Experiences with brush-on or roll-on plaster

Hello,
our basement will be handed over to us with smooth concrete walls (except in the staircase, which will be completely wallpapered and covered with the same tiles as the ground floor).
Since we will be setting up our guest room in the basement, we have thought about designing the walls and ceilings in the rooms with a brush or roller plaster.
Has anyone had experience with this and can perhaps even give us a tip on which plaster we should use best?
Regards,
Dirk

Just the plaster alone - that probably won't look good as it won't cover unevenness. At least not with the decorative plaster that you apply with a paint roller; it's too thin for that. I would probably stick gypsum fiber boards with blobs and then treat them with such plaster after filling. With properly neat work, it will look clearly better, you can easily do it yourself, and it won't look like a makeshift solution afterwards.

Hello,

yes, just the plaster alone doesn't work - that's clear.

What would you recommend to us to get the joint edges of the individual concrete elements "smooth"?

Filling and sanding probably - what would be best to use as a filler?

Can the brush-on plaster also be used without problems for the ceiling? Or is it better to traditionally wallpaper and then paint?

Regards,

Dirk

So we only have plaster on the ceiling because wallpapering there would have been too annoying. Depending on how uneven the concrete is, filling can also become quite laborious. In the basement, on the bare concrete blocks, we don’t have plaster but everywhere there are gypsum board composite panels that our predecessor glued on in blobs. That already provides a certain basic "flatness." Although I would never install gypsum boards myself, but always gypsum fiberboard. In my opinion, cardboard has no place on walls (although probably every drywall installer would disagree with me on that – whatever. I see what the cleaning water from my predecessor has done to the gypsum boards, everything slowly dissolves into nothingness. Also sanding old plaster off gypsum boards is a nightmare because the whole cardboard comes off with it).
I wouldn’t just fill in, it’s too exhausting and too expensive. I once tried to even out old pickel plaster (gypsum plaster) on the ground floor with filler as a test. The alternative, simply ripping off the gypsum board along with the plaster from the chipboard where it’s only nailed on, is much easier and faster. Filling takes forever and is annoying. And you still have to sand, and once is not enough. Rather: rough filling, sanding, fine filling, sanding, finishing filler, possibly sanding again.
So as I said, I tend to go for glued gypsum fiberboards, one round of joint filling and sanding is enough.

Hello! Would a textile plaster (decorative plaster made from natural fibers) be an option for you? This also makes the basement cozy. And it is also slightly soundproofing, which may not be unimportant with concrete walls.