How Do You Fix a Leaky Exterior Water Faucet Yourself This Weekend?

Learning how to fix a leaky exterior water faucet is one of the most satisfying, money-saving DIY plumbing wins you can pull off in an afternoon — no plumber, no drama. That drip at the spigot, hose bib, or sillcock is almost always a worn rubber washer or a loose packing nut, not a broken pipe. Below, we’ll walk through exactly how to diagnose where the leak is coming from, which parts to buy, and the step-by-step repair for both standard hose bibs and frost-proof faucets — plus when to stop and call a pro.

An exterior water faucet goes by a few names — hose bib, spigot, sillcock, outdoor tap — but they all do the same job and they all fail in the same predictable ways. The good news: the fix is nearly identical to fixing an indoor faucet, and if you’ve ever done a faucet handle replacement yourself, you already have most of the skills you need.

Where Is the Leak Actually Coming From — the Handle or the Spout?

Before you touch a wrench, figure out where the water is escaping, because the location tells you which part failed. There are three distinct leak points on an exterior faucet, and each has its own fix.

• Dripping from the spout when the faucet is fully closed → the rubber stem washer (also called the bibb washer or seat washer) is worn, or the brass seat it presses against is pitted.
• Leaking from around the handle when the water is running → the packing nut is loose or the packing washer / O-ring behind it has hardened.
• Water spraying from the pipe where it enters the wall, or dripping only in cold weather → a cracked frost-proof stem or a burst pipe from freeze damage. This one is more serious.

Do a quick test: with the hose disconnected, turn the faucet fully on and watch the handle area. Then turn it fully off and watch the spout. Wherever the water shows up is your culprit. Roughly 70% of outdoor faucet leaks are a bad stem washer at the spout — the cheapest and easiest repair of the bunch.

What Tools and Parts Do You Need to Fix an Outdoor Faucet Leak?

You need very little: an adjustable wrench, a screwdriver, and a cheap washer/O-ring assortment. Total cost is usually under $15, and most homeowners already have everything but the washers.

One tip that saves a second trip to the hardware store: remove the old stem and washer first, then bring them with you. Outdoor faucet washers come in maddeningly similar sizes (0, 00, 1L, etc.), and matching the physical part beats guessing every time. If your faucet is a frost-proof sillcock, note the brand stamped on it (Woodford, Prier, Mansfield, Arrowhead) — those use proprietary stems, not generic washers.

How Do You Fix a Standard Hose Bib That Drips From the Spout?

Shut off the water, remove the stem, replace the rubber washer at its tip, and reassemble — that’s the whole repair. Here’s the full sequence for a classic multi-turn hose bib (the compression-style faucet with a round handle).

1. Shut off the water supply. Find the shutoff valve for the outdoor line inside the house — often near the water meter, in the basement, or in a crawlspace. If you can’t find a dedicated one, shut off the main. Then open the faucet to drain the remaining pressure.
2. Remove the handle. Unscrew the screw on top of the handle and pull it off. If it’s corroded, a little penetrating oil helps.
3. Loosen the packing nut / bonnet. With your wrench, turn the large hex nut counter-clockwise. Hold the faucet body steady with a second wrench so you don’t twist the pipe in the wall.
4. Unscrew the stem. Once the nut is loose, the whole stem assembly threads out (sometimes you re-attach the handle to turn it out). Inspect it.
5. Replace the stem washer. At the very end of the stem is a rubber washer held by a small brass screw. Unscrew it, pop off the flattened, cracked washer, and press on the exact same size replacement. Add a dab of plumber’s grease.
6. Check the seat. Shine a light into the faucet body. If the brass valve seat looks pitted or rough, that’s why washers keep failing — dress it with a seat-grinding tool or replace it with a seat wrench (about $10).
7. Reassemble. Wrap the stem threads and packing nut threads with Teflon tape, screw everything back, snug the packing nut, reattach the handle, and slowly turn the water back on.

Turn it on and off a couple of times and watch for drips. Nine times out of ten, that fresh washer stops the leak cold. This is the same washer-and-seat logic behind most compression faucet drips — if you want the deeper theory on why valves seep, our guide on why a widespread faucet keeps dripping breaks down the seat-and-washer relationship in detail.

How Do You Fix a Leak Around the Handle (Not the Spout)?

If water only sneaks out around the handle while the faucet is running, you don’t need to touch the stem washer at all — you need to tighten or replace the packing. Start with the easy move: with the water on, gently tighten the packing nut about a quarter turn clockwise. Often that alone re-compresses the packing and stops the seep.

If tightening doesn’t work — or the nut is already snug — the packing washer, packing string, or O-ring behind it has hardened with age. Shut off the water, remove the stem as described above, and look for a small rubber O-ring or a washer just below the packing nut. Replace it with a matching one from your O-ring kit, coat it with plumber’s grease, and reassemble. Don’t over-tighten on reassembly; the nut should be firm enough to seal but loose enough that the handle still turns smoothly.

How Is a Frost-Proof Sillcock Different to Repair?

A frost-proof (frost-free) sillcock looks like a normal spigot from outside, but its shutoff washer sits 6–14 inches back inside the warm wall, so the water valve never freezes. That changes the repair: the leak point is at the far end of a long stem, and the fix is usually to pull and replace that entire stem — you can’t just swap a $2 washer at the visible end.

