3 Causes of Tile Grouting Problems

Many homeowners want to save money and lay floor tiles themselves but, if not done properly, the tile grouting can present a number of problems after installation. Attention to detail is key – from keeping the underlayment even, to the subfloor remaining firmly in place, to using the correct method when applying the grouting – to getting the best results. Here are some common causes of grouting problems and how to prevent them.

Irregular Coloring

Grout coloring should remain consistent throughout. If you notice any color variations, it likely because:

  • While mixing the grout, you added in partial amounts of the bag each time instead of mixing the entire bag as one mixture. Varying grout mixtures will result in different shades forming.
  • If you mixed varying amount of water during mixing, the color will appear lighter where more water has been used.
  • If the sponge you used to mix the grouting was dirty or the water was dirty before mixing, it could lead to irregular coloring of the grout mixture.


Cracking can appear in your grouting for a few reasons:

  • If the substrate under the tiles is loose, it will shift underneath the tiles causing cracks in the grouting and possibly the tiles themselves.
  • If the grouting isn’t packed into the tile gaps correctly, air bubbles will appear under the grout causing it to crack and break.
  • If too much water is mixed with the grout before application or the grout is left out too long before use, cracks could appear.


Stains can appear in your grouting if it’s not properly sealed after installation. Grout will absorb moisture if not sealed after drying, so after it has dried you need to clean the tiles and remove excess grouting before applying grout sealant. This sealant should be applied annually to prevent stains from appearing.

If you have any questions about tile floors or grouting, call Jabara’s today to speak with one of our flooring experts.