How to Fix a Leaking Hose Bib: Packing Nut, Washer, and Replacement

An outdoor hose bib develops two distinct types of leaks, and diagnosing which one you have determines the fix.

Spout drip: Water drips from the end of the spout when the handle is fully closed. This means the rubber seat washer inside the valve stem has worn out and is no longer sealing against the valve seat.

Handle base leak: Water seeps out around the handle stem, pooling at the base of the handle or running down the faucet body. This means the packing — the seal around the stem — has failed or the packing nut has loosened.

Both leaks are straightforward repairs. In most cases you can fix either one without shutting off the main water supply.

Fix 1: Tighten the Packing Nut

If water is leaking from around the base of the handle, try this first before any disassembly.

The packing nut is the hexagonal nut immediately behind the handle on the faucet body. It compresses the packing material around the valve stem and keeps water from escaping.

1. Turn the hose bib handle fully closed.
2. Look for the hex nut just behind the handle — on most hose bibs it is 3/4” to 1”.
3. Using an adjustable wrench or channel-lock pliers, turn the nut clockwise (righty-tighty) a quarter turn.
4. Restore water and check. If still leaking, try another quarter turn.

Do not overtighten — if the handle becomes difficult to turn, you have gone too far. Back off slightly until the handle turns easily and the leak stops.

If tightening does not stop the leak, the packing material itself has deteriorated and needs to be replaced.

Fix 2: Replace the Packing Washer

A hose bib repair kit includes the seat washer (for spout drips) and packing material (for handle leaks). Get one before you start — they are under $10 at any hardware store.

Tools needed:

• Adjustable wrench or channel-lock pliers
• Phillips and flathead screwdriver
• Replacement seat washer and packing (from a repair kit)

Steps:

1. Close the hose bib handle fully. If you have an interior shutoff for the line, close it. Open the hose bib to drain any residual pressure.
2. Remove the handle: look for a screw on top of the handle (under a decorative cap) or at the base. Remove it and pull the handle off the stem.
3. Unscrew the packing nut counterclockwise with a wrench. Pull it off.
4. Pull the valve stem straight out of the faucet body. It may need to be rotated counterclockwise as you pull — it threads out like a screw.
5. At the bottom tip of the valve stem you will see a rubber seat washer held by a brass screw. Remove the screw, pull out the old washer, and press in the new one from the repair kit. Reinstall the screw.
6. While you have the stem out, wrap new packing string around the stem just above the threads, or replace the packing washer if the kit includes one.
7. Thread the valve stem back into the faucet body clockwise. Thread on the packing nut and tighten snugly — not overtight.
8. Reinstall the handle.
9. Restore water and test.

A slow spout drip is almost always a failed seat washer. If the washer looks fine but the faucet still drips after replacement, the valve seat inside the faucet body may be pitted or corroded. Valve seat repair tools exist but at that point a full hose bib replacement is usually the better move.

Fix 3: Replace the Hose Bib

When to replace rather than repair:

• The faucet body is cracked or corroded
• Spout drip persists after washer replacement (pitted seat)
• You want to upgrade to a frost-proof model
• The faucet is more than 15-20 years old and has had repeated issues

Choosing a replacement: A frost-proof hose bib is worth the modest upgrade in cost ($15-35 vs. $8-15 for a standard bib). The long stem keeps the valve mechanism inside the warmer wall cavity, dramatically reducing freeze risk.

Match the thread size of your existing bib — most are 3/4” NPT (national pipe thread). Measure the wall depth to choose the right stem length for a frost-proof model (4”, 6”, 8”, 10”, and 12” are common).

Tools and materials:

• Pipe wrench (10” or 14”)
• PTFE (Teflon) tape
• Pipe joint compound (optional, for extra sealing)
• New hose bib

Replacement steps:

1. Shut off the main water supply to the house. Open a lower faucet to drain the lines.
2. From inside, locate where the hose bib pipe stub comes through the wall. Have towels ready — there will be residual water.
3. Using a pipe wrench on the faucet body (not the pipe), turn counterclockwise to unscrew the old hose bib. You may need a second wrench on the pipe stub to hold it steady and prevent it from rotating and breaking solder joints.
4. Inspect the pipe stub threads for corrosion or damage. Clean threads with a wire brush.
5. Wrap the new hose bib’s male threads with three full layers of PTFE tape, wrapping clockwise (so the tape doesn’t unwind as you thread it in).
6. Thread the new hose bib onto the stub by hand until you feel resistance, then tighten with the pipe wrench. Two to three full turns past hand-tight is typical — stop when the faucet body faces down slightly (between 4 and 6 o’clock position) so it drains properly.
7. Restore the main water and check for leaks at the connection. If leaking slightly, tighten another half turn.

How to Winterize a Hose Bib

Winterizing prevents the most common and costly outdoor faucet failure — a burst pipe.

1. Disconnect hoses: Before the first hard frost, disconnect any garden hoses from the bib. A connected hose traps water that expands when it freezes and can split the faucet body or supply pipe.
2. Close the interior shutoff: If your hose bib line has a dedicated shutoff valve inside (often near the foundation or in a utility room), close it.
3. Open the bib to drain: After closing the interior shutoff, open the outdoor hose bib handle to let the water between the shutoff and the bib drain out. Leave the bib in the open position so any remaining moisture can escape. Close it again once drained.
4. Install a faucet cover: An insulated outdoor faucet cover ($5-10) adds a layer of protection. They install over the bib and trap ambient heat from the wall. Not a substitute for draining, but a good supplement.

If you have a frost-proof hose bib and no interior shutoff, the most important step is removing hoses before a freeze. The long stem keeps the valve away from the cold exterior, but a hose left on defeats the design by trapping water at the valve.

Related Reading

• How to Fix a Leaky Outdoor Faucet
• How to Fix a Leaky Faucet
• How to Winterize Your Home