Is Your Home Sitting on a Hidden Slab Leak?
NJ's most trusted slab leak detection specialists. Non-invasive technology. Pinpoint accuracy. Same-day service available.
Get Your Free Consultation
Step 1 of 2 — Fill out the form below, then schedule your appointment on the next page.
.hero-ghl-areaSet success URL to:
firstclassleaks.com/thank-you/
📞 732-253-4900
🔒 Your info is private & never shared. By submitting you agree to our Privacy Policy.
6 Signs You May Have a Slab Leak Right Now
Slab leaks silently destroy your foundation, cause mold, and spike your water bill — often for months before you notice. Do any of these sound familiar?
Unexplained High Water Bills
A sudden spike in your monthly bill with no change in usage is a classic early warning sign of a hidden underground leak.
Warm or Damp Spots on Floors
Hot water pipe leaks under the slab create warm patches you can feel through tile or hardwood flooring.
Cracks in Walls or Flooring
Leaking water weakens the foundation, causing visible cracks in walls, floors, and door frames over time.
Mold or Mildew Odors
Persistent dampness beneath flooring creates perfect conditions for hazardous mold growth and musty smells.
Low Water Pressure Throughout Home
A significant pipe leak beneath your slab can dramatically reduce water pressure at faucets and showers.
Hearing Running Water When Nothing Is On
If you hear water running inside walls or under the floor with all faucets off — call us immediately.
Spot Any of These Warning Signs?
Every day you wait, the damage gets worse. Get professional detection today.
How Our Slab Leak Detection Works
Our proven 5-step process gets you answers fast — zero guesswork, minimal disruption to your home or business.
You Call or Book
Reach our NJ team 24/7 by phone or quick online form.
On-Site Inspection
Certified tech arrives and identifies visible signs and risk zones.
Advanced Detection
Acoustic, thermal, and tracer gas tech pinpoints the exact leak.
Detailed Report
Clear written report with photos and recommended repair options.
Repair Coordination
We connect you with trusted plumbers or work with your insurer.
Ready to Find Your Slab Leak Today?
Most inspections completed same-day. Don't let a hidden leak cost you thousands.
Non-Invasive Detection Technology
We use the most advanced, non-destructive methods available — finding your leak precisely without tearing up your floors unnecessarily.
Acoustic Leak Detection
Ultra-sensitive devices detect the sound of water escaping beneath your slab with pinpoint accuracy.
Infrared Thermal Imaging
Thermal cameras reveal temperature anomalies from hot or cold water leaks invisible to the naked eye.
Tracer Gas Detection
A harmless gas injected into pipes and detected above ground locates even the tiniest micro-leaks.
Electronic Pressure Testing
Monitors pressure drops across pipe sections to isolate and confirm the exact location of active leaks.
Moisture Meter Analysis
Advanced sensors measure humidity in flooring, walls, and concrete to map water migration paths.
Correlation Detection
Multi-point acoustic correlation calculates the exact leak position between sensor points mathematically.
The Right Technology Makes All the Difference
Our 99.8% accuracy means one targeted repair — not multiple guesses.
Why NJ Homeowners Choose First Class Leak Detection
New Jersey homeowners trust First Class because we combine the latest technology with honest, transparent service — backed by a 99.8% accuracy rate.
99.8% Accuracy Rate
Multi-technology approach delivers near-perfect leak location results — saving you time, money, and damage.
Zero Unnecessary Demolition
We only cut exactly where the leak is confirmed. No exploratory damage to your floors or walls.
24/7 Emergency Response
Slab leaks don't wait for business hours. Neither do we — nights, weekends, and holidays.
Insurance Claim Support
We work directly with adjusters and provide detailed reports accepted by all major NJ insurers.
15+ Years of Experience
Our certified technicians have resolved thousands of NJ slab leaks across residential and commercial properties.
Upfront Honest Pricing
No hidden fees. No bait-and-switch. You know the cost before we start — guaranteed.
New Jersey's Most Trusted Slab Leak Detection Company
Join thousands of NJ homeowners who trusted First Class to protect their biggest investment.
Common Causes of Slab Leaks in NJ Homes
New Jersey's seasonal freeze-thaw cycles, aging infrastructure, and soil conditions make local homes especially vulnerable.
- Corroded PipesMetal pipes deteriorate from chemical reactions with soil minerals or aggressive water chemistry over time.
- High Water PressureExcessive pressure stresses pipe walls, causing micro-fractures that grow into full leaks.
- Shifting Soil & Foundation SettlingNJ's freeze-thaw cycles cause soil movement that bends and cracks pipes beneath the slab.
- Poor Installation WorkmanshipPipes without proper bedding or inferior materials are prone to premature failure.
- Abrasion & FrictionPipes resting against concrete or gravel slowly wear through the pipe wall over time.
- Thermal Expansion & ContractionHot water pipes repeatedly expand and contract, stressing joints until they eventually fail.
Don't Let a Slab Leak Destroy Your Foundation
Early detection prevents $10,000+ in structural repair costs. Act today.
5-Star Rated Across New Jersey
Don't just take our word for it. Here's what NJ homeowners say after we saved their homes.
"Our water bill tripled in one month. First Class came out same day, found the leak under our kitchen slab in under two hours. Saved our foundation and thousands in repairs."
"Warm spots on my tile floor for months. Two other companies couldn't find it. First Class used their thermal camera and found a hot water leak in 20 minutes. Professional and honest."
"First Class worked directly with my homeowners insurance and got full coverage for repairs. They came on a Saturday night for an emergency. Cannot recommend them highly enough."
Join Thousands of Satisfied NJ Homeowners
Your peace of mind is one call away.
Book Your Slab Leak Inspection
- ✓ Free, no-obligation consultation
- ✓ Same-day & emergency appointments available
- ✓ We work with all NJ insurance companies
- ✓ Serving most of New Jersey
- ✓ Upfront transparent pricing
Request Free Consultation
Quick form — Name, Phone & Email only
732-253-4900
🔒 Your info is private & never shared. By submitting you agree to our Privacy Policy.
Slab Leak Detection FAQ
Still Have Questions? Talk to a Specialist Now
Our NJ team is standing by — no pressure, just honest answers.
Slab Leak Detection Across Most of New Jersey
Based in Englishtown, NJ — our certified technicians travel across most of New Jersey, from the Jersey Shore to North Jersey, Central NJ to South Jersey.
Don't See Your Town? Call to Confirm!
We cover most of NJ — one quick call confirms service at your address.