The floor drains in older homes were piped in almost all cases with a simple p trap just like you might find under your bathroom sink.
How to install p trap in concrete floor.
This means that if the floor drain is 4 feet away from the shower drain the end of the pipe where it meets the floor drain must be 1 inch lower than where the pipe connects to the p trap.
If you want to install a shower over a concrete floor a fiberglass shower stall will work just fine.
Since you can t lower the floor you must adjust the height of the p.
Ideally you ll already have a drain roughed in with the pipe sticking a few inches above the floor.
The u shaped pipe under the drain created a water seal but.
Our prior videos showed how to prep and self level the concrete floor which made this instal.