How to Clean a Drain Vent

A clogged exterior drain vent can cause serious problems for your home's plumbing and drainage. Often, the cause of the problem is poor placement of the drain or animal deposits. In any case, a trip to the roof usually can clear up the problem.

Things You'll Need

• Extension ladder
• Roofing ladder
• Flashlight
• Garden hose

Instructions

1. Get to the roof safely by securely deploying the extension ladder.

2. Locate the drain vent. This will be a metal or plastic pipe, about 4 inches in diameter, extending 1-2 feet above the surface of the roof. It probably will be coming out above a bathroom. Move the extension ladder if necessary for easier access.

3. Toss the roofing ladder over the ridge of your roof for safe access, and climb out to the vent.

4. Shine a bright light down the vent to see if there are any blockages.

5. Turn on the water hose at high pressure and shoot water down the drain. Wait until you hear a whooshing sound of the water clearing the obstacle. Check again with the flashlight to be sure the stoppage is cleared.

Tips & Warnings

• Always use caution when climbing on roofs.

References

• DWV Plumbing System