Enlargement of the bathroom in the attic including the sloping ceilings

Is there a plan with exact measurements?

It would be very important... all dimensions clearly in ONE graphic, because basically I like this second layout better, but one would have to check exactly how it works with the toilet. It could fit because of the roof window... right now the sink is roughly in the newly planned toilet position.
[ATTACH alt="1700901529363.png"]83008[/ATTACH]

A floor heating system is not planned.

I will try to make a better drawing.

I know, one should keep this 2m line in mind. Selfishly speaking, since we are building the bathroom just for ourselves and hope that our daughter does not grow much taller either, 1.8m in height is enough for us.

You have a toilet with a downward outlet. Converting it is a real challenge.

If it were mine, I would build a new knee wall at the height of the windowsill. That immediately brings more calm to the room and hides the heating pipes at the same time. Then I would try to install the toilet pipe behind this drywall. The pipe would probably need to be routed around two corners. It’s best to ask the plumber if he can manage that with the necessary slope. I would extend the shower across the entire room width including the roof window. The sink should be placed next to the door with a continuous under-sink cabinet, which should then be approximately at the height of the windowsill.
[ATTACH alt="bad mit schräge.jpg"]83010[/ATTACH]
The effort would probably be quite high at first, because of the toilet. But if this is going to be my main bathroom, it would be worth it. However, if the plumber can’t manage the toilet, the plan is basically useless.

.. that seems to me like a pretty good plan. For the shower, one would have to consider how to solve the partition (I am, for example, a fan of inward-opening doors because then the moisture drips there) ... this is not so easy to realize here since the showerhead would have to be at the top of the plan, at the bottom of the plan there is the sloping roof with a window. Sliding door is also not possible.

For the shower, you would have to consider how to solve the partition...

Here I would probably choose a folding door. Something like this: [ATTACH alt="falttür.jpg"]83012[/ATTACH] The shower head on the wall opposite the door should then be straight.