How to Repair a Leaky Outdoor Hose Bibb

Water waste at your exterior foundation is more than just a nuisance; it is a sign that your valve's internal seal has hardened or cracked over time. A properly functioning hose bibb should shut off completely with a firm, simple turn, leaving no puddles or persistent drips behind after use. Repairing this is a rite of passage for any homeowner. You do not need to replace the entire fixture or hire a plumber. By swapping out the seat washer or tightening the packing nut, you restore the integrity of the connection and prevent the long-term moisture damage that leads to wall rot or freezing pipe issues.

1. Shut Off the Water Supply. Locate the interior shut-off valve that controls the water supply to your outdoor spigot. Close it firmly, then open the outdoor hose bibb fully to drain any remaining pressure in the line.
2. Loosen the Packing Nut. Use an adjustable wrench to loosen the packing nut located directly behind the handle. Keep the faucet body steady with a second wrench while you turn the nut counter-clockwise to prevent damage to the pipe inside your wall.
3. Pull Out the Valve Stem. Once the packing nut is loose, pull the handle outward to slide the entire valve stem assembly out of the body. If it is stuck, apply firm, steady pressure until it releases.
4. Swap in the New Washer. Unscrew the small brass screw at the base of the stem to release the old rubber seat washer. Clean the area with a stiff nylon brush, then install a new washer of the exact same diameter and thickness.
5. Refresh the Packing Seal. If the leak was coming from the handle area while the water was on, replace the packing material or the small rubber O-ring found under the packing nut. Coat it with a thin layer of heat-proof plumbing grease for a better seal.
6. Turn Water Back On. Slide the stem back into the faucet body, tighten the packing nut, and close the handle. Turn the water supply back on slowly and check for leaks at both the handle and the spout.