Brandon in VA
New Member
I am ready to install a Kohler acrylic bathtub into an alcove in the basement. I have read a lot of advice about using mortar piles to help with the leveling of the tub, which I plan to do. My main question is should I use plastic sheeting below and on top of the piles? I have read advice for using plastic under mortar when installing on top of a wood subfloor, and for using plastic on top of the piles to help ease of removal if necessary, but wasn't able to find any discussion specifically related to slab installations. I assume there would be no harm in having the plastic under and on top of the piles in my situation, but wanted a second opinion before I moved forward. In case it's relevant, the tub has 3 rails running the length of the tub about 3/4" deep that could be used as the base for an adhesive installation, but they are way off level from one another so I didn't like that as an option. Thanks in advance for your help.