Will Hollow Tiles Break?
On the Other Hand, You May Find That a Bonded Mortar Bed Has Debonded from the Slab, for One Reason or Another, Causing the Hollow Sound, but That Condition...
On the other hand, you may find that a bonded mortar bed has debonded from the slab, for one reason or another, causing the hollow sound, but that condition will not cause any resultant problems in terms of the long term performance of the tiled floor. Voids under tile can weaken the tile and cause breaking.
Will a hollow tile crack?
In some cases hollow sounding tiles are not likely to result in any problems. ... Tiles with voids under them are more problematic in commercial applications where the tile could be subjected to heavy traffic and heavy point loads, which could result in the tile crushing or cracking in those spots.
Should hollow tiles be replaced?
ANSWER - Hollow sounding tile is not a defect per industry standards. Although a hollow sounding tile can be a symptom of a defect. ... If there is no resultant damages to the tile or grout, then I would just let it go. Make sure you have extra tile for the future just in case they do get damaged you can replace them.