How to Replace a Bathroom Sink Faucet
- 1). Turn off the hot and cold water supply valves on the wall behind the sink or under the vanity cabinet. Open the faucet handles to relieve pressure in the faucet.
- 2). Disconnect the hot and cold water supply lines from both the water supply valves and the inlet pipes on the faucet itself.
- 3). Reach up under the sink with the basin wrench and loosen and remove the nuts on the threaded sections of pipe on the faucet. Avoid inadvertently tightening the nuts, as this can damage the sink.
- 4). Lift the faucet to remove it from the sink. Remove any plumber's putty with a putty knife and wipe the sink clean.
- 5). Fit the gasket to the bottom of the new faucet or place a bead of plumber's putty around the bottom edge of the faucet if it does not come with a gasket.
- 6). Insert the inlet pipes through the holes in the sink. Press the faucet down so the gasket or plumber's putty contacts the sink surface.
- 7). Thread the nuts onto the inlet pipes on the underside of the faucet. Carefully tighten the nuts with the basin wrench until the gasket seals to the sink surface or the plumber's putty squeezes out from under the faucet. Scrape and wipe away any excess putty.
- 8). Wrap the ends of the inlet pipes with Teflon tape. Connect the water supply lines to the inlet pipes. Connect the other end of the water supply lines to the hot and cold water supply valves.
- 9). Remove the aerator from the faucet. Turn the hot and cold water supply valves on. Turn on the faucet to test for any leaks and flush the faucet of any debris. Replace the aerator on the faucet.
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