It’s not unusual for homeowners to experience plumbing problems due to clogged U-bends—the U-shaped section of piping underneath a sink. This important part is also known as the P-trap, and it's vital to the system's longevity and functionality. Since the bend is so vulnerable to hair, grease, and soap scum accumulation, it may occasionally become blocked, causing sink backups and harsh odors. If you’re concerned that a U-bend in your home is clogged, the following guide outlines how to safely handle the situation and when to call a plumber for assistance.

How to Unclog the U-Bend

1. Prepare the Workspace

Since this can be a slightly messy task, preparation is an important step. Remove any products or items in the cabinet so you have enough space to maneuver. Place a towel or a bucket underneath the bend. If anything leaks while you work, the container catches the water and debris, keeping it from covering the floors or causing water damage.

2. Remove the U-Bend

Each side of the pipe has a threaded cap that should easily screw off. However, if a plumber hasn’t performed maintenance in a while, you might have some difficulty loosening these components. Try using a lubricating solution to help remove the caps. Once they’re off, gently remove the U-bend, and hold it over the bucket so you can pour out any water inside the pipe. 

3. Clean the Pipe Section

Remove grime and particles that have accumulated in the bend, and start with solid materials, like hair and dirt. Wastewater can also leave behind other contaminants, such as scummy buildup and mold. Use a flexible brush to gently scrub the sides of the pipe to eliminate all traces of remaining debris.

4. Reattach the U-Bend

Reattach the section of piping once it's completely clean, and make sure the longer end is facing the portion closest to the sink drain. Snugly screw on the threaded caps. Use a wrench if necessary to ensure that there are no gaps present; otherwise, you risk dealing with unexpected leaks that require a plumber’s attention.

5. Check for Possible Leaks

Turn on the sink to check for leaks. Assess the U-bend to ensure there aren’t any water droplets present and that moisture isn't squeezing out from the connection points. The water should drain smoothly and efficiently in the sink. If it doesn't, the clog may not have been related to the U-bend, and you may need a plumber's assistance.

If you need assistance cleaning a clogged U-bend, turn to the plumbers at A All Valley Plumbing & Sewer Service for help. This family-owned and -operated company has been proudly serving homeowners throughout Cincinnati, OH, and the Tri-State area since 1989. Their knowledgeable team offers a variety of services, including drainage system maintenance, emergency plumbing, backflow testing, and water heater installation. Visit the website for information, or call (513) 733-3311 to schedule an appointment.