Are you dealing with slow drains or unpleasant odors in your home? You might have a clogged plumbing vent. At Arnold & Sons, we’ve been helping Peoria homeowners clear clogged plumbing vents since 1988. In this guide, we’ll walk you through how to clear a clogged plumbing vent and when to call for professional help.
What Is a Plumbing Vent, and Why Does It Get Clogged?
A plumbing vent is a pipe connected to your home’s drain piping. It typically runs upward inside a wall, passes through the attic, and ends above the roof. From outside, you may see its opening as a short pipe sticking out of the roof. Your home may have several vent pipes, or multiple vents may join before reaching the roof.
This vent provides an open connection between your drain system and the outside air. It lets air enter as wastewater drains away and allows sewer gases to escape above the roof. This airflow also helps prevent draining water from creating suction that empties the water-filled traps beneath your fixtures, which keep sewer odors from entering your home.
Leaves, twigs, and nesting materials can obstruct the roof opening or lodge farther down the vent pipe. When the blockage restricts airflow, draining wastewater can create suction inside the drain system. Air may then be pulled through the water in a sink, shower or toilet trap, producing gurgling or bubbling sounds.
If that suction draws enough water out of the trap, it weakens the water barrier that keeps sewer gases out, allowing unpleasant odors into the room. You may also notice slower drainage if you have a clogged plumbing vent.
Signs Your Plumbing Vent May Be Clogged
To determine whether you’re dealing with a clogged plumbing vent, watch for these symptoms:
- Gurgling or bubbling sounds when sinks, tubs, and toilets drain or another fixture is used
- Sinks and showers drain slowly
- Toilets struggle to flush
- Changing toilet-bowl water levels
- Sewer odors near drains
A professional plumber can inspect the drainage and vent piping to determine where the problem is before choosing a clearing method.
Can You Clear a Plumbing Vent Yourself?
You may be able to remove a minor obstruction if loose leaves or twigs are sitting at the vent opening. This only applies when you can reach the opening safely. A blockage farther inside the pipe requires a professional touch to avoid damaging the vent.
Check Whether the Opening Is Safely Accessible
Start by looking at the roof vent from the ground. Using binoculars might be helpful. You may spot debris around the opening, although a clear-looking opening does not rule out a blockage deeper inside.
If reaching the vent requires stepping onto the roof or leaning from a ladder, leave the work to a professional. Avoid climbing onto your roof in wet, icy, or windy conditions.
Remove Only Loose Debris at the Opening
If the opening is safely accessible, wear work gloves and lift away loose leaves or twigs resting at the top. Keep your hands outside the pipe to avoid pushing material farther down.
Stop if the obstruction is packed tightly, extends beyond reach, or appears to involve an animal or nest. Do not force tools into the opening or run a garden hose down the vent to try to dislodge it.
Check Whether the Symptoms Improve
After removing surface debris, briefly run an affected faucet or flush a toilet, provided no fixtures are already backing up. Watch the drainage and listen for continued gurgling. Stop running water if it begins to back up.
If the symptoms remain or return, the obstruction may be deeper in the vent. It’s also possible the problem lies with the drain piping itself. Arnold & Sons can locate the cause and select the appropriate clearing method.
How Arnold & Sons Plumbers Clear a Clogged Plumbing Vent
Locate the Obstruction
We check the affected fixtures and inspect the vent opening for leaves, twigs, other nesting materials, or other obstructions. If the obstruction is farther inside, an inspection camera may help locate it and reveal damaged piping that needs repair.
Remove the Blockage
If the clogging debris is near the opening, our plumber may simply remove it by hand. If the obstruction is deeper, our plumbers may feed a plumbing auger, which is a flexible cable designed to clear pipe blockages, into the vent to break up or retrieve the material.
Test the Connected Fixtures
After clearing the vent, we run water through the affected fixtures and flush toilets to check drainage, listen for gurgling, and watch for unusual changes in toilet-bowl water levels. If symptoms remain, we investigate further for a drain blockage or another plumbing problem.
Schedule Help With a Suspected Vent Blockage
Persistent sewer odors, recurring gurgling, or problems affecting several fixtures deserve professional attention. If wastewater is backing up, stop using the affected fixtures and call for help.
Arnold & Sons provides professional plumbing repairs to identify and resolve the source of the trouble. Contact our team to schedule an inspection.
