Hi there, the finish tile is installed as one normally would over wood frame construction. The height can be whatever you're comfortable with. Good luck with your project! Jeff Jeannette, jeannette architects

Thank you for your quick response! I was referring to the structure underneath the tile in these "half" walls. I'm worried about losing integrity... Mine would be aprox 4 feet wide and 60" tall with no columns going to the ceiling. Not sure if I'm explaining myself well :-/

Yes, the structure is wood. Fully waterproofed and secured firmly through to the floor system. If you wish to beef up the strength of the walls, a steel post can be installed at the ends not connected to the room walls. Hope that helps!

what type of tile is that in the bathroom shower stall? I want to use the exact same in mine.