Replacing Bathroom Sink Drain Pipe

If you are experiencing slow drainage or leaks under your bathroom sink, it may be time to replace the drain pipe. This is a relatively simple plumbing repair that can be completed in a few hours with the right tools and materials.

The drain pipe is the curved pipe that connects the sink drain to the main drain line. Over time, the drain pipe can become clogged with hair, soap scum, and other debris, which can lead to slow drainage. The drain pipe can also develop leaks, which can cause water to leak under the sink.

To replace the drain pipe, you will need the following tools and materials:

Adjustable wrench
Phillips head screwdriver
New drain pipe
Plumber's putty
Bucket
Rags

Once you have gathered the necessary tools and materials, you can follow these steps to replace the drain pipe:

Turn off the water supply to the sink. There should be two shut-off valves under the sink, one for the hot water and one for the cold water. Turn both valves clockwise to shut off the water.
Open the drain stopper to allow any water to drain out of the sink.
Place a bucket under the sink to catch any water that may leak out during the repair.
Use the adjustable wrench to loosen the nuts that hold the drain pipe in place. There will be two nuts, one on each end of the drain pipe.
Once the nuts are loosened, you can remove the old drain pipe.
Apply a bead of plumber's putty to the new drain pipe. The plumber's putty will help to create a watertight seal between the drain pipe and the sink drain.
Insert the new drain pipe into the sink drain. Tighten the nuts on each end of the drain pipe using the adjustable wrench.
Turn on the water supply to the sink and check for leaks. If there are any leaks, tighten the nuts further until the leak stops.
Replace the drain stopper and clean up any water that may have leaked out during the repair.

Replacing a bathroom sink drain pipe is a relatively simple plumbing repair that can be completed in a few hours. By following these steps, you can save yourself the cost of hiring a plumber.