Remodeling tips
Regrouting Tile
Preparing the Tile

Step1 Choose a grout color. If you are regrouting an entire bathroom, choose a color that matches the tile. For small jobs, match the grout color with the existing grout.
Step2 Scrub the tiles and grout with a household cleaning solution.
Step3 Saw along the grout lines with a grout saw or small knife that cuts into narrow spaces.
Step4 Remove the remaining grout with a chisel or utility knife.
Step5 Vacuum out the leftover chunks or debris from the spaces around the tile. If any of the tiles need to be replaced, replace them now.
Step6 Clean the tile. Remove soap scum and dirt. Any household cleaner designed to remove soap scum is perfect for the job.

Apply the Grout

Step1 Mix the grout. Grout is sold pre-mixed or dry. If you need to mix the grout, read the directions on the package and follow the instructions. Latex-modified grout is more water resistant and does not crack over time.
Step2 Spread the grout over the tile and smooth it out with a grout float. Angle the top of the float to 30 degrees.
Step3 Use the float to press the grout into the empty spaces between the tiles. When the grout becomes hard to push down, the spaces are full.
Step4 Run the float across the top of the tiles to remove excess grout.
Step5 Wait five to ten minutes. Wet a sponge with water and wipe over the top of the tiles to clean any leftover grout.
Step6 Cure the grout for at least three days.
Step7 Seal the grout with a grout sealer. This keeps water and mildew out of the grout. If using ceramic tiles, use a silicone or water-based grout sealer. Brush it along the joints between the tiles. Wipe excess sealant off the surface of the tiles. If you have porous tiles, use an acrylic top-coat and seal the entire surface of the tile.