ᐅ Aerated concrete wall between living room and bedroom is too sound-permeable; which type of double-layer wall should be used instead?
Created on: 13 Nov 2025 13:51
A
Angeliter
Hello everyone,
We have an 11.5 cm (4.5 inch) Ytong wall between the bedroom and living room, but it’s so thin that you can hear everything from the living room in the bedroom, for example when someone is watching TV at low volume.
Now we are considering adding a second wall in front of the existing one in the living room, with some space between them. One option is a heavy, solid sand-lime brick wall (but in that case, we would need masonry ties between the aerated concrete and the sand-lime brick wall, which means there wouldn’t be a decoupling of the two walls, right?) or a lightweight stud wall with CW/UW metal profiles, mineral wool insulation, and double or even triple layers of gypsum fiberboard.
How would you approach this?
Best regards
We have an 11.5 cm (4.5 inch) Ytong wall between the bedroom and living room, but it’s so thin that you can hear everything from the living room in the bedroom, for example when someone is watching TV at low volume.
Now we are considering adding a second wall in front of the existing one in the living room, with some space between them. One option is a heavy, solid sand-lime brick wall (but in that case, we would need masonry ties between the aerated concrete and the sand-lime brick wall, which means there wouldn’t be a decoupling of the two walls, right?) or a lightweight stud wall with CW/UW metal profiles, mineral wool insulation, and double or even triple layers of gypsum fiberboard.
How would you approach this?
Best regards
N
nordanney25 Nov 2025 21:4739 dB to 47 dB is a huge difference. It corresponds to approximately a 50% reduction in perceived loudness.