Insist on waterproofing membranes on bathe and bath surrounds, plus real sloping and weep holes

https://telegra.ph/How-to-Make-a-Small-Bathroom-Feel-Larger-in-Ahwatukee-04-18

Insist on waterproofing membranes on bathe and bath surrounds, plus acceptable sloping and weep holes, to stay away from leaks and highly-priced repairs years later.