How to Add a Vent to Existing Plumbing (Step-by-Step Guide)

Why Your Drain Needs a Vent (And What Happens Without One) If your sink gurgles, your toilet bubbles, or you catch a whiff of sewer gas in your bathroom, your plumbing may be missing a crucial component: a vent. Knowing how to add a vent to existing plumbing isn’t just about fixing annoyances—it’s essential for…