Fixing Bathroom Sink Faucet Leaking

Fixing a Leaking Bathroom Sink Faucet

A dripping bathroom faucet can be a persistent annoyance and a significant source of wasted water. Fortunately, most leaks stem from common issues that can be addressed with basic plumbing knowledge and readily available tools. This article provides a step-by-step guide to diagnosing and resolving the most frequent causes of leaky bathroom faucets.

1. Identifying the Type of Faucet

Before beginning any repair, it is crucial to identify the type of faucet. Different faucet designs require distinct approaches. Common types include compression, cartridge, ball, and ceramic disc faucets. Compression faucets have separate hot and cold handles and typically use rubber washers to control water flow. Cartridge faucets, on the other hand, use a cartridge containing all the working parts. Ball faucets have a single handle that controls temperature and flow with a ball-shaped mechanism. Ceramic disc faucets are generally considered the most durable and reliable, utilizing ceramic discs to regulate water flow.

2. Gathering the Necessary Tools

Having the proper tools on hand streamlines the repair process. Common tools required for faucet repair include an adjustable wrench, Phillips and flathead screwdrivers, pliers, a basin wrench, penetrating oil, plumber's putty, and replacement parts specific to the faucet type. It’s advisable to lay down a towel beneath the sink to protect the basin and collect any dropped parts.

3. Turning Off the Water Supply

The most critical first step is shutting off the water supply to the faucet. Locate the shut-off valves under the sink. These are typically small handles on the supply lines leading to the faucet. Turn both the hot and cold water valves clockwise until they are fully closed. Turn on the faucet to ensure the water supply is completely off. If the faucet continues to drip, the shut-off valves may need to be replaced.

4. Addressing Leaks from the Handle

Leaks originating from the handle often indicate a problem with the O-rings or packing nuts. To access these components, remove the handle screw, typically located under a decorative cap on the handle. Once the screw is removed, the handle can be pulled off. Inspect the O-rings and packing nut for wear and tear. Replace any damaged parts. When reassembling, apply a small amount of plumber's grease to the O-rings to ensure a proper seal.

5. Repairing Leaks from the Spout

If the leak originates from the spout, the problem likely lies within the faucet body. For compression faucets, this usually involves replacing the O-rings and washers inside the valve stem. For cartridge faucets, the entire cartridge may need to be replaced. Ball faucets require disassembling the ball assembly and replacing worn-out springs, seats, and O-rings. Ceramic disc faucets rarely leak from the spout, but if they do, the entire cartridge assembly typically needs replacement. Refer to the manufacturer's instructions for specific disassembly and reassembly procedures.

6. Dealing with Leaks from the Base of the Faucet

Leaks at the base of the faucet often indicate a problem with the mounting nut or the supply lines. Tighten the mounting nut using a basin wrench. If the leak persists, the supply lines may be corroded or damaged. Replace the supply lines as needed, ensuring proper connection and tightening to avoid future leaks.

7. Maintaining Your Faucet

Regular maintenance can prevent future leaks and extend the life of your faucet. Periodically inspect the faucet for any signs of wear and tear. Replace worn-out parts promptly. Avoid using excessive force when turning the handles, as this can damage internal components. Cleaning the aerator regularly can prevent mineral buildup, which can restrict water flow and contribute to leaks. By following these preventative measures, you can keep your bathroom faucet functioning efficiently and prevent costly repairs in the future.

While these steps cover the most common causes of leaky bathroom faucets, complex issues may require the expertise of a qualified plumber. Consulting a professional is always advisable if you are unsure about any aspect of the repair process. Remember to always prioritize safety and turn off the water supply before attempting any repair.