Check the ceramic tile walls surrounding your tub or shower.
Water leaking through tile grout.
What are the causes of water under a tile floor.
There should be proper flashing the membrane should be sloped to a drain that has weep holes to allow the water through.
Maybe a plumbing leak or maybe the drain is restricted in the shower and water is not allowed to fully drain away.
Leakages in the shower are most often the result of grout failure.
The shower water leak should be repaired quickly otherwise the buildup of stagnant water will lead to mold and damp under the tiles.
If it is leaking then it isn t fully waterproof.
If water is oozing up through the grout joints and it is becoming moldy then water is not able to drain away.
Leaking drainpipes in a shower or a bathroom plug will let water underneath tile.
The best way to tell if.
The grout joints are porous so water can go through the grout and under the tile.
Leaky tiles can be found anywhere where there is water.
It appears you have some sort of leak.
This tile needs periodic maintenance.
Cracks can develop in the grout between the tiles allowing moisture to seep through.