Enrique Leal is a Colorado master plumber (MP00301272) and the owner of Chukka’s LLC Plumbing in Denver, with twenty-five years in commercial plumbing. He consults on plumbing failure analysis, construction defect evaluation and standard of care. He can be reached at (323) 378-8325 or chukkabazooka@gmail.com. Code citations reflect the 2021 International Mechanical Code; confirm the edition and any local amendments adopted in your jurisdiction, and confirm any listing with the manufacturer and the authority having jurisdiction before you rely on it.
The code does not say the pipe has to come out. It says the material exposed in the plenum has to comply. There is more than one way to get there, and only one of them involves a demo crew.
