We often see people coming in who are having trouble with their faucet leaking. There are normally two ways a faucet will leak. One is out of the spout (where water would normally come out) and the other is around the handle. Paying close attention to which of these problems you have will greatly speed up and make our answers more accurate for you.
To fix a faucet leaking out of the spout, for a faucet that is NOT Delta or Moen, there is usually a washer on the bottom of the stem cartridge that would need to be replaced. For a Delta faucet, this problem can most always be solved by replacing the seats and springs under the cartridge. Many times for Moen faucets, the whole cartridge must be replaced. If this is the case, don’t forget to rent a puller to remove it, otherwise damage can be caused to the faucet.
To fix leaking from around the handle of a non Moen, there is normally an o-ring around the oustide of the stem cartridge that would need to be replaced. Other types may have a packing nut that can be tightened at bit. For a Delta single handle, there is a cap washer that sits on top of the ball. This may need to be replaced, or there is a plastic adjustment ring that can be tightened. Most Moen faucets would need to have the cartridge replaced. There are repair kits available for them, but are not always reliable.
There are always exceptions to every rule, so if none of these ideas fix your problem, please don’t hesitate to tell us about your problem. Its always helpful to have pictures of your problem, so feel free to snap a few with your digital camera before you come. We LOVE pictures!