Are ProTile™ shower niches compatible with ½” cementitious and foam based backerboards?

Yes, ProTile™ niches are made from ½” ProTile™ building panels and can be easily mounted on any ½” backerboard shower system installed on 16 o.c. studs without any additional framing. ProTile™ shower niches are 100% waterproof and make a functional and attractive addition to any shower.