How To Replace Bathroom Sink Plumbing

Replacing bathroom sink plumbing is a common plumbing project that can be completed in a few hours with the right tools and materials. By following these steps, you can replace your bathroom sink plumbing safely and efficiently.

Step 1: Gather Your Tools and Materials

Before you begin, gather the following tools and materials:

Adjustable wrench
Pliers
Screwdriver
Hack saw
New sink drain
New sink trap
Plumber's putty
Teflon tape

Step 2: Turn Off the Water Supply

Locate the water supply valves under the sink and turn them off. Open the faucet to release any remaining water in the lines.

Step 3: Disconnect the Old Drain

Use the adjustable wrench to loosen the nuts that hold the old drain in place. Once the nuts are loose, remove the old drain and discard it.

Step 4: Install the New Drain

Apply a bead of plumber's putty around the base of the new drain. Insert the drain into the sinkhole and tighten the nuts until they are snug. Do not overtighten the nuts.

Step 5: Connect the New Trap

Connect the new trap to the drain. Tighten the nuts until they are snug. Do not overtighten the nuts.

Step 6: Connect the Water Supply Lines

Wrap Teflon tape around the threads of the water supply lines. Connect the water supply lines to the faucet. Tighten the nuts until they are snug. Do not overtighten the nuts.

Step 7: Turn On the Water Supply

Turn on the water supply valves under the sink. Check for leaks around the drain, trap, and water supply lines.

Step 8: Clean Up

Once you have checked for leaks, clean up any mess that you made. Your bathroom sink plumbing is now replaced.

Tips

If you are not comfortable replacing your bathroom sink plumbing yourself, call a licensed plumber.
Be sure to use Teflon tape on all threaded connections.
Do not overtighten the nuts on the drain, trap, or water supply lines.
If you have any questions, consult a plumbing professional.