How Do You Clear A Clogged Plumbing Vent?

If your plumbing fixtures drain slowly, the problem may be a clogged vent. This happens when vents are improperly located and when birds or animals deposit debris in the vent where it exits the roof. Set up an extension ladder to access the roof below the vent. Typically the vent consists of a metal or plastic pipe 3 to 4 inches (7.5 to 10 cm) in diameter that extends about 1 to 2 feet (30 to 60 cm) above the roof surface, usually above a bathroom. Install a roof ladder so you can work next to the vent. This single ladder hooks over the ridge and extends to the access ladder, allowing you to work safely and prevent damaging the roof. Shine a bright light down the vent pipe to look for leaves, nesting materials or other debris you may be able to remove from above. Put a garden hose into the vent and turn on the water. Listen for water backing up and a sudden whoosh when the weight of the water forces the clog into and down the drain. Or feed the hose down into the vent as you would a ...  more