Hose Bib Leaking
A hose bib — also called an outdoor faucet, sillcock, or outdoor spigot — leaks in two distinct ways: a drip from the spout when fully closed (worn seat washer) or water seeping around the handle base (loose packing nut or degraded stem O-ring). Both repairs cost under $10 in parts and take 20–45 minutes. This guide also covers the difference between frost-free and standard sillcock designs, stem repair, and essential winterization steps to prevent freeze damage.
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Common Symptoms
- Continuous drip or trickle from the spout after the handle is fully closed
- Water seeping or pooling around the base of the handle when the faucet is on
- Visible mineral crust or corrosion on the packing nut behind the handle
- Faucet requires increasing force to stop flow over time
Most Likely Causes
- 1
Worn Seat Washer (Spout Drip)
The seat washer is a rubber disc at the tip of the stem that presses against the valve seat to stop flow when the handle is closed. After years of use the washer compresses, hardens, or cracks and can no longer make a watertight seal. Replacing this washer (under $2) stops a spout drip completely. Bring the old washer to the hardware store for an exact size match.
- 2
Loose Packing Nut (Handle-Base Leak)
The packing nut compresses graphite or rubber packing material around the stem to prevent water from traveling up and out around the handle. Vibration and thermal cycling gradually loosen the nut. Tightening it clockwise a quarter-turn with an adjustable wrench often stops a handle-base leak instantly — without removing any parts or replacing any components.
- 3
Degraded Stem O-Ring or Packing
When packing nut tightening does not stop the handle-base leak, the packing material or stem O-ring itself has worn out and must be replaced. This requires removing the handle and stem to access the O-ring groove or packing gland. O-rings and packing kits cost $3–$8 at any hardware store and restore a proper seal.
- 4
Damaged Stem or Valve Seat (Less Common)
A corroded or scored valve seat (the brass surface the washer presses against inside the faucet body) prevents any washer from sealing properly. A seat wrench can recut a lightly damaged seat. A bent or cracked stem cannot create proper packing compression and needs replacement. If the faucet has freeze damage, the stem itself may be cracked — the entire hose bib will need replacement.
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Quick DIY Checks
Always turn off the indoor supply valve before disassembling any part of the hose bib stem. Attempting to remove the packing nut or stem with supply water pressurized can cause a sudden uncontrolled spray of water. Even a brief open-line event can cause significant water damage to interior wall cavities behind the faucet.
Inspect the faucet body closely each spring for hairline cracks from freeze damage. Press a dry paper towel against the brass body with the water on — any wetness indicates a crack that cannot be repaired; the entire hose bib needs replacement. A frost-free sillcock with a connected hose left on over winter freezes exactly like a standard sillcock — always disconnect hoses before the first freeze regardless of faucet type.
- 1Step 1 — Determine which type of leak you have: with the faucet closed and water on, observe carefully. A drip from the end of the spout = worn seat washer (stem-tip repair). Water seeping or wet around the handle base = packing nut or stem O-ring issue. Identifying the right failure type saves time and ensures you fix the correct component on the first try.
- 2Step 2 — Try tightening the packing nut first (handle-base leaks): the packing nut is the large hex nut directly behind the handle, visible when you look at the faucet head-on. Use an adjustable wrench to turn it clockwise just a quarter-turn while the water is still on — you can do this without shutting off the water supply. Check if the seeping stops. If it does, you are done. If the leak persists or the packing nut is already fully tight, move to the next step.
- 3Step 3 — Shut off the indoor supply valve: the supply valve for an outdoor hose bib is almost always inside the house — in the basement, crawl space, or utility closet on the pipe running to the exterior wall where the faucet is mounted. Close it fully clockwise. Confirm by opening the outdoor faucet: you should get only a brief drip from residual water, not a sustained flow.
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Repair vs Replace
A hose bib leak caused by a worn washer or loose packing nut is one of the easiest and cheapest plumbing repairs — under $5 in parts, no specialized tools, 20–30 minutes. Even a full frost-free sillcock swap is a practical DIY project for anyone comfortable cutting water supply lines. The only scenarios requiring a plumber are freeze damage to the supply pipe inside the wall (requires opening drywall) or if the faucet is soldered directly to copper pipe without a union fitting.
Est. Repair Cost
$5–$20 (washer/O-ring/packing kit); $25–$50 (frost-free sillcock upgrade)
Est. Replacement Cost
$150–$350 for a plumber to replace an outdoor hose bib
Recommended Tools & Parts
- Buy on Amazon →
Homewerks Frost-Free Anti-Siphon Sillcock (1/2-inch FIP, 8-inch stem)
Lead-free brass frost-free outdoor hose bib with 8-inch stem length. Built-in anti-siphon (vacuum breaker) prevents backflow contamination. Positions the shutoff point inside the warm wall to protect against freezing. Connects to 1/2-inch female iron pipe thread (FIP) — the most common residential connection size.
