Water Leak Detection & Repair in Castro Valley — Fast, Non‑Invasive, Guaranteed

In Castro Valley, small leaks rarely stay small. A pinhole in a copper line can soak drywall, warp flooring,
and invite mold long before a puddle appears. Our licensed team uses non‑invasive diagnostics to find the
source quickly and repair it cleanly.

Hillside lots and longer plumbing runs can mask leaks until surfaces show damage.

Townhomes and condos with shared walls need clean, low‑impact detection techniques.

Five clues you may have a hidden leak:

1. Warm spots on floors or damp carpet over slab areas.

2. Unexplained spikes on your water bill despite normal use.

3. Soft drywall, swollen baseboards, or warped flooring.

4. Hissing sounds behind walls or near fixtures when water is off.

5. Stains on ceilings or bubbling paint along walls.

Why leaks happen:

- Over‑pressurized systems without a working PRV or expansion tank.

- Slab movement and soil conditions stressing buried pipes.

- Aging copper with pinhole corrosion from water chemistry.

- Worn angle stops, supply lines, and toilet fill valves.

Our step‑by‑step approach:

Step 1: Acoustic listen and thermal scan to triangulate the leak position.

Step 2: Isolate lines to narrow the suspect branch without opening walls.

Step 3: Restore finishes neatly and verify with a final pressure test.

Step 4: Confirm with pressure testing or tracer gas for small, silent leaks.

Step 5: Open a small access point and make a clean, permanent repair.

Prevention plan for peace of mind:

- Replace old angle stops and braided supplies proactively.

- Know where your main shut‑off is and make sure it turns easily.

- Install leak alarms under sinks, behind washers, and near water heaters.

- Keep water pressure in spec with a functional pressure‑reducing valve (PRV).

Case snapshot (Castro Valley): A homeowner noticed a warm floor patch near the hallway. Thermal imaging
confirmed a hot‑side slab leak. We isolated the run, performed a clean access repair, and verified with a
pressure hold — all in one day.

Expect tidy work, labeled shut‑offs, and a walkthrough before we leave. If you’re seeing signs of a leak in
Castro Valley, acting early prevents bigger repairs later.