Here’s the key clue: a frost-proof faucet that only drips or won’t shut off when running (and where water seems to come out slowly after you close it) almost always has a bad seat washer at the inner tip of the stem. To fix it:

1. Shut off the water and open the faucet to drain it.
2. Remove the handle screw and handle, then unscrew the packing nut/bonnet at the face of the faucet.
3. Pull the long stem straight out through the front — sometimes it’s 12 inches long.
4. At the inner end, replace the seat washer (and its screw). For most brands, it’s easier and more reliable to buy the brand-matched replacement stem and swap the whole thing.
5. Coat the stem O-rings with plumber’s grease, slide it back in, tighten the packing nut, and restore water.

One critical detail: a frost-proof sillcock must be installed with a slight downward pitch toward the outside so it self-drains, and you must disconnect hoses in winter. A hose left attached traps water in the tube, it freezes, and the copper pipe splits inside the wall — a leak you won’t see until spring. If your faucet cracked from a freeze, that’s a pipe repair, not a washer job, and it’s worth calling a plumber.

Should You Repair or Just Replace the Whole Faucet?

Repair if the body is solid and only the washer or packing failed; replace if the faucet is cracked, the threads are stripped, the seat is destroyed, or you’ve rebuilt it twice already. A new hose bib is only $10–$25, and a quality frost-proof sillcock runs $25–$60, so there’s a point where a fresh unit beats endlessly chasing washers.

If you decide to swap the whole unit, the removal step mirrors indoor work — you unthread the old faucet and seal the new one with Teflon tape. The same careful, don’t-crack-the-fitting approach we cover in removing an old faucet without a plumber applies here: support the pipe, don’t force it, and use two wrenches so you never twist the plumbing behind the wall.

Why Does the Same Outdoor Faucet Keep Leaking After You Fix It?

A repair that fails within weeks almost always means the valve seat is damaged, not the washer. When a brass seat gets pitted, corroded, or scored, even a brand-new rubber washer can’t form a watertight seal against it — the rough surface chews through the washer again in short order. Dress the seat with a seat-grinding tool or replace it, and the fix will finally hold.

Other repeat-leak causes worth checking:

• Wrong washer size. A washer that’s slightly too small or too thin won’t seat properly. Match the original exactly.
• Over-tightened handle. Cranking the handle shut to stop a drip actually crushes and deforms the washer faster. Close it snug, not gorilla-tight.
• Hard water mineral buildup. Scale on the stem and seat prevents a clean seal. This is the same mineral behavior that clogs aerators — our piece on why aerators still clog even with soft water explains how sediment sneaks past treatment systems.
• Cartridge-style outdoor faucet. Some newer sillcocks use a ceramic cartridge instead of a washer. If yours does, you replace the cartridge, not a washer — different part, same idea.

A Quick Word on Doing This Safely and Correctly

Always confirm the water is fully off before you open the packing nut — an outdoor line under pressure will spray forcefully the second the stem clears. Keep a bucket and towel handy, and never use a pipe wrench on the thin faucet body where it can crush the metal. If you hit a soldered joint, a valve buried in the wall, or a pipe that split from freezing, that’s the line where DIY stops and a licensed plumber starts. There’s no shame in it — a $150 service call beats a flooded wall cavity.

Author note: This guide was written by the vigacc product and technical team, drawing on hands-on bench testing of hose bibs, sillcocks, and compression valves. vigacc is a manufacturer and global supplier of faucets and bathroom fixtures, and our engineers build and stress-test valve stems, cartridges, and washers to international durability standards (including ceramic-disc cartridges rated for 500,000+ open/close cycles). Every fixture we produce is designed to meet recognized flow, lead-safety, and pressure benchmarks and is backed by a manufacturer warranty — because a faucet that doesn’t leak in year ten is the whole point. If you’re choosing between valve types for a replacement, our comparison of ceramic disc vs. ball valve cartridges will help you pick the longer-lasting mechanism.

FAQ

Why is my outdoor faucet leaking from the handle when I turn it on?

Water escaping around the handle means the packing nut is loose or the packing washer/O-ring behind it has hardened. First, gently tighten the packing nut a quarter turn clockwise while the water runs. If it still leaks, shut off the water, remove the stem, and replace the packing washer or O-ring — a five-minute, few-dollar fix.

Can I fix a leaky exterior water faucet without turning off the main water?

Only if your outdoor line has its own dedicated shutoff valve, usually inside near the water meter or in the basement. If it doesn’t, you must shut off the main — opening the packing nut on a pressurized line will spray water everywhere and you won’t be able to remove the stem safely. Always drain the faucet by opening it after shutting off the supply.

How much does it cost to fix a dripping outdoor spigot yourself?

A DIY repair typically costs $3–$15 in parts — a washer assortment and maybe an O-ring kit. A brand-specific frost-proof stem kit runs $8–$25. Compare that to $100–$250 for a plumber’s service call. Even replacing the entire hose bib is only $10–$60 in materials.

Why does my outdoor faucet still drip after I replaced the washer?

The valve seat — the brass surface the washer presses against — is probably pitted or corroded, so a new washer can’t seal against it. Use a seat-grinding tool to smooth it or replace the seat with a seat wrench. Also confirm you used the exact right washer size and didn’t over-tighten the handle, which deforms fresh washers quickly.

Do I need to replace the whole faucet or just the washer?

Replace only the washer if the faucet body, threads, and seat are in good shape — that covers most spout drips. Replace the entire faucet if the body is cracked, threads are stripped, a pipe split from freezing, or you’ve already rebuilt it twice. A new frost-proof sillcock is inexpensive and adds winter freeze protection.

How do I stop my exterior faucet from leaking in winter?

Disconnect and drain all hoses before the first freeze, and install a frost-proof sillcock pitched slightly downward so it self-drains. A hose left attached traps water that freezes, expands, and can crack the pipe inside your wall. Adding an insulated faucet cover gives extra protection in very cold climates.