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Repiping a house sounds dramatic, and expensive, until you tally up what you've already spent patching the same plumbing problems year after year. For many older Treasure Valley homes, especially in the Boise North End, East End, the Bench, and older parts of Nampa and Caldwell, repiping is the move that finally ends the cycle of leaks, low pressure, and rust-stained sinks. Here are the five signs we look for.
1. You Have Galvanized Steel Supply Lines
Galvanized pipe was standard in homes built before about 1970. Inside the pipe, the zinc coating breaks down and the steel corrodes, building up scale that restricts flow and contaminates water with rust. We routinely see Boise galvanized lines down to a pencil-thin interior diameter after 60+ years. Once that corrosion starts, it doesn't stop. Repiping with PEX or copper is the only permanent fix.
2. Recurring Leaks at Multiple Locations
One leak is a repair. Three leaks in two years, in different spots, is a system telling you it's done. When the failure pattern is "first one place, then another," the entire pipe is past its service life. Spot-repairing each new failure only buys time while drywall damage and insurance claims pile up.
3. Rust-Colored or Discolored Water
If your cold water comes out tinted brown or yellow, especially after the system has sat overnight, corroded supply lines are shedding rust. (If only the hot water is discolored, the problem is usually the water heater tank, not your pipes.) Persistent discolored cold water across multiple fixtures is a repipe signal.
4. Chronically Low Water Pressure
If pressure has gradually dropped over years (not suddenly), and a new pressure regulator and water-heater flush didn't help, scale buildup in the supply lines is the most common cause. By the time pressure is visibly affected, the interior pipe diameter is significantly reduced. New piping restores design pressure throughout the home.
5. You're Already Opening Walls
If you're remodeling a bathroom or kitchen, or just renovating a basement, the marginal cost to repipe that section drops dramatically because the walls are already open. Most of our planned Boise repipes happen during a remodel, not as standalone emergencies.
What Material Should You Repipe With?
In the Treasure Valley we recommend PEX-A for most residential repipes. It's freeze-resistant, flexible enough to snake through existing walls with minimal demolition, doesn't corrode, and carries a long manufacturer warranty. Copper still has a place for exposed runs and certain commercial applications, but for whole-home residential repipes, PEX is faster, cleaner, and longer-lasting.
What a Repipe Actually Involves
A typical Treasure Valley whole-home repipe takes 2–5 days depending on size. We protect floors, cut access holes where needed, run new lines, inspect, pressure-test, and patch drywall. You're usually without water for only a few hours at a time. Permits and city inspection are included.
Free In-Home Evaluation
Mountain Time Plumbing performs free in-home repipe evaluations across Boise, Meridian, Eagle, Nampa, Caldwell, Garden City, and the rest of the Treasure Valley. We'll inspect your supply lines, test pressure and flow, and give you a written fixed-price quote with no pressure. Call (208) 993-0717.
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