How to make the best of a compromised floor ?
I've just taken over a previously built rented studio space. It has double stud walls and ceiling, which seems ok for isolation, but the builder has built the walls on a metal modular floating floor system that was constructed when the building was an open plan office.
So there is a metal tiled floor (which I can lift to access the cavity but not remove permanently )supported by metal uprights, with a 6 inch cavity then concrete floor.
Whilst this doesn't sound too bad the cavity extends under the newly constructed partition walls so sound can carry under to other rooms.
I can put materials into the void but nothing permanent as its leased building.
I've thought about sandbags or rockwool under the wall in the cavity, but not sure what would be most effective.
Also do I need something in the rest of the void or is it acting as a bass trap of sorts?
It doesn't need to be heavy duty as all the rooms monitor fairly quietly as they are mainly writing rooms, but a good compromise solution.
Any ideas would be greatly received as I want to move in soon and need to treat before I put gear in!!