Replace a Bathroom Faucet

Typical installation steps are below, but always follow the faucet manufacturer’s directions for specific installation instructions..


Put the faucet in the mounting holes.

Most installations begin with installing the gasket on the bottom of the faucet. Some require sealant or plumber’s putty. Then put the faucet through the mounting holes in the sink and tighten the mounting nuts.

Securing the faucet with the setscrew.

Not all faucets come preassembled so you might have to attach the handles. It’s easy. Slip the guide ring onto the bottom of the handle, position it on the faucet base, and secure with the setscrew. A setscrew is the tiny screw on the underside of the handle. Your faucet probably came with a hex wrench to tighten it.

Screw the nut on the drain body.

Next move on to the drain. Screw the nut all the way down on the drain body and push the gasket over it. Some gaskets are threaded and simply screw into place.

Apply silicone under the flange.

Apply just a little bit of silicone (some manufacturers recommend plumber’s putty) under the flange. Position the drain body on the bottom of the sink — making sure the pivot hole is facing the back — and screw the flange on from the top side.

Tighten the nut and gasket.

Underneath, tighten the nut and gasket. On the top, use mineral spirits to clean up any excess silicone.

Secure the lift rod to the strap.

Install the drain rod next. Unscrew the pivot nut on the drain body, insert the horizontal rod through the hole in the stopper, and replace the nut. Push the horizontal rod down and secure the lift rod to the strap with the screw. Test the lift rod.

Reconnect the supply lines.

Reconnect the supply lines to the faucet. If your sink is already in place, use a basin wrench to reach the faucet shanks.

Remove the aerator from the faucet.

Flush the faucet by removing the aerator. This gets rid of debris or sediment in the faucet. Some faucets include a handy little tool to unscrew the aerator. When you’re done, keep it inside your vanity or with the rest of your tools. Turn on the hot and cold water for about a minute. Check all the connections for leaks and retighten if necessary. Screw the aerator back on and you’re done.


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