A confirmed slab leak in a Murray Hill, Sexton Mountain, or Five Oaks Beaverton home creates a repair decision most homeowners have not made before: open the concrete floor at the failure point for a spot repair, or route new pipe above the slab through walls and ceiling spaces. Both approaches solve the immediate problem. The right one depends on factors only apparent after the detection results are in hand.
What the Detection Phase Reveals
Before any repair decision is made, the detection phase needs to answer two questions: exactly where is the failure, and what is the condition of the surrounding pipe system? Electronic acoustic detection locates the failure point -- typically within 6-12 inches through concrete -- and pressure isolation testing identifies which supply branch is affected. A scan of the full supply system after isolation confirms whether other branches show pressure loss indicating additional failures.
If the scan finds only one failure on a 2000s PEX system in Triple Creek, spot repair at the confirmed location is straightforward. If the scan finds two pressure-dropping branches in a 1988 copper system in Murray Hill, the repair conversation changes.
Spot Repair: The Targeted Concrete Access Approach
Spot repair opens the concrete floor at the confirmed failure point -- a core drill of 3-4 inches diameter or a small concrete saw cut -- and replaces the failed pipe section directly. This approach works well when: the failure is isolated and the rest of the pipe system is in good condition; the pipe material is PEX or newer copper (post-1995) with limited soft-water exposure; the flooring above the repair point can be restored cost-effectively; and the home's construction allows adequate clearance for core drill equipment.
Spot repair preserves the existing supply layout and avoids the wall access needed for rerouting. It is the more economical choice when pipe conditions do not indicate a high likelihood of recurrence.
Pipe Rerouting: Bypassing the Slab
Rerouting replaces the failed below-slab supply branch with new pipe routed above the slab -- through the crawlspace below a raised floor, through a wall cavity to the attic, or along a garage wall. No concrete is opened. Rerouting makes more sense when: the pipe is mid-cohort copper in a 1985-2000 Murray Hill or Sexton Mountain home where soft-water exposure is beginning to accumulate failure potential; the acoustic scan found multiple simultaneous failures; the flooring above is continuous hardwood or expensive tile where patching would be visible; or the homeowner wants to eliminate the risk of return concrete access within several years.
The economics: rerouting costs more upfront but eliminates the cost of a second spot repair. For 1985-2000 copper in Beaverton where soft-water exposure is entering its second generation of failure potential, rerouting often costs less over a five-year horizon.
Making the Decision
We present both options with honest cost comparison after the detection results are available. The acoustic scan findings and pipe age are the objective data; the repair choice belongs to the homeowner. For electronic slab leak detection and repair in Murray Hill and all Washington County slab-foundation neighborhoods, call (503) 974-3329.
Frequently Asked Questions
The acoustic scan findings after detection drive this decision. If the scan finds a single isolated failure on a pipe system that is otherwise sound (newer copper or PEX in a 1990s-2000s home), spot repair at the confirmed location is appropriate. If the scan finds two or more failures simultaneously, or if the pipe is older copper where Bull Run soft-water exposure is accumulating, rerouting the affected branch above the slab avoids reopening concrete for a second failure within 18 months.
Spot repair in Beaverton typically costs $800-$2,000 for detection, core drilling, pipe repair, and concrete patching. Pipe rerouting above the slab typically costs $1,500-$4,000 depending on the pipe length rerouted. Rerouting costs more upfront but eliminates the cost and disruption of a second spot repair when a second failure develops -- likely within 12-24 months in a systemic copper failure situation.
Above-slab pipe rerouting that adds new pipe to the supply system typically requires an Oregon plumbing permit. Spot repair inside the existing concrete may not, depending on scope and local interpretation. For any significant repair scope in Beaverton, confirm permit requirements with the City of Beaverton Building Department before work begins.
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