Author Topic: soundproofing the floor  (Read 3432 times)


  • Guest
soundproofing the floor
« on: May 20, 2009, 03:10:23 AM »
Im a bit of an audio junkie and im usually always making noise (music, games, movies and electric guitar)
the problem is that directly downstairs is the bedroom of someone who works night shift.
i already put down 3 layers 1-1.5 cm thick foam underlay and two additional layers of carpet on top of the existing carpet.
this worked extremely well with mid-high frequency sounds; however, when i have something going at a comfortable volume upstairs, quite an audible monochrome of low frequency noise can be herd.

i was thinking of taking out the carpet and underlay and building up a layer of flattened cardboard boxes to about 10 cm thick and then placing the carpet and underlay back on top.
im not convinced that this will work very well at all; however, do you think its worth a try or just a waist of time?

Randy S

  • Guest
Re: soundproofing the floor
« Reply #1 on: May 20, 2009, 03:13:47 PM »
The cardboard is a waste of time.The LF is getting through due to the connections in the floor/ceiling system and lack of Mass. Sounds like decoupling might not be an option in your case but you can add mass to the floor above with #2 MLV or cement board.