Wall construction on lime-cement plaster (healthy for living / mineral)

Why someone would actively choose this is not clear to me. Lower costs, less effort, and easier to process, I assume.

Objectively, the indoor climate does not care whether a fleece is embedded with filler or glued on. If done properly, you get perfectly smooth walls with painter's fleece. In terms of processing, both are relatively similar.

So for the layperson doing it themselves, painter's fleece is much easier (I claim, having tried both). I couldn’t get an entire wall completely smooth and wave-free by plastering (and sanding and plastering again and sanding again). Painter's fleece is sand once, prime once, glue once, and then paint. Done, baby-bottom wall.

I thank you all for the interesting discussion. I don't know what Latex walls look like, I have never worked with it. It's good that you warned me beforehand, I probably would have regretted it later. I have now decided on dispersion silicate paint.

Objectively, the indoor climate doesn't care whether a fleece is applied with putty or glued on.
If done properly, you get perfectly smooth walls with painter's fleece.
In terms of processing, both are relatively similar.

So for the layman doing it himself, painter's fleece is much easier (I claim this, having tried both).
I never managed to get an entire wall completely smooth and free of waves by putting on putty (and sanding and puttying again and sanding again).
Painter's fleece is sanding once, priming once, gluing once, and then painting. Done, baby-powder wall.

I see it somewhat differently, but I expressed it too imprecisely in my post. We applied fiberglass mesh as crack reinforcement on plastered walls and ceilings in an old apartment with putty. There's a 3-5mm fine putty layer over it, and the mesh is much coarser than painter's fleece, and in the end, in my opinion, a more high-quality looking finish comes out than with the wallpaper-like appearance of painter's fleece – at least for me. Besides the indoor climate, what bothers me about the painter's fleece glued in the current rental apartment is that you can exactly see where someone has drilled (and then of course re-puttied and painted) or where someone scraped hard along the wall because the texture of the putty spot simply isn’t the same as that of the painter's fleece. It’s probably different with embedded fine fleece, but with glued fleece that should always be a potential issue, right? At least I've heard this criticism from other people as well. After all, there's no "meat" on the surface so you can't properly sand after filling holes.

Yes, puttying and sanding is naturally more work and somewhat more demanding – that was my assumption why many people decide on painter's fleece. But we also didn’t find it so difficult doing it ourselves with the right equipment (the large fantastic Parfait spatulas and a Planex are worth their weight in gold). After the first room, my husband got it pretty perfect (and now I suddenly look hyper-critically at the walls in many houses shockingly poorly puttied by alleged professionals – such a "can't unsee it" phenomenon). We will certainly do it the same way again in the planned new building, but sure, it takes a bit of practice and it’s not exactly fun tax exempt either.

I thank you all for the interesting discussion. I don't know what latex walls look like, I've never worked with them. Good that you warned me beforehand, I probably would have regretted it afterwards. I have now decided on dispersion silicate paint.

Good decision, latex paint is really an eyesore (and also unpleasant if you want to remorsefully remove it from the wall). By the way, when our cat was very ill, she soiled our hallway walls with vomit and very watery feces, and both could be removed without residue from the dispersion silicate paint applied there using a wet microfiber cloth. So "normal" dirt from a wet dog or the like should actually not be a problem.

I believe people often talk past each other because Malervlies is unfortunately used as a term for so many different things (it is even used to refer to the floor covering fleece). I am talking about really heavy (150g/m² and up) cellulose-based fleece that is vapor-permeable and smooth for baby bottoms. In my opinion, after painting it just looks like a smooth wall. Any surface texture then comes from the paint roller. So unintended scratches, etc., usually do not occur with such Malervlies. I also don’t habitually drill holes in the walls in my house to then have nothing on the wall. But yes, I think you would probably see a spackled spot more than on a wall that is already completely spackled. But it would also depend on an experiment whether you can large-area cut out a piece of Malervlies, reattach it, and repaint it. In any case, you also cannot see the seams of the strips after painting.