How to Fix Cracks in Floor Tile Grout

Written by kimbry parker
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Tile grout may become cracked over time. Most of the cracks start out small but can quickly grow. This can lead to water seeping underneath the tile and cause the grout to crumble. In addition to the structural damage cracked grout can cause, it also reduces the overall neat appearance of the tile. By repairing cracked tile grout, you can prevent further damage and restore the appearance of the tile.

Skill level:
Moderately Easy

Things you need

  • Grout saw
  • Broom
  • Vacuum cleaner
  • Spray bottle filled with water
  • Paper towels
  • Bucket
  • Rubber grout float
  • Squeegee
  • Damp rag
  • Damp sponge
  • Dry towel

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  1. 1

    Remove the cracked grout using a grout saw. Do this carefully so as not to chip the surrounding tiles. Grout saws are inexpensive and can be purchased at home improvement centres. Brush the excess dust away with a broom and then vacuum the tile surface.

  2. 2

    Use a spray bottle filled with water to lightly dampen the damaged grout. Absorb any excess water with a paper towel.

  3. 3

    Mix a batch of grout in a bucket according to the instructions on the package. Be sure to purchase the same colour grout as the existing tile grout.

  4. 4

    Spread the grout into the joints using a rubber grout float. Hold the float at an angle and spread the grout across the surface. Work the grout into the joints completely. Use your finger to smooth the grout in the joints.

  5. 5

    Slide a squeegee over the surface to remove the excess grout, frequently wiping it clean with a damp rag. Let the grout set for about 30 minutes, or for the time recommended by the grout manufacturer.

  6. 6

    Clean the tile surface with a damp sponge to remove any grout residue. This will clean up the majority of the grout but there will still be a haze on the tile surface.

  7. 7

    Use a clean, dry towel to polish the tile surface and remove the haze.

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