How To Change P Trap Under Bathroom Sink

A P-trap is a U-shaped pipe that is installed under a sink to prevent sewer gases from entering the bathroom. It is important to keep the P-trap clean and free of debris, as a clogged P-trap can lead to slow drainage or even a complete blockage.

If you are experiencing problems with your sink drainage, one of the first things you should check is the P-trap. Here are the steps on how to change a P-trap under a bathroom sink:

1. Gather your materials

Before you start, you will need to gather the following materials:

New P-trap
Adjustable wrench
Bucket
Rags
Plumber's putty

2. Turn off the water supply

The first step is to turn off the water supply to the sink. This is usually done by turning the handles on the shut-off valves located under the sink. Once the water is turned off, open the faucet to release any remaining water in the lines.

3. Disconnect the old P-trap

Place the bucket under the P-trap to catch any water that may leak out. Use the adjustable wrench to loosen the nuts that connect the P-trap to the sink drain and the drainpipe. Once the nuts are loose, you can remove the old P-trap.

4. Clean the drain and drainpipe

Once the old P-trap is removed, take the opportunity to clean the drain and drainpipe. Use a rag to wipe away any debris or gunk that has built up. You can also use a drain cleaner to help remove any clogs.

5. Apply plumber's putty to the new P-trap

Roll out a small piece of plumber's putty and form it into a ring. Place the ring of plumber's putty around the base of the new P-trap.

6. Install the new P-trap

Place the new P-trap under the sink and align it with the drain and drainpipe. Hand-tighten the nuts that connect the P-trap to the drain and drainpipe. Once the nuts are hand-tight, use the adjustable wrench to tighten them further.

7. Turn on the water supply

Once the P-trap is installed, turn on the water supply to the sink. Check for any leaks around the P-trap. If there are no leaks, you have successfully changed the P-trap under your bathroom sink.

Tips

Here are a few tips to make the job easier:

Use a flashlight to see better under the sink.
If you have a tight space, you can use a basin wrench to loosen the nuts.
Don't overtighten the nuts, as this can damage the P-trap.
If you are not comfortable changing the P-trap yourself, you can call a plumber for assistance.

Changing a P-trap under a bathroom sink is a relatively simple task that can be completed in a few minutes. By following these steps, you can keep your sink draining properly and prevent sewer gases from entering your bathroom.