How To Install Bathroom Sink Drain

Installing a bathroom sink drain is a relatively simple plumbing project that can be completed in a few hours. By following these instructions, you can easily replace a worn-out or damaged drain and restore your sink to proper working order.

Tools and Materials

New bathroom sink drain
Adjustable wrench
Plumber's putty
Flashlight
Safety glasses

Step 1: Prepare the Work Area

Before you begin working, turn off the water supply to the sink. To do this, locate the shut-off valves under the sink and turn them clockwise to close them. Then, open the faucet to release any remaining water from the pipes.

Once the water is turned off, place a few towels around the base of the sink to catch any water that may spill. Then, put on your safety glasses.

Step 2: Remove the Old Drain

Use the adjustable wrench to loosen the locknut that holds the old drain in place. Be careful not to overtighten the wrench, as this could damage the sink.

Once the locknut is loosened, you can remove the old drain by pulling it straight up. You may need to use a flashlight to see the drainpipe behind the sink.

Step 3: Apply Plumber's Putty

Apply a bead of plumber's putty around the base of the new drain. The plumber's putty will help to create a watertight seal between the drain and the sink.

Step 4: Install the New Drain

Insert the new drain into the sink hole. Make sure that the rubber gasket on the drain is seated properly against the sink surface.

Tighten the locknut onto the drain by hand. Then, use the adjustable wrench to tighten the locknut further. Be sure to tighten the locknut until it is snug, but do not overtighten it.

Step 5: Reconnect the Water Supply

Turn on the water supply to the sink by turning the shut-off valves counterclockwise. Open the faucet to check for leaks.

If you notice any leaks, turn off the water supply and retighten the locknut. Once the locknut is tight, turn on the water supply again and check for leaks.

Step 6: Clean Up

Once the drain is installed and there are no leaks, remove the towels from around the base of the sink. Wipe up any excess plumber's putty. Your bathroom sink drain is now successfully installed!