12/06/2022
Signs of Poor Plumbing Venting
Poor, missing, or blocked vents cause several plumbing issues. Vent blockage is a common plumbing problem. The vents terminate outside above the roof, so they’re prone to blockage from branches, leaves, snow, and small pests.
A blocked vent can mimic a clogged drain by causing slow drainage. If no air can make it through the top of the pipe, atmospheric pressure builds up and slows or stops drainage. In addition, a foul odor from your sink drains is a sign of a vent issue. If sewer gasses can’t escape through a vent, they build positive pressure and push through trap seals.