How to Winterize Outdoor Hose Bibs to Prevent Pipe Bursts

Why it matters

Winterizing outdoor hose bibs (also known as spigots or sillcocks) is one of the highest-ROI maintenance tasks a homeowner can perform. When water stays inside an exterior pipe during a freeze, it expands. Because the pipe is constrained, the pressure can exceed 3,000 psi, causing the copper or PEX supply line to split.

The real danger isn't the frozen pipe itself, but the thaw. Once the ice melts, water flows freely through the rupture, often flooding basements or crawlspaces behind finished walls. Preventing a single burst pipe can save you between $1,000 and $5,000 in water damage remediation and plumbing repairs. Even "frost-proof" faucets can fail if a hose is left attached, as the trapped water cannot drain out of the stem.

How often

This is a strictly seasonal task. You must winterize your hose bibs every autumn, specifically before the first overnight freeze. In most temperate climates, this occurs between late September and mid-November. If you live in a region that experiences "flash freezes," it is better to perform this task early rather than waiting for the weather forecast to turn.

What you need

• Insulated faucet covers: Polystyrene foam or "sock" style covers.
• Dry rag: For wiping down the faucet.
• Adjustable wrench: (Optional) If your hose is tightened too hard to remove by hand.
• Bucket: To catch any residual water from the indoor shut-off valve.

Step-by-step

Follow these steps in order to ensure the pipes are completely clear of standing water.

1. Disconnect all hoses: This is the most critical step. If a hose is left attached, water remains trapped in the faucet assembly. Even if you shut off the water inside, that trapped exterior water will freeze and split the faucet body. Drain the hoses, coil them, and store them in a garage or shed.
2. Locate the indoor shut-off valve: Go inside your home (usually in the basement, crawlspace, or utility closet) and find the water line leading to the outdoor spigot. Most modern homes have a dedicated "stop" valve for each bib. Turn the handle clockwise until it is fully closed.
3. Open the outdoor faucet: Go back outside and turn the outdoor faucet handle all the way to the "on" position. This allows any water remaining in the pipe to drain out. Leave the faucet open all winter to allow for air expansion.
4. Drain the bleeder valve (if applicable): Back inside, place a bucket under the shut-off valve. Many valves have a small brass "bleeder" cap on the side. Unscrew this cap to let the last bit of water drain out of the pipe section between the indoor valve and the outdoor spigot. Once the dripping stops, screw the cap back on tightly.
5. Dry and cover: Wipe the exterior faucet dry with a rag. Install an insulated faucet cover over the spigot. These covers trap the small amount of heat that radiates through the wall from the house, providing an extra layer of protection against extreme cold.

When to call a pro

In most cases, winterizing a hose bib is a simple DIY task. However, you should call a licensed plumber if:

• No indoor shut-off exists: If your home lacks dedicated shut-off valves for exterior spigots, a plumber should install them to prevent future freeze risks.
• The valve is stuck: If the indoor shut-off valve is frozen in place or leaks when you try to turn it, do not force it. You risk snapping the handle or the stem.
• Existing leaks: If you notice a "weeping" faucet or moisture around the indoor pipe before you start, the pipe may already have a hairline fracture.

Safety

• Crawlspace access: If your shut-off valves are in a crawlspace, ensure the area is well-ventilated and check for pests (like spiders or rodents) before entering. Wear a headlamp to keep your hands free.
• Ladder safety: If you have elevated hose bibs on a second-story deck, ensure your ladder is on level ground and follows the 4-to-1 ratio rule (one foot out for every four feet up).
• Ladder-free options: For high faucets, use a telescoping pole or wait until you can access them safely.

Cost

The cost of winterizing is negligible compared to the cost of a burst pipe.

• DIY Cost: $5 to $20. This covers the price of insulated foam covers, which are reusable for several years.
• Professional Cost: $100 to $200. If you hire a plumber to winterize your system, they usually charge a standard service call fee. This is often bundled with a broader "winterization" package that includes irrigation blow-outs.
• Replacement Cost: If a pipe bursts, expect to pay $250–$500 for the plumbing repair alone, plus potentially thousands in drywall and flooring restoration.