A slow drip from your kitchen spout wastes water and raises bills, but it also points to wear inside the valve. When you call us for leaky faucet repair, we treat the faucet like a small machine with parts that need accurate diagnosis and careful rebuilding. Our goal is to stop the drip and return smooth handle movement without mess or guesswork.
What Causes Drips In Single-Handle Faucets
Most single-handle kitchen faucets use a cartridge that blends hot and cold. Drips at the spout usually come from worn seals, a scratched cartridge surface, or mineral scale that prevents full shutoff. High water pressure, debris from recent plumbing work, and aged O-rings can add to the problem. Some models also have springs and seats that flatten over time, letting water slip past even when the handle feels closed.
How We Diagnose Without Guesswork
We start by identifying the brand and model so we can match the exact internal parts. After shutting off supplies and protecting the sink, we inspect the valve body, stem, and seats for scoring or pitting. We check static and dynamic pressure, confirm hot and cold orientation, and look for cross-flow that can mask the real cause. If the aerator is catching grit, we clear it, but we do not stop there. We verify that the leak is valve-related and not from a split spray hose or loose connector.
Our Clean Rebuild Process
With the right kit on hand, we remove the handle and bonnet, pull the cartridge, and descale the valve body. We polish the seat surfaces, replace O-rings and seats, and install a new cartridge using food-grade silicone lubricant. We reassemble according to the manufacturer’s torque specifications, set the temperature limit stop, and test through several on-off and sweep cycles. Finally, we flush the lines, clean the work area, and leave the sink and counter dry.
When Replacement Makes Sense
If the valve body is deeply scarred or parts are discontinued, we will recommend a quality replacement with a comparable hole pattern and reach. We handle supply lines, shutoffs, and disposal so you get a neat result and a steady, quiet stream.
Contact All About Plumbing at (425) 657-3557 to schedule a technician for leaky faucet repair in Renton. We restore proper shutoff, smooth feel at the handle, and a clean sink area so your kitchen works the way it should.
