I had some 11.5 cm walls built with a solid block stone instead of a hollow block stone contrary to the initial offer, e.g., the partition wall between the children's rooms, to the technical room, etc. 46dB R'w,r - hope that's enough. It will become clear eventually.
And then you don't have a material mix? Additionally, lightweight walls are the worst choice acoustically – even when double-layered...
This is and remains objectively wrong. Drywall, properly executed, is ideal for internal sound insulation and preferable to KS. Your bad experiences do not really disprove this.
OK, I give up - I really underestimated the acoustics and certainly our very negative experiences contributed to that. Although the drywall towards the elevator shaft really hadn't let anything through...
I would like to support Sebastian there. According to various literature, one can conclude that sound insulation has to do with mass. According to the logic, I would say a lightweight wall has less mass.
I would like to support Sebastian there. According to various literatures, you can deduce that sound insulation has something to do with mass. According to that logic, I would say a lightweight wall has less mass.
It is not just about mass alone, and obviously you have not dealt properly with sound insulation. The sound insulation value of drywall partitions (apart from the standard ones) is significantly higher than that of masonry. On Knauf.de you can download the corresponding PDFs and be amazed at what is possible.