If you've got a stubborn leak under the sink, it might be time to replace the sink trap. Your sink trap is exposed to water throughout the day, and that can cause rust formation. Over time, the rust buildup can cause leaks, which will eventually cause the entire trap to deteriorate. If your sink trap has obvious signs of leaks or rust, the simple instructions provided here will guide you through the replacement process.
Grab Your Supplies
Before you start the replacement process, you'll need to grab the supplies. This will reduce the need to stop in the middle of the repair. To replace your sink trap, you'll need a bucket, a pipe-wrench or groove-joint pliers, a new sink trap, and a dry cloth. It's also a good idea to grab a tarp or some old newspapers to place under the sink. Once you have your supplies, you'll be ready to start the project.
Remove the Nuts
Place your bucket directly under the sink trap. Use your pliers to loosen the slip nuts located on the sink trap. Once you have them loosened, use your fingers to lift them up and away from the sink-trap connection. Carefully pull down on the sink trap to remove it. You'll want to do this slowly because water and drain gunk may flow from the pipes—that is why you have the bucket under the trap. Remove the slip nuts and set them aside. You'll be able to use them to connect your new sink trap. Toss the old sink trap in the trash.
Clean the Pipe Connections
Once you have the sink trap removed, you'll need to clean the pipe connections. This will remove any greasy residue that might keep your new trap from sealing properly. Be sure to wipe inside the pipes as well. This is also a good time to flush the drains to get rid of any smelly debris that might be clogging up the pipes. Pour about a gallon of water down the drain and allow it to collect in the bucket.
Connect the New Sink Trap
Now that you're ready to connect the new sink trap, place the slip nuts around the connections. Place the sink trap up against the drain pipes and press firmly to attach the two connections. Push the slip nuts into place and tighten them with your fingers. Now use your pliers to tighten them securely to the trap. Run the water for about a minute to test for leaks.
If your sink trap is worn out, it's time for a new one. A leaky sink trap can lead to wood rot and mold growth under the sink. Use the instructions provided above to replace your trap. If you run into problems, be sure to contact a plumber such as Rapid Rooter Of Central Oregon as soon as possible.