What Is a Pipe Reroute?
A pipe reroute abandons the failing line inside the slab and installs a new supply line through an above-slab path — typically the attic, interior walls, or a combination of both. The old slab line is isolated and capped at both ends. The new line uses PEX or CPVC tubing and connects to the same fixtures or zones the old line served.
The result is a line that is accessible for future service, installed in a path that bypasses the corrosive soil and hard water contact zone that caused the original failure, and completed without opening the concrete slab at all.
When a Reroute Makes More Sense Than a Spot Repair
A spot repair fixes the single known breach. A reroute addresses the entire pipe from supply to fixture. For most Perris homes in the 2000 to 2009 build window, the pipe that failed has the same water exposure history as every other line in the slab — which means a second spot repair is likely within a few years. Here are the situations where a reroute is typically the better value:
- The copper pipe is 18 or more years old with Perris water conditions
- The failed section is under tile, hardwood, or another flooring finish that is expensive to patch
- A second leak has already occurred on the same property
- The breach is at a joint or transition fitting, which often indicates wider stress along the line
- Attic access is good and the reroute path is straightforward
What the Reroute Process Looks Like
- Confirm and locate: Detection first. We confirm the breach and identify which line is failing before a reroute is quoted.
- Plan the path: We identify the most direct attic or wall route from the supply stub to the fixture or zone being served. For typical Perris single-story homes with good attic access, this is usually a 2 to 4 hour job.
- Install new line: PEX or CPVC is run, connected, and secured. Penetrations through top plates are sealed.
- Isolate the old slab line: The old copper is capped at both ends and de-pressurized. It stays in the slab but carries no water.
- Pressure test: New line is pressure tested before the appointment is considered complete.
- EMWD paperwork: We prepare the billing adjustment paperwork for EMWD before we leave.
Frequently Asked Questions
For most single-story Perris homes, yes — the attic is the most direct and cost-effective reroute path. In two-story homes or where attic access is restricted, interior walls may be used. We identify the route during the estimate so you know where the new pipe will run before work begins.
Yes. The old slab line is capped at both ends and left in the concrete. It carries no water and has no effect on the new line. Removing it would require opening the slab, which defeats the purpose of the reroute.
Yes. PEX tubing has no copper content, so it is not subject to the same pinhole corrosion that hard Perris water causes in copper. The new above-slab line is also not in contact with the expansive clay soil that abrades pipes from the outside. A properly installed reroute does not require a follow-up repair for the same line.