The short answer
Consider repiping when you see repeated leaks, discolored water, or dropping pressure in a home with galvanized steel, polybutylene, or aging cast-iron pipe. These materials fail with age — replacing them with copper or PEX ends the cycle of patch repairs.
What is repiping, and why do older homes need it?
Repiping replaces a home's worn supply (or drain) piping rather than patching one failure at a time. Many metro-Atlanta homes were built decades ago, and the original piping material is now near or past the end of its service life.
The materials that most often drive a repipe:
- Galvanized steel — corrodes and clogs from the inside, choking pressure and discoloring water
- Polybutylene — a gray plastic pipe used in some late-20th-century homes that is prone to failure
- Aging cast iron drains — crack, scale, and corrode over time
What are the warning signs?
Any one of these is worth an inspection; several together point toward repiping:
- Brown, yellow, or metallic-tasting water, especially on the hot side
- Recurring pinhole leaks or a history of patch repairs
- Water pressure that keeps dropping over the years
- Visible corrosion, flaking, or rust at exposed pipes and fittings
- Pipes that bang or knock, or that you simply know are galvanized or polybutylene
What happens if you keep patching instead?
Spot repairs on a failing system buy time, but the next leak is rarely far behind — and a hidden supply-line leak inside a wall or under the slab can cause expensive water damage before you ever see it. At some point, the cost and risk of one-off repairs exceeds the cost of replacing the system once, correctly.
Watch for a slab leak
A warm spot on the floor, the sound of running water with everything off, or an unexplained bill spike can signal a slab leak — a supply-line leak under the foundation. It deserves prompt, professional leak detection.
What does a proper repipe deliver?
A well-planned repipe restores strong, clean, reliable water and resets the clock with modern copper or PEX. A licensed plumber maps the system, protects your finishes, pulls the required permit, and confirms the work passes inspection.
Head's Plumbing has repiped Atlanta homes for generations. We will tell you plainly whether a targeted repair is enough or whether a full repipe is the better long-term investment for your home.
A plumber can identify the material at exposed runs (basement, crawl space, water heater connections) in minutes. Galvanized steel looks dull gray and is magnetic; polybutylene is usually gray plastic; copper is reddish; PEX is flexible plastic.
Often, yes. Experienced plumbers plan access points to minimize wall openings, and we protect and clean up the work areas. The scope depends on your home's layout and which lines are being replaced.
Not always — it can also follow municipal work or water heater sediment. But persistent rusty water, especially with low pressure, often points to corroding galvanized pipe and is worth an inspection.
Terms in this guide
- Repipe
- Replacing some or all of a home's supply (or drain) piping. Older Atlanta homes often have galvanized steel, polybutylene, or cast iron that corrodes or fails with age; a repipe swaps it for modern copper or PEX.
- Slab leak
- A water-line leak in or beneath the concrete foundation slab of a home. Common signs include a warm spot on the floor, the sound of running water with everything off, an unexplained spike in your water bill, or cracking in the slab.
- Pressure-reducing valve (PRV)
- A valve that lowers and stabilizes incoming municipal water pressure to a safe level (typically 50–75 PSI). Too-high pressure stresses fixtures, water heaters, and joints, and can void appliance warranties.
- Water service line
- The pipe that carries clean water from the city main (or your well) to your home. When it leaks or fails, it can cause low pressure, soggy spots in the yard, or a high water bill.