Plumbing Vent Pipe Clogged Now

This is the most common symptom. If you flush the toilet and hear a gurgling sound coming from the sink or bathtub, your vent is likely blocked. The air that should be escaping up the vent is instead being forced back down through the other fixtures, causing them to "bubble."

: A properly functioning vent carries odors safely out the roof. A blockage can siphon the water out of your P-traps, allowing toxic gases like hydrogen sulfide (which smells like rotten eggs) to enter your home. plumbing vent pipe clogged

Because the vent pipe is hidden behind walls and exits through the roof, you can’t see the clog. However, you will certainly notice the effects. Look for these tell-tale signs: This is the most common symptom