I want to put a quadrant shaped stone resin shower tray in a first floor bathroom which has a one-inch boarded floor over nine-inch joists. I would like the tray to sit as low as possible on the floor, so I don't want to mount in on a platform. I know the tray has to be supported on a ply base with a sand & cement bed and I'm thinking that as most of the boards are missing from where the shower is to go, can I cut out the rest of the floor boards in the shape of the tray, then screw a half inch ply base on the joists with a half inch mortar bed on top, so the tray should end up at about the same height as if it was simply resting on the original floor?
The other problem is that as a joist runs directly beneath the trap opening in the tray can I get away with cutting about two inches out of the joist to take a very shallow trap? The floor span is only about eight feet.
The other problem is that as a joist runs directly beneath the trap opening in the tray can I get away with cutting about two inches out of the joist to take a very shallow trap? The floor span is only about eight feet.