How to Fix a Leak Under the Sink

Leaks under the sink are no fun. They can cause a lot of damage. However,
they are usually easy to fix. There are many different leaks you could
have, from water-supply leaks to drain leaks. These leaks can be easy
enough for you to repair yourself, or they could be more complicated and
require the help of a professional.

Identifying the Cause of a Sink Leak

If you find that the floor in front of your sink is wet or that the cabinet
is wet, chances are you have a leak. If you suspect you have a leak, grab
a flashlight and use it to look under your sink. Some leaks are easy to
see and find, others require filling the sink and letting the water sit.

Types Of Sink Leaks

  • Water-Supply Leaks: A common source for leaks is the shut-off valves. These are a common
    place for drips because the compression fittings become loose and are
    not as tight as they should be. Some of these could be hard to fix because
    of their location.
  • Drain Leaks: These leaks can be the result of loose connections, corrosion, or a blockage.
    Some of these are very easy to fix, such as tightening compression nuts
    on plastic P-traps by hand. Metal traps could be more of a problem if
    they become corroded. If they are corroded you will need to replace the trap.
  • Other Leaks: Not all leaks are easy to detect. A sink drain leak can be hard to find
    because they only leak if the sink is full of water. Faucet leaks can
    be troublesome as well if the water is draining down the back of the faucet,
    causing it to drain underneath the sink. To fix a faucet you may have
    to disassemble and replace one or two gaskets or washers.

Most sink leaks are easy enough for you to find and fix yourself without
help. However, if you are unfamiliar with your sink or the pipes under
it, it is best to call for professional help. If you need help, call My
Plumber today. Our
Fairfax leak detection professionals can help with any leak your sink may have. Our techs can also help with
any of your other plumbing needs, no matter how big or small.

Don’t let a sink leak get you down! Call My Plumber Heating and Cooling
at (844) 294-8999 and let our techs get your sink running leak-free.