The space between the bottom row of new tiles on one wall of my shower
and the existing floor tiles will be 1/4". Someone in an earlier post
stated that sanded grout is not good for wet areas.....Is this
correct??? I thought anytime the tile spacing was over 1/8" you were
supposed to use sanded grout, PERIOD.

Any professional or just experienced tile-setters care to weigh in on
this?