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Pricing & Estimating 8 min read • Jun 18, 2026

Whole-House & Commercial Plumbing Repipe: PEX vs. Copper Costs in Texas

Replacing failing galvanized pipes or defective polybutylene with PEX-A or copper. Slab leak bypasses, wall penetration repair, and Texas contractor pricing.

Under-slab plumbing leaks in Texas cause foundation movement and devastating water bills. Overhead attic repiping with PEX-A bypasses defective lines without tearing up interior flooring.

PEX-A vs. Type L Copper Comparison

  • PEX-A (Expansion PEX): Supreme freeze flexibility, smooth interior walls resist hard water calcium buildup, 25-year manufacturer warranties.
  • Type L Hard Copper: Rigid, proven 50-year track record, but vulnerable to pinhole corrosion from aggressive municipal chloramines and burst pipes during hard freezes.

Frequently Asked Questions

How much does it cost to repipe a house in Texas?

Repiping a typical 2-bath Texas home with Uponor PEX-A through the attic averages $4,500 to $8,500. Repiping in rigid Type L copper costs $8,000 to $14,000. Drywall patching and painting typically add $1,000 to $2,500.

Why is PEX preferred over copper in Texas?

PEX-A (expansion PEX) expands up to 300% without rupturing during winter freezes, resists mineral scale in hard water, has zero solder joints inside walls, and routes easily through attic spaces without jackhammering foundation slabs.

What are warning signs that a Texas home needs a repipe?

Low water pressure when running multiple fixtures, rust-colored water, recurring pinhole leaks in copper or galvanized lines, or foundation slab leaks.

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