Toilet in the basement: Floor construction (temporary)

I want to install a toilet (+ sink) in the basement. I have a corner where the distance to a 100mm drain pipe is not far. Water pipes can be laid. Now, this should not be a residential toilet, purely a "worker's toilet" during the construction work in the house and also for later, to quickly take care of business in the basement (while gardening, etc.). This means I do not want to tile, pipes, etc. can remain visible. That is not an issue.

My idea would be to buy a cheap pre-wall system plus a toilet bowl from the hardware store.

The drain could be implemented; a SANIBROY system will not be needed. But, for that I have to install the toilet about 10-20cm higher, meaning placing it on a kind of pedestal so that the drain also works. That is exactly my problem. The top layer of the floor in the basement must be some kind of screed, underneath there will be brick (the rest of the basement is brick). The basement itself feels dry, but since it is an old building there is naturally some moisture. There is no mold.

Ok, so how could I build a pedestal? I can’t just lay wooden beams on the floor and then OSB boards on top. At least the beams would become damp and rot after some time. Since it is a niche, one could possibly attach supports to the walls and then build the step with OSB boards.

What ideas do you have?

... a Sanibroy system will not be needed.

Why not?

Rhine greetings

... because the process is accessible if the toilet were a bit higher.

But why all the fuss when it would be so easy with the Sanibroy?

Hello Hello

Is the connection then also backflow-proof?


Olli

I have also asked myself the "backflow question," there are several pipes that lead into and across the basement to an airlock, which then leads to the sewer. A backflow valve was not apparent to me so far, I need to ask the current owner about that.

On top of that, I have now discovered a drain in a corner that was apparently once used for toilet operations. Everything initially points to that. The drain is now covered. Whether it is properly sealed or only temporarily closed, I do not know at this point.

(The house has not been transferred yet, unfortunately, I cannot really get started.)