What is on the other side of the drywall gap? Just an empty void?
I have some expertise in this area (insulator by trade) but I'm not 100% sure what materials are available to the public i just order from the supplier
If you can get your hands on some mineral wool (Sometimes called rockwool or roxul) it has good acoustic insulation properties and doesn't become airborne particles unless you really fuck with it. If you're not going to be shoving it directly into the neighbors apartment but rather just into some framing you can stuff the top of the drywall with that and as long as you compress it around 50% and don't rip it up it should solve your issue. I don't see why you'd need the gap unless there's only one fresh air intake between your apartments but usually they'd install a vent
If you're the type to do some stealing, this is what you're looking for on a construction site it can be more green in color or even dark brown/grey. You can cut it with a steak knife or any sufficiently sharp straight blade very easily into strips and it compresses easily by hand. It's pretty safe but if you use a serrated blade it'll create some fluffy bits don't eat them or whatever
Mineral wool or rock wool, sometimes called acoustic insulation board or fire resistant wool.
Most construction sites in the framing or drywalling stage will have it lying around everywhere
What is on the other side of the drywall gap? Just an empty void?
I have some expertise in this area (insulator by trade) but I'm not 100% sure what materials are available to the public i just order from the supplier
If you can get your hands on some mineral wool (Sometimes called rockwool or roxul) it has good acoustic insulation properties and doesn't become airborne particles unless you really fuck with it. If you're not going to be shoving it directly into the neighbors apartment but rather just into some framing you can stuff the top of the drywall with that and as long as you compress it around 50% and don't rip it up it should solve your issue. I don't see why you'd need the gap unless there's only one fresh air intake between your apartments but usually they'd install a vent
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https://image.made-in-china.com/2f0j00ZQGYaRKMVrus/Fireproof-Mineral-Wool-Insulation-50mm.jpg
If you're the type to do some stealing, this is what you're looking for on a construction site it can be more green in color or even dark brown/grey. You can cut it with a steak knife or any sufficiently sharp straight blade very easily into strips and it compresses easily by hand. It's pretty safe but if you use a serrated blade it'll create some fluffy bits don't eat them or whatever
Mineral wool or rock wool, sometimes called acoustic insulation board or fire resistant wool.
Most construction sites in the framing or drywalling stage will have it lying around everywhere
Thanks! I'll have a look around online first lol.