Hose Bib — Outdoor Faucet and Sillcock Repair Guide

A hose bib is an outdoor threaded faucet on a house exterior that provides a connection point for a garden hose.

Hose Bib diagram — labeled parts, dimensions, and installation context

What It Is

A hose bib is the exterior water valve most homeowners use for watering, washing, and other outdoor tasks. It is normally connected to the house plumbing and includes hose threads so standard garden hoses can attach directly. Some hose bibbs are simple compression-style faucets, while others are frost-free sillcocks designed to reduce freeze damage by locating the shutoff seat deeper inside the wall.

Types

Common types include standard hose bibbs, frost-free sillcocks, anti-siphon hose bibbs, and ball-valve style outdoor faucets.

Where It Is Used

Hose bibbs are used on exterior walls, in garages, and sometimes inside crawl spaces or utility areas for service connections. Most homes have at least one, and larger properties often have several.

How to Identify One

You can identify one by the outdoor handle and threaded spout sized for a garden hose. Dripping after shutdown, leaking around the stem, weak flow, and loose mounting are all common issues.

Replacement

Replacement is needed when the faucet leaks, freezes and cracks, no longer shuts off fully, or lacks required backflow protection. The replacement should match the wall thickness, pipe type, and freeze protection needs of the location.

Hose Bib — FAQ

What is the difference between a hose bib and a sillcock?

People often use the terms interchangeably. 'Sillcock' usually refers to the same outdoor faucet, especially a frost-free design that extends back into the wall.

Why does my hose bib drip after I turn it off?

A worn washer, damaged valve seat, or cracked body can cause dripping. If it is a frost-free model, water may also keep dripping briefly while the long barrel drains out.

Do I need a frost-free hose bib?

In climates with freezing weather, it is usually the better choice. It reduces the chance of burst piping, but it still has to be installed correctly and the hose should be disconnected in winter.

What is an anti-siphon hose bib?

It includes a vacuum breaker or backflow feature that helps stop contaminated water from being drawn back into the house plumbing. Many local codes require that protection on outdoor faucets.

Can I replace a hose bib myself?

Sometimes, if the piping is accessible and the connection is straightforward. If the pipe is inside a finished wall, soldered, or damaged by freezing, a plumber is usually the safer choice.