How To Install A Bathroom Sink Drain Pipe

Installing a bathroom sink drain pipe is a relatively simple plumbing project that can be completed in a few hours. By following these step-by-step instructions, you can save yourself the cost of hiring a plumber. Before you begin, gather the necessary tools and materials:

Adjustable wrench
Plumber's putty
Teflon tape
Slip joint pliers
New drain pipe
Bucket

Step 1: Remove the old drain pipe

Place a bucket under the sink to catch any water that may leak out. Using an adjustable wrench, loosen the nuts that hold the old drain pipe in place. Be careful not to overtighten the nuts, as this can damage the pipe. Once the nuts are loose, remove the old drain pipe.

Step 2: Clean the drain hole

Use a rag to clean the drain hole in the sink. Remove any debris or old sealant that may be present. Once the drain hole is clean, apply a thin bead of plumber's putty around the edge of the drain hole.

Step 3: Install the new drain pipe

Insert the new drain pipe into the drain hole. Make sure that the rubber washer on the drain pipe is seated properly against the sink. Tighten the nuts on the drain pipe until they are snug. Do not overtighten the nuts, as this can damage the pipe.

Step 4: Connect the drain pipe to the trap

The trap is the curved pipe that connects the drain pipe to the main drain line. Slip the drain pipe into the trap and tighten the slip nut until it is snug. Do not overtighten the slip nut, as this can damage the trap.

Step 5: Test the drain

Turn on the water and check for leaks. If you see any leaks, tighten the nuts or slip nut until the leak stops. Once you are satisfied that the drain is leak-free, you can turn off the water.

Step 6: Finish the installation

Apply a bead of silicone caulk around the base of the drain pipe. This will help to prevent leaks and give the installation a finished look. Allow the caulk to dry completely before using the sink.