I own a two family house that was once a single family. The sound transmission between the floors is quite high. I would like to know if anyone has any ideas how I can stop some of the noise. The floor is built of full-size 2×8,with a layer of plastered blue for the ceiling below. The cavity is filled with fiberglass battings. The floor is old one by pine, with 5/8 ply, followed by carpet pad and carpet. The carpet is old and needs to be replaced. This would give me access to the space in between, which I though that I could remove the fiberglass and put something with greater sound deadening qualities back in its place. The downstair apartment is rented and I canÃ¢â‚¬â„¢t work from that side.