My kitchen tile flooring was subject to water infusion when it was submerged in several inches of water for six hours, due to a leak in our plumbing. Now the 2' by 2' tile and mortared joints are cracking and lifting. It is possible that the water damaged the integrity and adhesive hold or shrunk the thin set under the tile? Is the only solution to replace the whole tile floor? the installation is a first floor concrete slab construction with concrete thin set used to set and level the two foot square tiles and concrete mortared joints on 1/4 inch spacing. I have never had this problem before and the areas of the water infusion are where the problems are. The insurance company says there is no way that the water is the cause of this problem.

  • Jim do you have a picture? It does seem odd that a little water would have that quick of an effect on thinset/concrete duo.
    – DMoore
    Commented Feb 8, 2014 at 22:17
  • 2
    was it thinset or mastic? Commented Feb 9, 2014 at 7:53
  • This question appears to be off-topic because user hasn't provided enough info to answer it right.
    – DMoore
    Commented May 13, 2014 at 21:05

2 Answers 2


It could involve the thinset you used. Generally a latex modified thinset will give a stronger bond, especially in a high foot traffic are like the kitchen. If your thinset was not latex modified it's possible that the water degraded the integrity of the bond.


I had a tile floor that started lifting and cracking because the underlying floor flexed a lot over the main support beam. Once the grout cracked, and I ignored it for a while, the grout worked its way under the tiles and acted as levers to lift more and more of the tiles; and crack some. Ultimately, I had to clean up a 16 foot section, scrape up the original mastic, and replace everything. Fortunately, I had many spare tiles. When I regrouted, I used sanded caulk to help the tile system flex with the floor.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.