๐Ÿ”ง Copper ยท PEX ยท Galvanized ยท PVC

Pipe Repair in San Anselmo, CA โ€” Located Precisely, Fixed Permanently

In San Anselmo's mixed housing stock, a single repair call might involve copper sweated joints, threaded galvanized fittings, push-connect PEX transitions, or CPVC drain arms โ€” sometimes all in the same house. Our techs carry the materials and know the techniques for every pipe type commonly found in CA homes.

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Acoustic & Thermal Leak Location All Pipe Materials Press-Fit & Sweat Capable Licensed in CA
Licensed Pipe Repair service in San Anselmo, CA - Masters Plumbing Service

4 Things That Define Our Pipe Repair Service in San Anselmo, CA

Our techs work on every pipe material found in San Anselmo, CA homes, from pre-1970s galvanized to modern PEX-A crosslinked systems. The repair method matches the pipe.

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Acoustic Leak Detection

Pressurized water escaping a pipe creates a characteristic acoustic signature. Our listening devices amplify ground and structure-borne sound to pinpoint a leak location within inches โ€” through concrete slabs, behind drywall, or under flooring. This means we open only the section of wall, floor, or slab directly over the failure.

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Thermal Camera Scanning

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.

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All Pipe Materials & Joining Methods

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.

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Pressure-Tested Before We Leave

Drain line repairs are water-tested by running fixtures through the repaired section and visually confirming no seepage at the repair joint and downstream.

What We Fix โ€” Pipe by Pipe, Material by Material

Pipe failures have different causes depending on material type, age, water chemistry, and installation history. Here's how we address each category.

Copper

Copper Pipe Repair & Repipe

Pitting corrosion in copper is sometimes systemic rather than localized โ€” a single pinhole is often the first of several to appear. When the camera or pressure test finds multiple deteriorated sections, we give you an honest assessment of whether targeted repair or full copper repipe is the better long-term answer.

Galvanized

Galvanized Pipe Replacement

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.

PEX

PEX Pipe Repair & Extension

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.

Burst Pipes

Burst & Freeze-Damaged Pipe Repair

A burst pipe from freezing or sudden pressure surge requires immediate water shutoff and precise repair. We locate the failure, determine whether it's a single failure point or multiple freeze-damaged sections, and repair with a method appropriate to the pipe material โ€” press-fit coupling for copper, expansion coupling for PEX-A, or a mechanical repair coupling for emergency situations.

Slab Leaks

Under-Slab Pipe Leak Repair

Supply line leaks under a concrete slab are identified by acoustic detection and confirmed by thermal imaging. Once located, we evaluate three repair options: direct-access repair (jackhammering to the pipe, repairing the section, and patching the slab); rerouting the line through the wall framing above slab to bypass the failed underground run; or epoxy pipe lining for older copper systems with systemic pinhole corrosion.

Full Repipe

Whole-House Repipe Service

When galvanized supply lines are at end of life or polybutylene pipe (recalled for chronic failure) is in the home, a full repipe with PEX or copper is the permanent solution. We run new supply lines through the structure, transition all fixture connections, pressure test the entire new system, and patch access points in walls and ceilings.

How Our Pipe Repair Process Works in San Anselmo, CA

We don't open walls at random. Acoustic and thermal detection tools tell us exactly where to cut before we pick up a saw.

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Call & Describe โ€” We Shut the Water If Needed

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.

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Pressure Test & Acoustic / Thermal Detection

We pressurize the supply system and monitor for pressure drop to confirm an active leak. Then acoustic listening devices and the thermal camera locate the failure to within a small area โ€” telling us which section of wall, floor, or slab to open.

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Flat-Rate Quote & Minimal Access Opening

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 12โ€“18 inch drywall or flooring access, not a full wall section.

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Repair & Pressure Test โ€” Then You're Done

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.

24/7 Emergency Pipe Repair experts in San Anselmo, CA

Real Pipe Repair Reviews from San Anselmo, CA Homeowners

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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.

โ€” N. Bergman, San Anselmo
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Had an under-slab leak diagnosed by Masters Plumbing Service with acoustic equipment. They found the leak at 6 feet from the wall โ€” a single copper elbow that had developed a pinhole. Presented three options: direct slab access, reroute through the wall framing above, or copper lining. I chose the reroute โ€” they ran a new PEX line through the crawl space and connected at both ends without touching the slab. Pressure tested, verified no remaining drop. No jackhammering at all.

โ€” O. & R. Adeyemi, San Anselmo, CA
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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.

โ€” F. Okoro, San Anselmo, CA
Trusted Pipe Repair service in San Anselmo, CA - Masters Plumbing Service

Pipe Repair Questions We Answer Every Day

A slow pinhole leak inside a wall can run for months before surface damage appears. By the time you see a stain, the moisture intrusion is typically already significant. If your meter shows movement with everything off, call us โ€” we can pressure-test and locate it before it becomes a major remediation project.
In some cases โ€” particularly for older copper systems with multiple pinhole failures along a supply run โ€” rerouting the line through accessible framing rather than repairing it in place is more practical and more permanent. We present both options when they're both viable.
Repair options include direct slab access (jackhammer to the pipe, repair, patch), rerouting the supply line above slab through framing, and for copper systems with multiple pinhole failures, epoxy pipe lining from inside the pipe without excavation. We use acoustic and thermal detection to locate the leak before recommending a repair approach.
We assess galvanized condition when we're on-site โ€” visible exterior corrosion, interior scale visible at the cut failure point, and water pressure readings all tell us how advanced the system deterioration is. We give you the repair-vs-repipe math honestly so you can make the decision that fits your timeline and budget.
We don't rush pressure testing at the end. That's the step that confirms the repair is actually complete, and it takes the time it takes.
Our pipe repair quote includes clean access cuts and leaving the opening ready for patching โ€” with a clean, straight cut that accepts a standard drywall patch. We can typically patch the access opening as part of the job on request, though finish painting and texture matching are typically handled by the homeowner or a drywall contractor for best cosmetic results.

Your Local Pipe Repair Specialists in San Anselmo, CA

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

Reliable Pipe Repair contractor in San Anselmo, CA by Masters Plumbing Service
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Pipe Leaking in San Anselmo, CA? Don't Let It Run โ€” Call Masters Plumbing Service

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

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Our Services in San Anselmo, CA

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๐ŸŸข Techs On Duty in San Anselmo, CA Call +1-855-718-1500