Double or single drywall

hello,

What do you think, in the upstairs two children's rooms double drywalling (2x12), or is a single layer (1x20) enough? Also sound insulation in between, or is normal insulation enough? (Our bedroom is on the ground floor)

What do you think, in the upper floor in 2 children's rooms double plasterboard (2x12),

Why? Are you building in Chochstedt?

Rhenish greetings

No, 68 km away. It was just a discussion with my site manager, the question remained open. I have no experience. Always the same question, single-layer without sound insulation is cheaper than the other option. How much cheaper I don't know yet, first the question if anyone has already regretted having load concerns.

I would double-board (stability, crack formation). Whether this significantly helps with soundproofing is not so easy to say, the topic is a bit more complex. The wall obviously needs to be insulated on the inside and must be decoupled from the external masonry. Are sockets/light switches going in there? How are doors and frames planned?

Light switches, sockets - yes. I cannot yet say exactly how the frames will be mounted, I have not discussed these details yet. Here I trust the site manager. They are very simple Prüm doors, with a few stainless steel inserts. From my point of view, double is much more stable; whether the insulation makes such a difference with soundproofing, I cannot say.

The insulation contributes significantly more to soundproofing than the double boarding.