Wall cladding in the bathroom

After gutting our bathroom, the walls present a "horrible" picture. We are now considering which option is better or cheaper. The walls should be partially tiled and partially plastered. Either way, a smooth surface must be created.

Have the walls fully plastered or create a straight wall with panel materials. The picture might better show the initial situation.

The picture is a few days old. Meanwhile, the flush tank and the old drain pipes have also been removed. The plumbing company will start with the new pipes on Monday.

How would you proceed?

Basically had the same situation.
More or less solved the whole thing everywhere with drywall. Would I do it that way again?
hmm, anyway not with a wooden substructure, until you have created a level surface there...
Metal profiles are supposed to be better for that, if that's true I don't know. I've never worked with metal profiles.

Whether it's a problem if masonry is cavity drywall I also don't really know. It's probably done that way often and therefore probably not a problem.

Well, at the end of the day I would probably have it plastered next time (or plaster it myself). Seems more sensible to me because everything is connected frictionally.
Probably costs more because you can't really do it yourself but oh well...

Your roof insulation is overdue though

As mentioned, the photo is already 2 weeks old. Meanwhile, the insulation has been removed throughout the whole house and all water pipes have already been replaced. Tomorrow a plasterer will take a look at the whole thing. Let's wait and see how expensive it will be.

Building walls up to the roof slope is also not expensive and could even be done by oneself in non-critical areas, I think. Standard plasterboard panels can then be attached to the roof slopes (there are special ones for wet rooms). Of course, proper insulation + vapor barrier beforehand (a professional would be needed here; as I just learned in another thread, it is basically fatal if the vapor barrier layer is not 100% tight at the transitions). Then tiles / plaster everywhere. An 11.5 cm thick wall of sand-lime bricks or perforated bricks would be sufficient up to the roof slope.

Why brick up again, what is that supposed to be good for.

I would have it plastered. That way you won't lose any space and it will also be even.

Why block it off again, what is that supposed to be good for.

I would have it plastered. Then you won’t lose any space and it will be straight.

under the sloping roof I mean, to create a kind of knee wall
otherwise plaster and tile directly