$20–$35
- Buy on Amazon →
Danco Outdoor Faucet Repair Kit
Universal repair kit containing multiple seat washer sizes (00, 0, 1, 2, 3), packing washers, O-rings, and stem screws for most residential hose bibs and sillcocks. Covers Moen, American Standard, Delta, and generic outdoor faucets. Eliminates the need to measure and source individual parts.
$6–$12
- Buy on Amazon →
Klein Tools Adjustable Wrench 10-inch
Heavy-duty adjustable wrench with a precision machined jaw for gripping hex packing nuts and supply fittings without slipping. The 10-inch size provides enough torque for stubborn packing nuts on outdoor faucets without risking overtightening damage on smaller components.
$20–$30
Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.
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Related Repair Guides
This section combines editorial `relatedSlugs` from the article source with metadata-based matches so each guide links deeper into the repair library.
Outdoor Faucet Leaking
Outdoor faucet dripping or leaking at the handle? A worn packing washer or O-ring is almost always the cause — a $10 fix that takes less than an hour.
Read guide →Pipe Burst from Freezing — How to Stop the Leak and Repair the Damage
Burst pipe from freezing temperatures? Act fast: shut off the main water supply, drain the lines, then repair with a slip coupling or pipe repair clamp — most DIY repairs run $20–$80.
Read guide →Dripping Faucet Repair — Ball, Cartridge, Ceramic Disc & Compression Fix Guide
A faucet dripping once per second wastes ~3,000 gallons/year and adds $15–25 to your water bill. Covers all four faucet types — compression, ball, cartridge, and ceramic disc — with exact part numbers and step-by-step procedures.
Read guide →Outdoor Faucet Not Working: Hose Bib Repair Guide
Outdoor faucet with no water, low pressure, or a drip from the stem? This guide covers freeze damage inspection, packing nut and washer replacement, vacuum breaker failure, and when to replace the whole hose bib.
Read guide →Sink Faucet Dripping
Dripping faucet wasting water and driving you crazy? In most cases a worn cartridge or O-ring is the culprit — a $10–$25 part and 30–60 minutes fixes it permanently.
Read guide →Shower Faucet Dripping — Fix a Leaky Shower Valve Without Calling a Plumber
Shower faucet dripping even when off? A worn cartridge or valve seat is almost always the culprit — a $15–$40 part and 45–90 minutes stops the drip for good.
Read guide →Keep Exploring
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Frequently Asked Questions
- What is the difference between a frost-free sillcock and a standard hose bib?
- A standard hose bib has its shutoff valve at the exterior wall — the entire faucet body fills with water when open. In freezing weather, any water left in the body freezes and can crack it. A frost-free sillcock (anti-siphon sillcock) has a long brass stem (8–12 inches) that extends into the wall — the actual shutoff happens inside the warm wall cavity, so no water remains in the exposed outdoor portion when the handle is closed. Frost-free sillcocks prevent freeze damage, but only if you disconnect garden hoses before winter. A connected hose creates back pressure that traps water in the faucet body, defeating the frost-free design.
- My hose bib leaks around the handle even after I tighten the packing nut — what next?
- If tightening the packing nut does not stop the handle-base leak, the packing material or stem O-ring has worn out and needs replacement. Shut off the indoor supply valve, remove the handle, unscrew and remove the packing nut, and pull the stem out of the faucet body. You will see either an O-ring in a groove on the stem, a graphite packing ring, or both. Replace what you find — bring the stem to the hardware store for an O-ring size match if needed. Reassemble and test.
- Can I repair a hose bib stem, or do I need to replace the whole faucet?
- In most cases you can repair the stem: replace the seat washer (stops spout drip), replace the stem O-ring or packing (stops handle-base leak), or use a seat wrench to recut a lightly scored valve seat. Replace the entire faucet when: the faucet body is cracked from freeze damage, the brass body is severely corroded, the stem itself is bent or cracked, or you want to upgrade from a standard to a frost-free sillcock. A new frost-free sillcock costs $20–$35 and installs in 30–60 minutes — often the smarter choice for faucets over 15 years old.
- How do I winterize a hose bib?
- Before the first hard freeze: (1) disconnect and drain any attached garden hose — a connected hose prevents the faucet from draining. (2) Close the indoor shutoff valve for that hose bib (located on the pipe inside the house running to the exterior wall). (3) Open the outdoor faucet handle to drain any water remaining in the line — let it drip dry for a minute or two, then leave the handle in the closed position. For a frost-free sillcock, steps 1 and 3 are the critical steps — the valve closes inside the warm wall automatically, but residual water between the valve and the open handle tip needs to drain. If your home has no indoor shutoff for outdoor faucets, add one — it costs $20–$40 in parts and protects the entire outdoor faucet circuit.