How To Replace A Bathroom Sink Trap

A bathroom sink trap is a U-shaped pipe that connects the sink drain to the main drain line. It's designed to trap water and prevent sewer gases from escaping into the bathroom. Over time, the trap can become clogged with hair, soap scum, and other debris, which can lead to slow drainage or even a complete blockage. If your sink is draining slowly, one of the first things you should check is the trap.

Replacing a bathroom sink trap is a relatively simple plumbing repair that can be completed in about 30 minutes. Here's a step-by-step guide:

1. Gather Your Tools and Materials

New bathroom sink trap
Adjustable wrench
Bucket or bowl
Rags or towels
Plumber's putty (optional)

2. Turn Off the Water Supply

The first step is to turn off the water supply to the sink. There should be two shut-off valves under the sink, one for hot water and one for cold water. Turn both valves clockwise until the water is completely off.

3. Disconnect the Old Trap

Place the bucket or bowl under the trap to catch any water that may leak out. Using the adjustable wrench, loosen the nuts that hold the trap in place. Be careful not to overtighten the nuts, as this can damage the trap.

4. Remove the Old Trap

Once the nuts are loose, you can remove the old trap by pulling it straight down. Be careful not to spill any water that may be trapped in the trap.

5. Install the New Trap

Apply a small amount of plumber's putty to the rim of the new trap. This will help to create a watertight seal. Place the new trap in position and hand-tighten the nuts.

6. Tighten the Nuts

Use the adjustable wrench to tighten the nuts on the trap. Be sure to tighten them snugly, but do not overtighten.

7. Turn on the Water Supply

Turn on the water supply to the sink and check for leaks. If there are any leaks, tighten the nuts further. Once you are sure that there are no leaks, you can finish up by cleaning up any water that may have spilled.

Replacing a bathroom sink trap is a simple plumbing repair that can be completed in about 30 minutes. By following these steps, you can save yourself the cost of calling a plumber.