How can you nouns proof the upstairs floor from a underground store apartment?They can hear everything from upstairs? ...
Answers: you need to lay down an underlayment underneath the floor
Yes, it is costly depending on your motive. Go to the depot and purchase metal resilient channel usually surrounded by drywall section. Screw to floor joist near one screw per joist. Use a rubber washer per screw which will make contact beside the metal channel. In between the furrow or joists install high-ranking density fiber glass insulation or rock wool consequently sheetrock with 5/8 gooey drywall.
If you really have a philosophical wallet and own the property there are numerous nouns stage sound proofing materials on the internet.
Remember, nouns travels through solid components floor to ceiling or wall to wall. Any solid structure without a dampener will nouns like you are surrounded by the same room.
If you are surrounded by an apartment you may as well move or invest surrounded by allot of pillows and tape them to the ceiling.
Good Luck