my upstairs tile shower is leaking in 3 areas through the drywall onto my kitchen table. All three of those areas on the shower threshold.
at the base of the threshold where it meets the wall outside of the shower. (the shower door isn't sealed properly and it trickles between the wall and the door onto a crack in the grout)
inside the shower and inside the shower door, where the tile going up the threshold meets the tile on top of the threshold. There's a crack in the grout.
same place just a bit over.
Can someone help me understand how the water can splash inside the shower, on the inner side of the threshold and leak below if I have a shower pan membrane there? I know there isn't a membrane on the outer side of the shower threshold, but isn't there one inside?