I am ready to start the installation of a tile shower on a concrete floor. Will this PVC pan (more like a thick sheet of rubber) really allow tile and grout to stick to it.
What must I do? Also because we are going where an old shower was, there is a floor drain cemented in, under is the old style heavy pip, circa 1960. How do I deal with this? Some of the reading I have done indicates that I need a specail drain and flange system. Thanks

You do need a special drain with the detachable flange. You lay your membrane overlaping your flange and then screw on the cover. The concrete base does not need to stick to the pan. The flange has weep holes so that water leaches though is channeled into the drain.