Nick Cantu talks about the importance of cast iron. “It was a building renovation for a day spa. Two stories, showers and bathrooms upstairs and massage rooms downstairs.” “Because noise was a factor, I wrote in my spec that all vertical risers should be cast iron and all connection points should be insulated.” “When I walked the site, I noticed that the installed risers were PVC. My comment on the observation report was, ‘Not cast iron, may be a noise problem.’” “They said, ‘We’ll just put more insulation in.’ I said, ‘That’s not going to help you much.’” “ A month later, we started getting calls. Customers complaining that their spa experience was ruined by the sound of flushing toilets.” “I’m frustrated that they didn’t listen. Anytime I see a potential noise issue,

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