Copper Repiping: The Gold Standard
Copper has been used in home plumbing for over a century. It is a rigid, durable metal that is joined together by soldering (sweating) copper fittings. It is highly resistant to bacteria growth and can be used for both indoor plumbing and outdoor exposed lines.
Pros: Extremely long lifespan (50-70+ years), fire-resistant, does not degrade under UV light, and adds recognizable resale value to your home.
Cons: High material cost, labor-intensive installation requiring soldering, and vulnerable to corrosion in highly acidic water environments.
PEX Repiping: The Modern Alternative
PEX is a flexible plastic tubing that has become the dominant choice for residential repipes. Because of its flexibility, PEX can be snaked through walls and joists with minimal drywall cuts, utilizing a manifold layout that routes dedicated lines to each fixture.
Pros: Highly cost-effective material, fast installation with fewer joints, highly resistant to freezing and scaling, and reduces plumbing noise (water hammer).
Cons: Cannot be exposed to direct sunlight (UV rays degrade the plastic), cannot be connected directly to water heaters (requires a copper lead line), and cannot be used outdoors.
Making the Decision
For most modern residential upgrades, PEX repiping is recommended because it is faster, requires fewer drywall cuts, and is significantly more affordable. However, if you prefer a traditional metal pipe, or you are matching existing lines, a professional copper repipe remains a premium, ultra-durable solution.