Step-by-Step Guide to Repairing a Leaking Bathroom Faucet Without Replacing It

If you notice water dripping from your bathroom faucet, it can waste water and increase your bills. Fortunately, you can often fix a leaky faucet without replacing the entire fixture. This guide provides a safe and thorough process to help you do just that.

Tools and Materials

• Adjustable wrench
• Screwdrivers (Phillips and flathead)
• Replacement washers and O-rings (specific to your faucet model)
• Plumber’s grease (non-toxic, suitable for potable water)
• Towel or rag
• Bowl or bucket

Step 1: Turn Off the Water Supply

1. Locate the shut-off valves under your sink.
2. Turn the handles clockwise until they stop.
3. Open the faucet to drain any remaining water and relieve pressure.

Step 2: Plug the Drain

Use a sink plug or a rag to block the drain. This prevents small parts from falling in during the repair.

Step 3: Remove the Faucet Handle

1. Look for a screw securing the handle. It may be hidden under a decorative cap that can be pried off with a flathead screwdriver.
2. Unscrew the handle and lift it off gently.

Step 4: Access the Valve

1. Use an adjustable wrench to unscrew the packing nut beneath the handle.
2. Carefully pull out the valve stem or cartridge, noting its orientation for reassembly.

Step 5: Inspect and Replace Washers and O-Rings

1. Check the rubber washer at the bottom of the valve stem and any O-rings around the stem.
2. If they are worn, cracked, or hardened, remove them carefully.
3. Replace them with new washers and O-rings matching the original size and type.
4. Apply a light coat of plumber’s grease to the O-rings before reinstalling. Avoid over-applying.

Step 6: Reassemble the Faucet

1. Insert the valve stem or cartridge back into the faucet body in its original orientation.
2. Hand-tighten the packing nut, then snug it with a wrench. Do not over-tighten.
3. Replace the handle and secure it with its screw and decorative cap.

Step 7: Test the Faucet

1. Remove the drain plug or rag.
2. Turn the water supply valves back on slowly.
3. Open and close the faucet several times, checking for leaks around the handle and spout.
4. If leaks persist, recheck washer and O-ring placement and ensure all connections are snug but not over-tightened.

When to Call a Professional

If your faucet continues to leak after replacing washers and O-rings, or if you find damaged metal components, it’s safest to contact a licensed plumber.

Conclusion

Repairing a leaking bathroom faucet is often a straightforward DIY project. With careful attention and basic tools, you can stop the drip and extend your faucet’s life without an expensive replacement.