ᐅ Is a fine plaster finish (Q2 lime-cement or gypsum) sufficient for living spaces?

Hello everyone
I am currently trying to familiarize myself with the topic of house construction and keep coming across some confusing questions. For example:

I have a building specification that states all living rooms will have fine plaster (quality Q2 cement-lime or gypsum plaster) applied to the walls. Nowadays, it is common to use plaster instead of wallpaper on walls. Would this type of plaster be suitable for that purpose, or does it require additional treatment, such as a different kind of plaster? Or does it definitely need to be painted or wallpapered afterward (the walls are intended to be white anyway)?

If a different type of plaster is needed, can it be applied directly, or does the fine plaster always have to be used as a kind of base coat?

- Q2 finish is sufficient for textured wallpaper.
- Q3 finish is necessary for paintable fleece wallpaper or direct paint on plaster.

At our place, gypsum plaster is applied with a Q2 finish and then prepared to Q3 by the painter to allow for the adhesion of fleece wallpaper.

How much does it cost you per square meter (painter + materials)?

I don’t know, unfortunately. We are building with a general contractor, a fixed price including painting work!

Ah, okay, thanks anyway

We have applied Q2 and painted. It needs to be primed beforehand, like almost any surface. Nothing more.
Q2 is not flawless. But if someone is considering skipping wallpaper or fleece, that’s exactly what they want [emoji2]