A repipe is a serious job, and no honest plumber recommends one lightly. But patching a system that has started failing is money spent on a countdown. Here is how to tell which situation you are in.
1. More than one pinhole leak in two years
A single pinhole in copper can be bad luck. A second one in a different part of the house is not. It means the whole system has reached the same stage of corrosion, and the next leak is a matter of when.
In Palm Beach County this shows up most in homes from the 1950s through the 1970s, where copper was run through or under the slab. Hard water works on it from inside, damp concrete from outside.
2. Brown or rusty water at multiple fixtures
If discolored water appears only from the hot side, that is usually the water heater. If it appears at several fixtures on both hot and cold, especially on the first draw of the morning, the pipe itself is corroding.
Galvanized steel is the usual culprit. It rusts from the inside and sheds that rust into your water. Homes built before the mid-1950s often still have it.
3. Pressure that has slowly dropped for years
Galvanized pipe closes with rust. A three-quarter inch line can narrow to a quarter inch of open channel with no external sign. The decline is gradual enough that households adjust without noticing, until two fixtures cannot run at once.
Before assuming the worst, we test at the meter and at fixtures. Sometimes it is a failing pressure-reducing valve, which is a far smaller job.
4. Polybutylene anywhere in the house
Grey polybutylene pipe was installed widely in Florida from the late 1970s into the mid-1990s. It fails at the fittings, often with no warning at all. Many insurers will not write or renew a policy on a home that still has it.
If you find grey plastic pipe with crimped fittings, replacement is not really optional. It is a matter of scheduling.
5. Repeated slab leaks
Once a home has had two or three slab leaks, spot repairs stop being economical. Each one means locating, cutting concrete, repairing and patching. A repipe that abandons the under-slab lines entirely and routes new pipe overhead ends the cycle permanently.
6. Visible corrosion on exposed pipe
Look at the pipe where it is visible: at the water heater, under sinks, in the attic. Green crust on copper, white mineral buildup at joints, or flaking rust on steel all say the same thing about the pipe you cannot see.
7. Pipe noise that keeps coming back
Banging, whistling or knocking often means loose supports, high pressure or narrowed pipe. Individually each has a fix. Together with any of the signs above, they point at the system rather than a single component.
Choosing the material
PEX and copper are the two realistic choices for residential repiping in South Florida.
PEX is flexible, installs faster, needs fewer fittings inside walls, resists scale, and handles slab and attic conditions well. It costs less in both material and labor. For most homes here it is the sensible pick.
Copper is rigid, long proven, and preferred by some homeowners for exposed runs and resale perception. It costs more and takes longer to install. It also remains vulnerable to the same water chemistry that caused the original problem, which is worth thinking about.
CPVC sits in the middle. It is common in Florida and performs adequately, though it becomes brittle after long exposure to attic heat.
What the job actually involves
A typical single-family repipe takes two to four days. New lines are routed through the attic and down inside walls to each fixture, which means small drywall openings rather than opening whole walls.
The work sequence is straightforward: plan the routes, protect floors and furniture, run and connect the new lines, pressure test, pass inspection, then patch and texture the drywall. Water is normally restored at the end of each working day, so almost nobody needs to move out.
Permits are required in Boynton Beach and throughout Palm Beach County, with an inspection before walls are closed.
What it is worth
Beyond ending the leaks, a repipe restores full pressure, removes the risk of the next slab leak, and clears an insurance obstacle if polybutylene was present. It is also a documented improvement at resale, which matters in a market where buyers ask about pipe age.
If you are seeing two or more of the signs above, get an assessment. A good plumber will tell you honestly if you have five more years, and that answer costs nothing.