Connecting a bathroom sink’s drain pipe to your home’s drain plumbing is a fast and easy DIY project. No matter what type of sink you purchase, the drain and water-supply connections are generally installed in this way:

A sink is connected to the drain plumbing by a tailpiece that's tightened to the drain flange.
A sink is connected to the drain plumbing by a tailpiece that’s tightened to the drain flange. ©Andry_Popov / Shutterstock.com

Hand-tighten a female adapter onto the drain stub-out at the wall.

Slide slip nuts onto the drain arm and the sink’s tailpiece, and tighten the connection at the base of the sink.

Connecting a sink drain and water supply is generally an easy job for a do-it-yourselfer.
Connecting a sink drain and water supply is generally an easy job for a do-it-yourselfer. ©Linerpics / Shutterstock.com

Fit a P-trap in place and tighten the slip nuts by hand. Connect flexible water-supply tubes onto the faucet’s tailpieces, and route them to the shut-off valves.

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Tighten coupling nuts with an adjustable wrench. Remove the faucet aerator, and turn on the water.

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sink shut off valve
Turn on the water to the sink at the shutoff valves beneath the sink. On is counterclockwise. LightWaveMedia / Shutterstock.com

Then check the shutoff valves and pipe joints for leaks, and then turn on the faucet to check for leaks in the drain assembly. Replace the aerator and you’re done!

Here is a good video that walks you through the process of bathroom sink drain replacement. Watching this will help clarify the steps you take for installation.

 

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About Don Vandervort
Don Vandervort has developed his expertise for more than 30 years, as Building Editor for Sunset Books, Senior Editor at Home Magazine, author of more than 30 home improvement books, and writer of countless magazine articles. He appeared for 3 seasons on HGTV’s “The Fix,” and served as MSN’s home expert for several years. Don founded HomeTips in 1996. Read more about Don Vandervort