Brian Tym on PVC and Noise Abatement “I was working on a six-story outpatient facility. I wanted to specify cast iron, but they said absolutely not. We save money by using PVC pipe. I remember thinking, ‘Ooooookay, now that problem is going to come back to me later.’” “The problem was that everything – storm, sanitary, and clean waste water mains – all runs over a waiting room area. So when it rains, it sounds like a waterfall. So it came back to me with the ‘what can we do?’” “All horizontal drain piping was wrapped with 1" fiberglass insulation. ” “So now we have to add additional layers of fiberglass insulation to approximately 800 feet of PVC pipe to get it down to the noise rating of cast iron. There’s no way this is a cost savings.” “PVC has its place and is a grea

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