If This can be the scenario we will then get rid of the ground again to the first substrate. Remove the bottom study course or two of wall tiles dependant upon sizing of tile. Sealants are faraway from wall junctions and wall grout if want be. We then use an http://shower-leaking-repairs94826.arwebo.com/9057707/the-smart-trick-of-shower-leaking-repairs-that-no-one-is-discussing