Pipe failures range from a slow pinhole leak weeping inside a wall to a full main line rupture. Locating the failure precisely โ before opening drywall or digging โ is the skill that separates a clean, affordable repair from an expensive and destructive guessing operation. Masters Plumbing Service's pipe technicians in Alpine, CA use acoustic listening devices and thermal imaging cameras to find the leak first, then open only what needs to be opened.
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Our techs work on every pipe material found in Alpine, CA homes, from pre-1970s galvanized to modern PEX-A crosslinked systems. The repair method matches the pipe.
Acoustic detection is most effective on pressurized supply lines. Combined with a pressure test to confirm water loss before we start, it tells us both that there's a leak and exactly where it is.
We use thermal imaging as a complement to acoustic detection โ particularly useful for slab leaks and leaks inside insulated wall cavities where sound transmission is reduced.
Our techs are proficient in copper sweating (soldering), press-fit connections (ProPress system), CPVC solvent welding, PEX crimp and expansion fitting installation, threaded galvanized repair, and ABS/PVC drain line work. We match the repair method and material to the existing pipe system rather than forcing incompatible transitions.
Drain line repairs are water-tested by running fixtures through the repaired section and visually confirming no seepage at the repair joint and downstream.
Pipe failures have different causes depending on material type, age, water chemistry, and installation history. Here's how we address each category.
Copper failures most often involve pinhole corrosion in soft copper tubing from aggressive water chemistry, failed soldered joints, or fatigue cracks at fittings in high-vibration locations. We locate the failure precisely, cut out the failed section, and install either a sweated repair coupling or a press-fit connector โ both rated to ASTM B88 standards for potable water service.
Galvanized steel pipe was standard in homes built before the 1960s. It corrodes from the inside out โ zinc coating depletes, iron oxide (rust) accumulates on the inner wall, progressively narrowing flow and leaching into the water supply. Repairs on severely corroded galvanized are generally temporary; the pipe is failing systemically along its full run.
Cross-linked polyethylene (PEX) is the current standard for residential supply piping. Failures are uncommon but occur at crimp or clamp fittings that were improperly installed, at pipe runs exposed to UV degradation, or at locations where the pipe was kinked during installation. We repair using expansion fittings (for PEX-A) or crimp fittings with the correct ring size for the pipe diameter.
We also inspect upstream of the burst for additional sections that froze but haven't yet failed โ because a partially-thawed line sometimes shows multiple failure points only after pressure is restored.
Slab leak rerouting is often more cost-effective than direct access, particularly for longer runs or under tiled floors. We present the options honestly with pricing so you can choose based on your priorities.
A full repipe in Alpine typically completes in 2โ3 days for a standard single-family home. You're without water for a portion of each day; we plan the schedule to minimize disruption to occupied rooms.
Here's how a Masters Plumbing Service pipe repair call plays out in Alpine, CA.
Active leak? Our dispatcher walks you through shutting off the main supply valve while we drive to you. Describing what you see โ water stain on a ceiling, drop in water pressure, wet flooring โ helps us arrive with the right detection tools loaded.
This detection step routinely saves homeowners $500โ$2,000 in unnecessary drywall removal compared to opening walls speculatively.
You receive a flat-rate quote covering the specific repair based on what the detection confirmed. We open only what needs to be opened โ typically a 12โ18 inch drywall or flooring access, not a full wall section.
Repair executes immediately on approval. After the repair, we repressurize and hold a pressure test to confirm the failure is fully resolved โ not partially. The access opening is left clean for your drywall patch or left ready for your contractor.

My older home had a copper supply line fail inside an exterior wall. The thermal camera showed the wet zone through the drywall without any cutting. They opened a 10-inch section right at the pinhole, put in a press-fit repair coupling โ no torch in my wall โ pressure tested, and patched the drywall themselves. Two hours total.
Our galvanized supply lines finally gave out โ low pressure everywhere, rust-colored water at some fixtures. Masters Plumbing Service repiped the whole house with PEX over two days. They confirmed pressure and flow at every fixture before leaving, patched all the wall access points smooth, and cleaned up each work area. One year later, no issues at all.
Pipe burst in a rental property at 2 AM โ Masters Plumbing Service's emergency line answered immediately, talked my tenant through the main shutoff, and had a tech there in 45 minutes. Freeze crack in a PEX line in an exterior wall. Repair and insulation wrap done in under two hours. Detailed receipt for insurance documentation. Exactly what I needed as a landlord dealing with a crisis remotely.

Masters Plumbing Service dispatches pipe repair technicians throughout Alpine and the broader Alpine, CA service area. Same-day service is available on most calls. Emergency burst pipe response is available 24 hours a day.

Same-day pipe repair available in Alpine, CA. Call now to schedule.
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