Repipe
Replacing all (or most) of a home's water-supply pipes at once, usually in PEX or copper.
A repipe is the replacement of a home's water-supply piping — the lines that carry pressurized hot and cold water to every fixture — rather than a single patch. Homeowners repipe when the original material is failing across the whole system: corroding galvanized steel, leak-prone [polybutylene](/glossary/polybutylene), or recalled Kitec. Most repipes today use PEX (flexible and cheaper) or copper (rigid and long-lived), and because plumbers have to open walls and ceilings to reach the pipes, drywall repair is a real part of the bill. See the full breakdown in our [cost to repipe a house](/guides/cost-to-repipe-a-house) guide, and the warning signs in [low water pressure](/guides/low-water-pressure).