Sink Installation in Wenatchee

Common Reasons a Sink Leaks

Not all sink leaks come from the same place, and the source usually determines how involved the repair will be. Knowing what to look for helps you describe the problem clearly when you call.

Worn Washers & O-Rings

The washers and O-rings inside faucet handles degrade over time. As they wear down, water seeps past them, producing drips at the faucet base or around the handle. This is one of the more common sources of a slow leak you’ll notice only after the cabinet under the sink is already damp.

Corroded Valve Seat

The valve seat is the sealing surface inside the faucet body that the washer presses against to stop water flow. When it corrodes, the seal breaks down and the faucet drips from the spout even when fully closed. Sediment buildup accelerates the corrosion, particularly in areas with harder water.

Loose Supply Line Connections

Water supply lines under the sink can loosen gradually from vibration, age, or an initial connection that wasn’t quite tight enough. The result is dampness or active dripping at the fitting. Tightening the connection sometimes resolves it. If the line itself is cracked or the fitting is corroded, replacement is the right call.

Failed Drain Seals

Where the drain assembly meets the sink basin, a seal prevents water from escaping beneath the sink. In older fixtures, that seal deteriorates and water migrates downward, often appearing as staining inside the cabinet rather than a visible drip. Cracked or dried-out sealant around the drain ring is a sign this is the source.

High Water Pressure

Excessive pressure stresses washers, seals, and connections across the entire fixture. If you’re finding multiple small leaks at once, or if leaks return quickly after repair, water pressure above the normal range of 40 to 80 PSI may be a contributing factor worth checking.

Some leaks, like a loose supply connection, are straightforward to address. Repairs involving internal faucet components or the drain assembly are best handled by a licensed plumber to help avoid water damage from a repair that doesn’t hold.

What to Expect During a Sink Replacement

A professional sink replacement follows a predictable sequence. Understanding each step helps you know what our team is doing and why it matters.

Shutoff, Disconnection, & Removal

The job starts with shutting off the water supply valves under the sink, then disconnecting the faucet, supply lines, and drain assembly, including the P-trap. How the old sink comes out depends on how it was installed: drop-in sinks are typically held by clips or screws from below, while undermount sinks use adhesive bonded to the underside of the countertop and may require temporary support structures during removal.

Surface Prep & Setting the New Sink

Once the old fixture is out, the countertop surface is cleaned of residual caulk and sealant. Setting the new sink cleanly on a prepped surface is what makes the finished installation look right and seal correctly. Undermount installations cure under support before any weight is applied. Caulk or sealant is applied following the manufacturer’s specifications to create a watertight seal at the rim.

Reconnection & Testing

The faucet, supply lines, and drain assembly are then reconnected with proper alignment. After everything is hand-tight and wrench-tightened where appropriate, the supply is restored and the faucet and drain are tested. Any weeping at a connection is addressed before we pack up.

Countertop material, sink type, and the configuration of the existing drain and supply rough-in all affect how long a replacement takes. A licensed plumber handles the variables that can turn a straightforward swap into a callback.