Water leak under the sink in Fayetteville, GA

Water under a sink is one of the most common plumbing problems in homes. It can come from several places: the supply lines to the faucet, the faucet itself, the drain and trap, the garbage disposal, the dishwasher connection or the shut-off valves. Finding which one is leaking is the key to a quick repair.

A cabinet that stays damp is more than a nuisance. Moisture warps cabinet bases, loosens finishes, encourages mold and can attract pests. Because the leak is hidden behind a door, it can go on for weeks before anyone notices.

Our plumbers find the exact source of the leak, repair or replace the failed part and make sure the area is dry and sound. We also look at the nearby plumbing and tell you if anything else looks worn.

If water is spraying or flowing, close the shut-off valves under the sink right away, or the main water valve if they are stuck, and call us.

We begin by emptying the cabinet and drying every surface, including pipes and connections. A dry cabinet makes the leak easy to see once water starts moving again. Then we run the faucet and watch each connection.

If water appears only while the faucet is running, we focus on supply lines, valves and faucet connections. If water appears when the sink drains, we look at the trap, the drain connections and any disposal. We use a flashlight and dry paper towels to spot even small drips.

Once the source is clear, we explain the repair. Many leaks come from loose slip nuts or worn washers that can be tightened or replaced quickly. Others come from supply lines or valves that have aged and need replacement.

We replace the failed part with a proper fitting, then test again. We run water, fill the sink and drain it to check under real use, and we leave the cabinet dry.

If we see moisture damage, we tell you what we found. Cabinet repair is separate work, but knowing the extent of the damage helps you decide what to do next.

We also point out other aging parts. Old shut-off valves, brittle supply lines and corroded fittings are common, and replacing them at the same time prevents another call.

Hidden leaks inside the wall behind the cabinet are less common but more serious. If we suspect that, we explain what we saw and recommend leak detection or further inspection.

Garbage disposals are a frequent culprit. A disposal can leak at the sink flange, the drain connection or the housing itself. A leak at the flange or a connection can often be fixed with new seals or tightening. A leak from the housing usually means the disposal needs to be replaced.

Dishwashers add complexity under a kitchen sink. The supply line and drain hose pass through the cabinet, and a loose clamp or worn hose can leak only when the dishwasher runs. If you notice water only after a cycle, tell us. It helps us focus on the dishwasher connections.

If the cabinet floor is soft, swollen or moldy, the leak has probably been present for a while. Replacing the plumbing part fixes the cause, but damaged cabinet material may need repair or replacement. We explain what we see and you can decide how to proceed.

Finally, check under your other sinks. If one has a leak, others of the same age may be close behind. A quick look, or a plumber visit, can catch problems while they are still small.

Timing matters with cabinet leaks. The sooner the source is found, the less moisture gets into wood and finishes. If you see water, shut off the valves, dry the cabinet and call us. If you only notice a musty smell or a soft spot, tell us how long you think it has been happening so we can look for hidden moisture too.

We also like to leave you with a short list of what we saw and did, so you know which parts are new and which are still original. That makes it easier to plan future maintenance and to tell any other plumber what has already been replaced.

If your home has more than one bathroom or kitchen sink, the same type of connection is probably present at each. A quick check of every supply line and valve for corrosion and drips is a good habit.