I lined a bathroom wall and ceiling with regular insulation. Did not seem
to help at all with noise. Tinkle... tinkle..... tinkle flush!


"Ivan" wrote in message
...
As for the sound it will help some. depending on your situation, there
is
a
black fibrous board (4X8 sheets) that I have seen installed under
drywall
that seems to help sound transmission.


Would that fibrous board be called "buffalo board"?

I remember meeting someone who saved all his drywall scraps and cut them
into pieces 3 1/2" wide. He laid them down inside the wall cavity as a
sound proofing method. I never did find out how that worked. I was
wondering if something similar would work inside the joist cavities. I
would never try anything this silly but I'm visualizing lining the joists
and bottom of the upper subflooring with drywall.

Ivan