Slab Leak Detection & Repair — Los Angeles & the Valleys
Slab Leak? We Find the Exact Spot Before We Touch Your Floor.
Electronic and acoustic detection pinpoints the leak under your foundation — so we open the smallest area possible, fix it right, and give you a written price up front. Licensed, family-owned, serving LA since 1997.
Book an Appointment
Slab Leak Check — Confirmed Within 1 Hour
🔒No obligation. Confirmed within one hour. Never shared.
Signs of a slab leak repair
A warm spot on the floor (classic hot-water slab leak)
Water bill jumped with no change in usage
Sound of running water when everything is off
Water meter still spinning with all fixtures closed
Damp carpet, warped flooring, or a musty smell
New cracks in flooring or drywall
Don’t jackhammer blind. We locate it first.
Why LA slab homes leak
Slab-on-grade construction went up all over the LA basin and the Valleys from the 1950s through the 1970s, and those homes share a common failure: copper supply lines running under or through the concrete. Over decades, three things get them — abrasion where the pipe rubs against concrete as the house moves, corrosion from soil chemistry, and hot-water-side pinholes (the hot line almost always fails first, which is why a warm floor spot is the classic symptom). Add Southern California’s ground movement and hard water, and you get the calls we run every week. The right response is never “start breaking concrete” — it’s locate the leak precisely, then choose the least destructive fix.
Your three options
When it makes sense
SPOT REPAIR
One isolated leak in an otherwise sound pipe. Open a small section, repair, patch.
Reroute (bypass)
Leak is under a hard-to-reach spot (kitchen island, under cabinets). We abandon that segment and run a new line through the wall/attic — often less invasive than digging.
REPIPE
Repeated leaks, or aging pipe throughout. Fixing one pinhole in a failing pipe just buys you months.
We’ll show you what we found and tell you honestly which one your home actually needs — including when the cheapest option is the right one.
What we do
Electronic + acoustic leak location
Pinpoint hidden leaks without unnecessary digging or damage.
Targeted slab access & repair
Access the exact area needed to repair leaks under your slab.
Reroute/bypass lines
Reroute damaged plumbing to avoid costly or recurring slab repairs.
Documentation for your insurance claim
Provide clear documentation to help support your insurance claim.
How it works
Call/request online
Confirmed within one hour.
We pinpoint the leak
No guesswork, no exploratory demolition — and a quote in writing.
We repair, reroute, or repipe
Your choice, our honest recommendation — guaranteed.
Cost of tankless water heater repair
Detection is a modest flat rate; the repair is quoted in writing once we know exactly where and what it is. A spot repair is the least expensive path, a reroute is mid-range, and a repipe is the largest but ends the problem permanently. Many homeowners’ policies cover part of the access/repair — we document the leak so you can file. You approve before we start.
Why LA chooses Advantage Plumbing & Rooter
24/7 real people
Written prices up front
Licensed CA #1067555
Family-owned since 1997
Pinpoint-first (minimal demolition)
Workmanship guarantee
Rated 5.0 ★ across 300+ reviews
Frequently asked questions
Find and Fix That Slab Leak — Confirmed in 1 Hour
Book an Appointment
Slab Leak Check — Confirmed Within 1 Hour
🔒No obligation. Confirmed within one hour. Never shared.
