I think those large tiles are acting much like the plastic sheet in your moisture test but the grout lines are the only available areas for drying which means the water is going to remain trapped under that flooring much of the time and keep the grout lines wet and darkened.
Water under tile floor in bathroom.
What are the causes of water under a tile floor.
Addressing the phenomenon of tented water damaged tile cleanfax.
If you find hollows and valleys you must fill them with a self leveling underlayment.
Fill seams in the subfloor with caulk.
The water can even cause the glue on the tiles to be destroyed.
If the grout becomes damaged on the floor it will give water a chance to slip through the gaps and under.
Leaking drainpipes in a shower or a bathroom plug will let water underneath tile.
Water damage to tile flooring how it of water damage in the bathroom broken tiles and sinking tile floor due water damage to tile flooring how it bathroom tiles water damage al water damage in the bathroom.
The walls and baseboards are dry and the caulk from the baseboard to the tile shows no leaks or holes.
Here s my best guess mw.
Go into the crawlspace under the floor and look for signs of moisture on the joists.
The moisture is probably the result of.
No water leaks from all the showers toilet and sink again.
However no signs of water seeping through the caulking from the base of the shower pan and tile and the toilet and tile.
Additionally depending on how long the water has been on the floor it can cause severe water damage mold and mildew growth destroy your drywall and cause wood to warp.
A successful tile installation project requires a level surface.
They may be mold blackened and you may even see water dripping.
The best way to tell if.
Locate the source of the leak and perform the necessary repairs.
The dry product is mixed with water to a liquid consistency and poured on.
Check for dips in the floor by sliding a 4 foot to 6 foot straight edge in different directions all around the room.
Water damage under tile floor.
So it has to be coming up from the bottom of the tile.
Water may be seeping through the surface of the tile in which case you don t have to do any plumbing repairs but if the leak is in a wall chances are it s from a supply line.