 minutes, wipe off any excess with water and a sponge. Three hours later repeat the process, ensuring there isn’t extra grout on the tile or outside of the tile line. Finally, once everything has dried overnight, use a dry towel to rub off any haze and sweep clean.