"Mark L." writes:

Greetings All,
Is there a product that will minimize the noise from 2" PVC waste
piping that runs overhead through the ceiling? Since all of the walls
and ceilings are opened up and almost ready to be drywalled, this is
the time for some sound insulation/isolation. Can anything be wrapped
around the pipes, or is the sound deadened by filling up the
stud/joist bays with a product? Thanks in advance, Mark L.

Insulation around it would be quite effective. Thicker the better.

However, you may find that wallboard alone may quiet it up quite a bit
itself, but there's no harm in wrapping it with additional goodies if
the cost/time isn't a worry.

--
Todd H.
http://www.toddh.net/