We start every leaking faucet repair by shutting off the water supply at the angle stop. Then we remove the handle and inspect the cartridge or stem for wear. In homes across Downtown Gaithersburg and Kentlands, four distinct seasons cause repeated expansion and contraction that loosens packing nuts and cracks rubber seats. We replace the failed part with a matching brass or ceramic unit rated for local water pressure. After reassembly we open the supply and check for drips at every joint before restoring full flow.
Montgomery County requires that any work on supply lines inside the wall meets current code for shutoff access. In Lakelands and Quince Orchard homes we often find older compression fittings that have corroded from seasonal humidity changes. We cut out the damaged section and install new copper or PEX with proper support clips. We test the repair under normal operating pressure and leave the area clean. If the valve body itself shows thread damage we recommend full replacement to prevent future leaks behind finished surfaces.
Washingtonian Center and Montgomery Village properties frequently have widespread cartridge-style faucets that fail after five to seven years. We carry common models on the truck so most repairs finish in one visit. We always verify that the new cartridge seats fully and that the handle operates without binding. Final checks include confirming no drips at the aerator and that hot and cold lines balance correctly.
Leaking Faucet Repair Services We Offer
✓Cartridge Replacement
Swaps the worn cartridge so water stops dripping from the spout even after the handle closes fully.
✓O-Ring Seal Fix
Replaces the stem O-rings that leak around the handle base in homes where winter cold contracts the rubber.
✓Valve Stem Repair
Machines or replaces the stem to stop leaks at the packing nut without removing the entire faucet body.
✓Supply Line Tightening
Secures loose supply connections under the sink that drip onto cabinet floors in humid summer conditions.
✓Aerator Cleaning
Removes mineral buildup that restricts flow and forces pressure back through worn seals.
Leaking Faucet Repair Cost in Gaithersburg, MD
| Service | Typical Range | What Affects It |
|---|---|---|
| Cartridge Replacement | $180–$320 | Price rises when the faucet model requires special tools or the supply valves are seized. |
| Stem And O-Ring Service | $140–$260 | Older stems in homes built before 1995 often need full replacement instead of seals alone. |
| Supply Line Repair | $110–$210 | Cost increases if lines run behind cabinets or drywall that must be opened for access. |
| Full Faucet Rebuild | $250–$450 | Applies when both hot and cold sides plus the spout diverter show wear from seasonal temperature swings. |
Ranges are typical for Gaithersburg, MD and confirmed with an exact written quote before any work starts.
How it works
- 1
Site Assessment
Turn off water at the angle stop and remove the handle and trim to expose the cartridge or stem.
- 2
Component Diagnosis
Inspect the cartridge, O-rings, and valve body for wear and note any thread damage on the faucet.
- 3
Part Replacement
Install the correct replacement cartridge or seals and reassemble the faucet with new plumber's tape on threads.
- 4
Pressure Test
Restore water, operate the handle through full range, and check every joint for drips.
- 5
Final Cleanup
Wipe the sink and floor, confirm hot and cold balance, and note any follow-up recommendations.
Pricing
We inspect first then give a flat price before any parts are installed.