Rain head shower at 7'6", I'm 6'2". Designing glass wall that slopes from 7'6" (after 40" from side wall) down to 5'. Rain head is about 30" from back wall, 20" from glass wall) so at about 10" from the rain head, glass wall begins to slope. Contractor thinks the rain head will splash over the lower part of the sloped wall onto bathroom floor. From what I've read, that shouldn't happen. He wants the wall straight across the 66" length at height of 7'6". We like the slope (as glass is going to be decorative, not simply clear). Any thoughts on rain head splash zone? How high should a shower wall be with rain head?