Installation of electrical empty conduits in the floor slab - experiences

Hello everyone,

we are planning a house without a basement. I would like to lay some vibration-resistant empty conduits (DN25) in the floor slab to supply roller shutters, sockets, LAN, Sat, etc. on the ground floor and thus relieve the installation zone on the raw floor.

However, I am currently wondering: if I have about 5 empty conduits per room on the ground floor sticking out, it is quite cumbersome for the person who eventually rolls out the vapor barrier on the raw floor (S200) because a suitable hole for each empty conduit must be cut out of the vapor barrier and then sealed again accordingly.

Does anyone have practical experience with this type of installation?

Thank you very much

What exactly do you want to relieve there? Whether 1 cable harness or 1+n cable harnesses lie on the raw floor is totally irrelevant...there will be underfloor heating everywhere on top later.

Have you spoken to the executing companies about this?

The house connections also penetrate the vapor barrier at several points. So I don't really see a problem there.

But since you want to do it yourself, creating extra work for the executing trade, I am rather of the opinion that you would also have to ensure the tightness yourself.

For the few cables, the additional effort (empty conduit, pull wire!, installation + sealing in all levels) does not make sense. You are not only "hindering" the S200, but also the floor insulation.