PVC drain noise Home › Forums › Public Forums › General Plumbing › PVC drain noise This topic has 1 reply, 2 voices, and was last updated 23 years, 1 month ago by DUNBAR. Viewing 1 reply thread Author Posts 1 Sep 2003 at 5:28 pm #276937 curtisbonnerMember Is there a way to insulate the PVC drain from a washing machine? The laundry room is in the center of the house and the drain noise is horrible. 1 Sep 2003 at 6:37 pm #295064 DUNBARParticipant Open the wall where the drain is and insulate the walls surrounding the pipes. In some elegant homes, they are resorting to cast-iron stacks to dampen the sound of water travelling down the pipes. It seems like a good idea. Can’t knock cast-iron though, some of that piping will still be in use long after I’m gone. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In