Build with real walls.
The day you want to change wardrobes, you won't appreciate solutions that require rebuilding the walls.
Wall construction preferably… Gypsum, 45x70 with insulation, gypsum. That is, the wall thickness becomes 96 mm.
If you need better fastening options, add chipboard or OSB behind the gypsum, that is, 12 mm on each side.
It may be appropriate to already consider future needs, if you want to switch to sliding doors, remember that the total depth will then be closer to 700 mm than 600 mm.
/Kent
/Kent
The day you want to change wardrobes, you won't appreciate solutions that require rebuilding the walls.
Wall construction preferably… Gypsum, 45x70 with insulation, gypsum. That is, the wall thickness becomes 96 mm.
If you need better fastening options, add chipboard or OSB behind the gypsum, that is, 12 mm on each side.
It may be appropriate to already consider future needs, if you want to switch to sliding doors, remember that the total depth will then be closer to 700 mm than 600 mm.
/Kent
/Kent
If you fill the cavity with mineral wool and preferably two layers of gypsum, it can work reasonably well sound-wise. I have a similar solution without insulation and with one layer of Tretex between my teenagers' rooms, which is not successful. It's enough for one of them to have the TV on in the evening for it to become a real hassle because it can be heard through... Planning to screw on a few layers of gypsum to prevent bloodshed...
You need to ensure that one side does not have contact with the other. What I mean is if you place a 45+95 up there and an equal one down there. Have studs standing up that are 45+70. So it will be like a slalom course. The different sides of the room's studs and plaster should not meet. You should use the heaviest insulation possible, use stone wool. Good luck. Is there anything that is unclear? Write.
It works to do as you planned, but do the wardrobes go all the way up to the ceiling? Otherwise, it will be a bit odd with plasterboard on only one side of the studs.. If it's a misstep, and the wardrobes don't go to the ceiling, I would also build a wall between the single wardrobe and the others.
You should have plaster on both sides.