The moisture is probably the result of.
Water seeping through tile floor.
There s no visible leakage from sink or toilet toilet sits about 18 inches away.
Leaking drainpipes in a shower or a bathroom plug will let water underneath tile.
If the grout becomes damaged on the floor it will give water a chance to slip through the gaps and under.
The best way to tell if.
Dry out your home the first step in drying out your home is to make sure the humidity in the room is not too high the temperature is low and the air is circulating.
In old bathroom likely 30 years since remodel water seeping up in the middle of the tiled floor.
Clogged weeping drain tile depending on the age of the home and other factors weeping tile can become clogged and non functional.
When these all too common mistakes occur standing water gets trapped in the shower pan below the tile level.
If the water is seeping up through the floor it could be a result of insufficiently sealed foundations or there could be cracks in the foundation floor.
This situation will cause the water table to rise sometimes to the point that water comes up through the basement floor and the basement floods.
The shower floor tile and grout will appear to dry in 24 hours but if your shower was improperly constructed the 1 5 inches or more of deck mud under the shower floor tile will never dry.
Go into the crawlspace under the floor and look for signs of moisture on the joists.
What are the causes of water under a tile floor.
Water could be running along the pipe out of the cabinet through the oversize hole that s cut in the back wall or floor landing on the tile floor under the cabinet and then running out under the toe kick.
Literally when pressing down upon tile moisture comes up through the grout.