How To Replace Pipes Under Bathroom Sink

Replacing the pipes under a bathroom sink 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.

1. Gather your materials.

You will need the following materials to replace the pipes under a bathroom sink:

New pipes
Pipe cutter
Pipe wrench
Teflon tape
Basin wrench
Putty knife
Caulk gun
Caulk

2. Turn off the water supply.

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

3. Disconnect the old pipes.

Use the pipe cutter to cut the old pipes about 6 inches from the base of the sink. Then, use the pipe wrench to loosen the nuts that connect the pipes to the sink and faucet. Once the nuts are loose, you can remove the old pipes.

4. Clean the area.

Use the putty knife to scrape away any old caulk or sealant from the area where the new pipes will be installed. Then, wipe the area clean with a damp cloth.

5. Install the new pipes.

Start by wrapping the threads of the new pipes with Teflon tape. Then, screw the pipes into the sink and faucet. Tighten the nuts until they are snug, but do not overtighten them.

6. Connect the water supply.

Turn on the water supply to the sink. Check for leaks around the connections. If you find any leaks, tighten the nuts until the leaks stop.

7. Caulk around the pipes.

Use the caulk gun to apply a bead of caulk around the base of the sink where the pipes enter. This will help to prevent leaks and keep the area watertight.

8. Turn on the water and check for leaks.

Turn on the water and check for leaks. If you find any leaks, tighten the nuts or caulk the area until the leaks stop.

Replacing the pipes under a bathroom sink is a 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.