Turn off the water to the faucet before you begin. You may have to trace along the pipes until you find the shut-off valve. It will probably be somewhere in the basement or crawl space, or near your water meter.
Use channel locking pliers to unscrew the nut holding the valve stem in place. If it is rusted or corroded and won't turn, spray on a little thread lubricant, wait five minutes, and try again.
Remove the valve stem from the faucet and examine the washer on the bottom. If it is worn, unscrew the screw holding it in place and remove it. Take the whole faucet to the hardware store for a replacement, as the washer may be too worn to size correctly.
Screw on the replacement washer and replace the valve stem into the faucet. Before screwing on the holding nut, wrap a little teflon tape clockwise around the threads.
Turn the water back on and test the faucet for leaks.
Things You Will Need
- Chanel locking pliers
- Thread lubricant
- Teflon tape
- If water leaks from the faucet while it is open, tighten the nut holding the faucet stem.
- If the faucet continues to leak when it is off, even with a new washer, the valve seat is probably damaged and it's time for a new faucet.