How to Repair a Cracked Tile

Small cracks can be filled with tile filler or epoxy, while severely damaged tiles need complete replacement by chiseling out the old tile and installing a new one.

1. Know When to Repair or Replace. Examine the crack closely to determine if it goes through the entire tile or just the surface glaze. Tap around the tile gently - a hollow sound indicates the tile has separated from the substrate and needs replacement. Surface cracks that don't go all the way through can usually be repaired without replacement.
2. Clear the Crack Completely. Remove any loose debris from the crack using a utility knife or small chisel. Clean the area thoroughly with degreasing cleaner and let it dry completely. For grout line damage, scrape out any loose grout material as well.
3. Fill Hairline Cracks Fast. For hairline cracks, squeeze tile filler or color-matched epoxy into the crack using steady pressure. Work the filler in with a putty knife, ensuring it penetrates completely. Remove excess filler immediately and smooth the surface level with the surrounding tile.
4. Chisel Out the Damage. For major cracks or loose tiles, use a hammer and chisel to carefully break out the damaged tile, starting from the center and working outward. Wear safety glasses and work slowly to avoid damaging surrounding tiles. Clean all old adhesive from the substrate with a putty knife.
5. Set New Tile Level. Apply tile adhesive to the cleaned substrate with a notched trowel, creating even ridges. Press the new tile firmly into place, twisting slightly to ensure good contact. Use tile spacers to maintain consistent gaps and check that the tile sits level with surrounding tiles.
6. Grout and Seal the Seams. Wait 24 hours for adhesive to cure, then apply grout diagonally across joints using a rubber float. Remove excess grout with a damp sponge, working diagonally to avoid pulling grout from joints. Apply grout sealer after grout has cured for 48-72 hours.