Outdoor hose bib and spigot repair

Standard, frost-free, and why it matters here

A standard hose bib is a compression tap with its valve seat right at the wall, outdoors. Water sits in the body permanently, on the cold side of the insulation. In a freeze, that water expands and the body or the pipe just behind it splits.

A frost-free (or freeze-proof) bib looks similar from outside but has a long stem, typically 8 to 14 inches, that puts the actual valve seat inside the heated wall. When you close it, the water in the exposed tube drains out and there is nothing left to freeze.

They only work if installed correctly. The bib must pitch slightly downward towards the outside so the tube drains. Installed level or pitched inward, it holds water and freezes exactly like a standard bib. This is a genuinely common installation error.

And they only work if the hose is disconnected. A hose left attached traps water in the tube regardless of the pitch. Every winter this splits frost-free bibs that would otherwise have been fine, and the owner concludes the freeze-proof design does not work. It does; the hose defeats it.

Anti-siphon and backflow. Modern bibs incorporate a vacuum breaker to stop contaminated water being siphoned back into the house supply. Required by code, and a common cause of a bib that spits or dribbles from the top, usually a cheap replaceable part rather than a new tap.

What goes wrong

Dripping from the spout when closed. The washer at the end of the stem has worn, or the seat is pitted. On a standard bib, a rebuild is cheap. On a frost-free, the washer is at the far end of a long stem, and the whole stem assembly usually comes out as a unit.

Leaking around the handle when open. Packing nut or packing washer. Frequently fixed by snugging the nut a quarter turn.

Dribbling from the vacuum breaker on top. The internal seal in the anti-siphon device. Replaceable cap kits exist for most brands.

Handle spins freely. The stem has sheared or the handle has stripped. Handle is cheap; a sheared stem means the internals.

Loose at the wall, moving when a hose is pulled. The mounting has failed or the pipe behind it is unsupported. This one matters more than it looks, every movement works the joint inside the wall, and that joint is not somewhere you want a slow leak.

Nothing comes out. Either a valve inside is closed, or the pipe behind it froze and split at some point and the water is now going somewhere else. If a bib produces nothing after a freeze, treat it as a leak inside the wall until proven otherwise.

Freeze damage: the failure that hides

The hose bib is where most Texas freeze damage begins, and it is uniquely deceptive.

What happens. Water in the bib body or the short run of pipe behind it freezes and expands. Metal splits, usually the pipe just inside the wall rather than the visible tap.

Why you do not notice. While it is still frozen, the ice plugs its own split. Nothing leaks. The thaw comes, everyone relaxes, and then the ice melts and a split pipe inside a wall starts running at full pressure.

Where the water goes. Down inside the wall cavity, into insulation, along the bottom plate, and out at the baseboard or into the garage. By the time it shows, it has been running for a while.

What to do after a hard freeze. Test every outdoor bib once things have thawed. Someone stands inside listening near the wall while someone else opens the tap outside. Weak flow, no flow, or a rushing sound inside the wall all mean shut off the water and call.

The frost-free that split anyway. Almost always either a hose left connected over the freeze, or a unit installed without the downward pitch. Both are fixable at replacement.

Repair or replace, and what a good replacement looks like

Rebuild when the bib is sound, the seat is in good condition, and parts are available. Washer, packing and occasionally a seat dressing. Cheap, quick, and the right answer for a simple drip on a decent tap.

Replace when the body is split or corroded, the seat is pitted beyond dressing, the bib is a standard type in a freeze-exposed location, or when the same bib has been rebuilt before.

What a proper replacement includes:

A frost-free of the correct length for the wall thickness. The seat has to end up inside the heated envelope, which on a brick veneer wall means a longer stem than people expect.

Correct downward pitch so it drains. Non-negotiable, and the most commonly skipped detail.

Integral vacuum breaker to meet code.

Solid mounting to the structure, with the pipe behind it supported so pulling on a hose does not work the joint inside the wall.

Proper sealing at the wall penetration.

An interior shut-off if there is none. A dedicated valve inside for each exterior bib is the single best upgrade available here. It means a future split can be isolated in seconds without shutting off the whole house, and it lets you drain the line deliberately before a freeze. Frequently missing, and worth adding while the wall connection is already being worked on.

The rest of the outdoor plumbing

While someone is out there, these are the items worth looking at on the same visit.

Irrigation backflow preventer. Usually a brass assembly above ground near the meter, and one of the most freeze-vulnerable items on a Texas property. Insulating it properly is cheap; replacing one is not.

Irrigation shut-off. Know where it is and whether it works. Turning the system off and draining it before a hard freeze prevents a great deal of damage.

Exposed pipe on exterior walls. Any supply pipe running on the outside of a wall, in an unheated garage, or through a vented crawlspace is a freeze candidate and should be insulated.

Pool equipment. Pumps, filters and their plumbing all hold water and all split. They need their own attention ahead of a freeze.

Hose bib washers on well systems. On a private well, an outdoor bib that runs when the pump is off can drain pressure and cause the pump to short-cycle.

Anti-siphon on any bib used with chemicals. If a hose is ever used with a fertiliser applicator or a pool, the vacuum breaker is not paperwork. It is the thing keeping that out of your drinking water.