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Home/Services/Whole-Home Copper & PEX-a Repiping
SF Peninsula Repiping & Water Line Specialists

Whole-Home Copper & PEX-a Repiping

Replace aging galvanized iron and failing copper pipes with clean, corrosion-proof Type-L copper and Uponor PEX-a expansion systems. We restore crisp water pressure, eliminate discolored water, and include clean drywall patching across the San Francisco Peninsula.

Whole-Home Copper & PEX-a Repiping
Whole-Home Repiping
Type-L copper & Uponor PEX-a clean installation
Licensed C-36
CA #1037326, active standing
Bonded & insured
Commercial and residential coverage
Written prices
Fixed scope and price before work starts
Photo-documented
Every diagnostic and repair logged
Overview

Galvanized Corrosion vs. Modern PEX-a and Type-L Copper

Many homes built across the San Francisco Peninsula between the 1940s and 1980s still rely on original galvanized steel or aging thin-wall copper water supply lines. Over decades, galvanized pipes suffer from heavy internal oxidation and mineral buildup, choking water flow to a trickle when multiple fixtures run simultaneously, while shedding reddish rust and metallic sediment into sinks, tubs, and drinking water.

A whole-home repipe replaces your entire potable water distribution network with modern, high-durability materials: American-made Type-L hard copper or Uponor ProPEX (PEX-a) cross-linked polyethylene. PEX-a uses cold-expansion fittings that can never slip or corrode, withstands seismic ground shifting without cracking, and resists aggressive chloramines present in Bay Area blended municipal water supplies.

Daso Plumbing specializes in clean, occupied-home repiping designed to minimize household disruption. Our technicians strategically open small, surgical access cuts in drywall or route lines through basements, crawlspaces, and attics, keeping your water service active overnight during multi-day projects. Every repiping project is fully permitted, inspected by local city building departments, and completed with professional drywall patching.

SF Peninsula Repiping & Water Line Specialists
SF Peninsula Repiping & Water Line Specialists
Scope

What the work covers.

01

Uponor PEX-a Expansion Systems

Commercial-grade Uponor (Wirsbo) ProPEX cross-linked polyethylene piping that expands and contracts without bursting or fitting failure.

  • Shape-memory thermal expansion fittings with zero glue or solder
  • Smooth internal surface resists mineral scale and calcification
  • Exceptional flexibility absorbs California seismic ground movement
  • Backed by 25-year manufacturer warranty and 50+ year design life
02

USA-Manufactured Type-L Hard Copper

Heavy-wall USA-made Type-L rigid copper tubing soldered with lead-free brass fittings for unmatched structural rigidity and longevity.

  • Heavy-gauge Type-L wall thickness for superior pressure tolerance
  • Clean, lead-free torch-brazed and soldered joints
  • Ideal for exposed mechanical rooms, water heater loops, and exterior drops
  • 100% recyclable, UV-resistant, and impervious to rodent gnawing
03

Surgical Drywall Access & Patching

We plan precise routing paths through basements, attics, and closets to minimize drywall cuts, followed by clean texture-matched patching.

  • Surgical, laser-measured sheetrock access cuts
  • Floor, furniture, and dust protection barriers installed daily
  • Professional drywall taping, mudding, and texture matching
  • Leaves living spaces clean, habitable, and ready for paint
04

Main Water Service Line Upgrades

Replace failing galvanized or corroded yard service lines running from municipal street meters to your home foundation.

  • Seamless high-density polyethylene (HDPE) or Type-K copper service lines
  • Trenchless directional boring options to preserve lawns and walkways
  • Main shutoff ball valve and pressure regulator valve (PRV) upgrades
  • Upgraded diameter restores high-GPM volume for irrigation and additions
05

Dedicated Manifold & Home Run Plumbing

Engineered central water distribution manifolds that provide balanced, uninterrupted pressure to every fixture simultaneously.

  • Dedicated supply runs eliminate shower temperature fluctuations
  • Individual fixture shutoff valves located at a central utility panel
  • High-efficiency recirculation loop integration for instant hot water
  • Title 24 energy-efficient pipe insulation on all hot water lines
06

Municipal Permitting & Inspection Coordination

We handle all plumbing permit applications, code compliance, and inspection appointments with Peninsula city building departments.

  • Full permit filing in Belmont, San Mateo, Burlingame, Palo Alto, etc.
  • Comprehensive 100+ PSI pressure testing witnessed by city inspectors
  • Seismic earth bonding and electrical grounding verification
  • Guaranteed first-pass municipal inspection sign-offs
Our work

Recent installations.

Photographed on Peninsula jobs by the crews who did the work.

See all projects
Main Service Line Soldering — San Mateo, CA
San Mateo, CA
Main Service Line Soldering
Outdoor main water line copper soldering and backflow valve installation.
Engineered Water Distribution Manifold — Atherton, CA
Atherton, CA
Engineered Water Distribution Manifold
Parallel copper and PEX distribution manifold with balanced isolation valves.
High-Flow Bathroom Supply Risers — San Carlos, CA
San Carlos, CA
High-Flow Bathroom Supply Risers
Surgically framed PEX-a supply loops with anti-water-hammer arrestors.
Multi-Zone Copper Risers — Burlingame, CA
Burlingame, CA
Multi-Zone Copper Risers
Heavy commercial copper distribution risers and acoustic sound-dampened framing.
FAQ

Whole-Home Copper — questions we get

How do I know if my home needs a full repipe?
Key warning signs include: brown or yellow-tinted water when turning on faucets after hours of disuse, sudden drops in shower water pressure when someone runs the dishwasher or flushes a toilet, recurring pinhole leaks along copper or galvanized pipes, or original plumbing lines older than 40–50 years.
Which is better for Peninsula homes: Copper or PEX-a?
Both are excellent modern choices. Uponor PEX-a is flexible, requires fewer joints inside walls, expands up to 3x its diameter to resist winter freezes or seismic ground motion, and is completely immune to pitting corrosion caused by municipal chloramines. Type-L copper is rigid, UV-resistant, and ideal for exposed mechanical loops and outdoor connections. We often engineer hybrid systems that leverage the strengths of both materials.
Will my family have water during the repiping process?
Yes! We understand the importance of living comfortably during a remodel. Our crews schedule work so water service is restored at the end of every workday, ensuring you have functional water each evening and morning throughout the project.
How long does a whole-home repipe take?
A typical single-family home (2 to 3 bathrooms) takes between 3 to 5 working days from initial drywall access through pressure testing and city inspection, with an additional 1 to 2 days for drywall patching and texturing.
Peninsula Dispatch

Whole-Home Copper across Sixteen Peninsula cities.

Our licensed crews operate from Belmont, dispatching fully equipped service vehicles to residential and commercial properties throughout San Mateo and Santa Clara counties.

Next step

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