leaking - tiled shower stall
My shower stall is ceramic tile and it has an odd leak. The walls and floor are tiled. There is a closet on the other side of one wall. It does not leak in the closet; however, the rug where the bedroom meets the bathroom door gets wet so essentially there is a leak that runs out from the corner of the shower to the saddle of the door. The bathroom floor does not get wet at all and the wall and corner of the shower where the leak should be does not get wet. When I look at the base of the shower where the tile meet I do see some seems where it seems like the tile installer missed so there is no grout. About 1 year ago I caulked the seam where the wall meets the tile and in the corner and the leak stopped but now it is back. Does anyone have any ideas what is wrong? If so, how do I fix it permanently? thanks
One thing it is important to know is tile and grout are not waterproof.
In a properly built tiled shower the shower should be totally waterproof with 100% of the water heading down the drain before the first tile is set.
Although there are other methods, this is generally how pans are built;
If the liner compromised or omitted there is no easy fix.
Without knowing where the leak is originating, and how the shower was built there is no way for anyone here to give you a definitive answer to your question.
If the closet is on the same wall as the plumbing, it might be a good idea to open up the closet wall and put in an access panel. Run the shower, and see if your problem is the plumbing rather than the pan.
It's not a bad idea to have an access there anyway.
The contractor removed the pan and replaced it with a base made of, what I assumed, to be concrete. He used wonderboard on the walls.
You need to do some research---plumbing leaks are the most common cause--so open the wall behind the mixer valve as Blonsense suggested or remove the valce cover plate and check there--
Next would be a door or curtain leak---
Most dreaded and expensive to fix--the pan---
Buy an inflatable test plug--you need to block the pipe about 3 inches below the tile--
Fill the pan with water up to the top of the curb---check the water level in 12 hours (and look for water by your door.)
If the pan leaks--you have little choice but to replace the pan--and the walls==
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