Warm spot on the floor, a water bill that jumped, or the sound of running water under the slab? We pinpoint under-slab leaks the same day — without tearing up your whole floor — and repair them with a spot fix, reroute, or trenchless lining at an upfront price.
A true slab leak is a leak in a water line beneath a concrete foundation slab. But a lot of Portland homes — especially older ones — sit on a crawl space or basement, not a slab. If your home has a crawl space, the leak isn't under a slab at all, and it's usually easier (and cheaper) to reach.
Slab-on-grade foundations show up most in mid-century ranch homes, room additions, garages, and newer construction. We'll confirm what you've got before recommending any concrete work.
Not sure, or you have a crawl space? Start with our leak detection service.
Under-slab copper lines fail from abrasion (pipe rubbing on concrete or rebar as water flows), corrosion, and high water pressure. Portland's expansive clay-silt soils and seasonal wet-dry cycles add foundation movement and settlement that stresses the pipe, and poor original installation can speed any of it along.
We locate the leak before touching the concrete, using acoustic listening, infrared thermal imaging, pressure testing, and electronic line tracing. That accuracy means we open only the one spot that needs repair — not the whole floor.
More on our tools: leak detection.
There's no one-size fix. We recommend the most cost-effective option that lasts for your pipe and your home.
Open the one located spot, repair the failed section, and patch. Best for a single isolated leak in otherwise sound pipe.
Abandon the bad under-slab line and run a new one overhead or through walls — no breaking the floor. Great when access is hard or the line has leaked before.
A trenchless liner cured inside the existing pipe forms a new pipe-within-a-pipe — ideal for longer straight runs.
When the system has multiple leaks or aged pipe, a full repipe in PEX or copper is the permanent fix. Repiping
One leak in good copper → spot repair. Recurring leaks or hard access → reroute. Long straight run → epoxy lining. Multiple leaks or old pipe → repipe. We'll show you the trade-offs and price each honestly — we won't default you to the most expensive option.
| Leak detection / locating | $150 – $400 |
| Spot repair (isolated leak) | $500 – $1,500 |
| Pipe reroute | $1,500 – $5,000 |
| Epoxy / trenchless lining | $500 – $4,000 |
| Whole-home repipe | $4,500 – $15,000 |
Most homeowners land between $1,500 and $4,500. Estimates for guidance only; you get an exact quote after we pinpoint the leak. Financing available on larger jobs.
Homeowners policies often cover the sudden, accidental water damage and the cost to access and restore the slab — but typically not the pipe repair itself or slow wear-and-tear corrosion.
We document the cause and give you an itemized invoice to support your claim, and can coordinate water-damage drying if needed.
Don't let an under-slab leak erode your foundation. We pinpoint it the same day and fix it the least-invasive way — upfront pricing, no jackhammering until we know exactly where.
From the first call to a clean finish, our licensed Portland plumbers handle slab leak repair with upfront, flat-rate pricing and no overtime fees — day, night, weekends and holidays.
Call (971) 386-1515Not sure if it's a slab leak? Call and we'll confirm — same day.
A leak in a water line beneath your home's concrete foundation slab. Because the pipe is encased in concrete, water escapes up into the floor or out into the soil — causing warm floor spots, high bills, and foundation damage.
Many don't — a lot of Portland's older homes sit on a crawl space or basement, not a slab. Slab-on-grade is more common in mid-century ranches, additions, garages and newer builds. If you have a crawl space, see our leak detection page.
A warm spot on the floor, a spiking water bill, the sound of running water with everything off, damp or buckling flooring, low pressure, new cracks in the slab or walls, and a musty smell.
We pinpoint it first with acoustic listening, infrared thermal imaging, pressure testing and electronic line locating — accurate to within inches — so we open only the spot that needs repair.
With a spot repair (open and fix one spot), a pipe reroute (abandon the bad line, run a new one overhead), epoxy pipe lining (a trenchless liner cured inside the pipe), or a full repipe if the system is failing.
One isolated leak in sound copper → spot repair; recurring or hard-to-access line → reroute; long straight run → epoxy lining; multiple leaks or aged pipe → repipe. We recommend the most cost-effective option that lasts.
Detection $150–$400; spot repair $500–$1,500; reroute $1,500–$5,000; full repipe $4,500–$15,000. Most homeowners land $1,500–$4,500. You get an exact quote after we pinpoint the leak.
Policies often cover the sudden, accidental water damage and the cost to access and restore the slab, but typically not the pipe repair itself or wear-and-tear corrosion. We document the cause for your claim.
Handle it quickly — it erodes soil and damages the foundation — but most homeowners can stay home, especially with a reroute that avoids breaking the floor. Shut off your water if flooding and call for same-day detection.
A spot repair on aging copper can re-leak elsewhere on the same line, which is why we recommend a reroute or repipe when the pipe is old or has leaked before. New PEX or copper reroutes stay leak-free for decades.