Repairing a drippy faucet: 

(Double-handle faucet compression type:)  

There are basically two type of faucets; the single lever, and double handle faucet. The single handled faucet is "washerless." They are manufactured in three types; the ball, the cartridge, and the disc faucet. One problem with these faucets is locating parts when the faucet fails at a later date. The designs are changing all of the time. My recommendation is, if you start having problems with a single lever faucet, like an annoying drip, call a plumber from your contractors list. The double handled faucet is a different story. When a drip develops it is most likely a failed washer and can be replaced in a very short period of time.

Tools and Materials: Flat head (slot) screw driver, Phillip head screw driver, pliers, adjustable wrench, and a package of faucet washers.

Repairing a drippy double handled faucet will be the same whether the faucet is in the bathroom or kitchen. Underneath the sink will be a shut off valve for the cold and hot water. First, turn off the valve for the cold water side. Now check to see if the drip stops at the faucet. If it doesn't, shut off the hot water side. If it stops then, you know the problem is on the hot water side. If there are no shut off valves under the sink then you will have to shut off the water at the main shutoff. This is located at the water meter or well pump.

Go to the faucet. Pull up the sink stopper so you don't lose parts down the drain while you are repairing the faucet. Using a small flat head screwdriver or knife remove the trim cap at the top of the knob. Usually the trim cap will have either a "C" or "H" on the top. Some faucets will not have a trim cap, just a screw. Once removed, use either a phillips or flat head screwdriver and remove the handle screw. Now remove the handle and sleeve. Using an adjustable wrench loosen the locknut at the top of the valve stem assembly. Be careful not to scratch the faucet. Now, firmly grasp the tip of the stem and carefully pull and wiggle the stem out of the faucet body. A little water may come out, but it will quickly stop. Holding the stem assembly in one hand, use the screwdriver and remove the retaining screw at the bottom of the assembly. Pop out the old washer using a small screwdriver or knife. Replace it with an identical washer (there are bevelled and flat washers at different sizes.) Sometimes you may need to take the whole assembly to a hardware store to get the right washer. Now, reassemble the faucet by reversing the procedure.