Floor for double garage

All not bad ideas, so far my idea to pave the floor is getting more and more refined, the stones would have to be without chamfer so that it becomes a smooth floor, only I still have a few questions; can moisture rise from below? If yes, can that be prevented? Can such a floor possibly be insulated? Could an underfloor heating be installed underneath??

DIY solution? The questions rather raise the issue of whether someone knowledgeable should plan this.

Paving - and in the end as a smooth finish? Such clean, sharp-edged paving probably doesn't exist (or do you want marble paving?) - and then please consider the thermal behavior. Then take into account the load on the ground when determining the substructure - from insulation to reinforcement, layer thickness builds, etc. And then the heating issue can also be considered.

No worries, this will of course be planned by an architect. I just want to gather information beforehand in order to be able to make targeted suggestions/questions to the architect.

Take a look under Isolate Bodenbeschichtung, although it is in Bawü, maybe they can help you further.

Definitely make a pit, even if you are not a mechanic yourself. Your heirs will thank you!

I have already thought about it too, although everyone would then call me crazy