We could have had it installed on a small scale without an additional charge. It apparently wasn’t planned that way (also regarding the energy bill). The plumbing company, however, advised us against it because we have the drain in the middle. He said he could lay something there, but not much.
We have now decided against it. Since I don’t really like tiled showers anyway, I will use the alternate one, which is also not heated from below [emoji16]. And there isn’t much cold coming from below anyway, since there is a heated basement here.
But since the room is quite small and has little underfloor heating, an electric heater will be added. We can then use it for towels. We could have also installed a normal one, but we wouldn’t really turn it on much anyway.