Quieting PVC pipe

[Alexander Dobert]

When we remodeled one of our bathrooms and kitchen, we moved the cast-iron waste-pipe a few feet into the kitchen wall and replaced with PVC. Now when you flush the toilet above, you can hear the water draining quite loudly. Is there a way to quiet the noise with insulating foam or some other method? I have access to the pipe from the basement. Thanks and any tips would be appreciated.

Alex

 

[Matt30]

You can put sound deadening material around it but the best thing would be to replace the pvc with cast iron again. Still a popular practice in new home construction