Author Topic: Reducing upstairs noise  (Read 4707 times)


  • Guest
Reducing upstairs noise
« on: November 26, 2005, 11:03:26 PM »
I have a wood frame condo that has the ceiling rolled insulation and sheetrock completely removed from water damage. Even at a moderately low volume the bass stereo sounds from my unit disturb my upstairs neighbors and I hear them on their tiled floors.
Could the closedcell "Insulfoam" board avail at Lowes for $9/sheet be installed in any way to absorb and cushion the noise being transferred to my unit.  I know there are expensive options avail but am not able to go that route as the noise is not THAT bad.  I would like to take the opportunity while it is exposed to dampen the noise transfer at an economical price if possible.


  • Guest
Re: Reducing upstairs noise
« Reply #1 on: September 01, 2006, 03:24:41 PM »
Low frequency sounds have a long wavelength.  Consequently, you need a thicker barrier/absorber to contain or reduce the amplitude of the wave.

Start by adding cotton fiber insulation in the area between your floor joists.  Install a layer of MLV directly under the floor joists.  Make sure you tape the seams and caulk around the perimeter to create an air-tight seal.  Add two sheets of 5/8" drywall with Green Glue in between the two sheets.  The Green Glue will dampen the sound.  The MLV adds density to reflect/block the sound and the cotton serves to absorb.

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