Master the art of installing a new bathroom faucet

How to Replace a Bathroom Faucet | Ask This Old House · 3:11 · Video: This Old House · Watch at the source

In short: Plumbing expert Richard Trethewey demonstrates the essential steps for replacing a bathroom faucet. This guide provides a practical walkthrough to help you manage water lines and ensure a watertight seal for your sink.

The process begins by shutting off the water supply, either by hand or with a specialty wrench, taking care not to over-torque the connections. To prevent messes, use a rag or pan to catch drips while relieving line pressure by turning on the faucet.

After disconnecting the supply lines—using a multi-purpose tool if access is limited—the old faucet is removed. To install the new fixture, apply Plumber’s Putty around the base to fill sink imperfections and create a watertight seal before tightening the mounting nuts and cleaning up excess material.

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