A clogged sewer vent (or vent stack) is a serious but often overlooked plumbing issue. While standard drain clogs happen in the pipes carrying water away, a vent clog occurs in the pipe that brings air into the system. Without this airflow, your drains lack the necessary pressure to move waste, leading to slow drainage and dangerous sewer gas buildup. Recognizing a Clogged Sewer Vent
This is the first step and often fixes the problem if the clog is caused by leaves, dust, or a bird's nest near the surface.