hello, i'm in the process of framing a new bathroom, and installing a 3-piece acrylic tub and shower unit. the tub instructions say to create a mortar bed with quickrete for the tub to sit on. what else does the process involve? do i just frame out a box the width and length of the tub? how much mortar do i put in? do i need to do anything to strengthen the subfloor? thanks for any help

I am convering a 36"x36" 8' high shower to a steam/shower unit. I use Swanstone shower pan as the bottom. I plan to tile on three walls. Questions: 1) For the wall, which one is better for the back of tiles: 1/2" cement backer board or 1/2" HardyBacker? 2) I will close out ceiling a bit to make 7'6" high. I am looking for light but waterproof pre-finished material for steam room's ceiling. Would you recommand any pre-finished material? If I can not find good, affordable material for ceiling, I may use tile over backer board, do you think any trouble I use 8"x10" tiles which matches the one on the walls? Thank you very much for any input you provide. :)