Direct Answer
AnyLeak provides leak and moisture detection services in British Columbia using non-invasive methods — acoustic correlation, tracer gas, thermal imaging, and moisture metering — to find leaks without digging or damage. Every inspection includes a written, insurance-ready report. Call (604) 269-5325 for a free phone consult.
🔄 Reviewed and maintained by the AnyLeak team — October 2026. Rated 5 stars by BC customers.
Concrete slab leak detection achieves its highest accuracy and confidence when two complementary methods are used together: ground-penetrating radar to map the subsurface pipe layout and identify moisture-related void formations, and acoustic correlation to precisely locate the active pressurised leak source within the pipe system. AnyLeak routinely combines acoustic and GPR methods for complex BC slab leak investigations, eliminating the ambiguity that comes from relying on a single method and reducing the number of access cuts required to achieve a confirmed repair.
Why a Single Method Is Rarely Enough for Slab Leak Detection
Acoustic correlation alone can locate a pressurised leak within a pipe to within 0.5 m, but it cannot show where the pipe runs relative to rebar, conduit, and PT cables that must be avoided during the repair excavation. GPR alone can map the pipe route and identify void formations, but it cannot confirm whether a pipe is actively leaking or merely showing evidence of past moisture exposure. Using both methods in sequence — GPR to map the layout, acoustic to confirm the active source — produces a combined result that is more reliable and actionable than either method alone.
The AnyLeak Combined Investigation Sequence
AnyLeak’s combined slab leak investigation begins with GPR scanning of the area of concern to map the pipe route, identify any associated void or moisture accumulation zones, and document the surrounding reinforcement layout. This data guides acoustic sensor placement at the closest accessible connection points on either side of the suspect zone. The acoustic correlator then identifies the precise leak position along the mapped pipe route. The two datasets are overlaid and delivered as a single annotated plan showing the pipe route, the acoustic leak position, and the surrounding structural elements to avoid during repair.
Combined Method for Post-Tensioned and Heavily Reinforced Slabs
Post-tensioned slabs and heavily reinforced concrete floors present the highest-risk environment for concrete excavation without complete subsurface knowledge. AnyLeak’s combined acoustic and GPR approach provides both the active leak location and the complete structural element map in the repair zone, giving the plumbing contractor and structural engineer the information needed to plan a safe, targeted repair access cut that avoids PT cables, rebar, and other embedded elements.
Acoustic Slab Leak Detection for Hydronic Systems
In-slab hydronic heating and cooling systems use PEX or copper tubing embedded in concrete that is not amenable to acoustic correlation alone in plastic tube configurations. AnyLeak combines GPR tube route mapping with tracer gas injection for plastic in-slab hydronic systems, and acoustic correlation for metallic in-slab hydronic systems, delivering the appropriate combined method for the specific system type and producing a precise leak location with surrounding structural context.
Why BC Property Owners Choose AnyLeak
- Ground-penetrating radar + acoustic + thermal — complete concrete scanning toolkit
- Certified leak detection specialists serving BC since 1999
- Written reports for engineering, insurance, strata, and structural consultants
- Metro Vancouver, Fraser Valley, Victoria, Kelowna, and across BC
Contact AnyLeak at (604) 269-5325 or info@anyleak.ca to schedule a concrete scanning assessment.
Frequently Asked Questions
Does combining GPR and acoustic increase the investigation cost significantly?
The combined approach typically adds 30-50% to investigation cost compared to a single method, but reduces the risk of misidentified sources and unnecessary concrete removal. The cost of a misidentified repair — opening the slab in the wrong location — consistently exceeds the additional investigation cost.
Can the combined approach locate leaks under occupied building spaces?
Yes. Both GPR and acoustic methods are non-invasive and work through finished floor surfaces in many cases. Where direct concrete surface access is required, we coordinate access with the building occupants.
How does acoustic correlation work with GPR in the same investigation?
GPR is run first to map the pipe route and identify the highest-probability leak zone. Acoustic sensors are then placed at accessible connection points on either side of the identified zone. The correlation result positions the leak on the GPR-derived pipe map, providing a combined product.
Is this method suitable for investigating an in-slab radiant heating leak?
Yes. For PEX radiant heating systems, we use GPR tube mapping combined with tracer gas injection. For copper radiant systems, GPR and acoustic correlation are combined. Both approaches are significantly more accurate than probing or thermal imaging alone for in-slab hydronic leaks.
A Closer Look at This Service
Water does not negotiate. It moves along the path of least resistance, and every day it moves, the damage grows. The question is not whether to investigate; it is when, and the answer is always sooner rather than later.
A city’s building code, its typical construction era, and its soil behaviour all leave their fingerprints on the leaks it produces. Reading those fingerprints is what makes an investigation accurate on the first visit.
A professional investigation does not end with a verbal summary. It ends with a written report, and that report is the point of the exercise: a document that carries the finding, the evidence, and the guidance to the repair.
How the Investigation Is Delivered
Every investigation follows the same disciplined sequence: consultation, survey, testing, cross-verification, marking, and documentation. The sequence is deliberate, and each step builds on the last.
- Step 1: Consultation to understand the situation and the history
- Step 2: Site survey and indicator mapping
- Step 3: Testing of the suspected systems with matched methods
- Step 4: Cross-verification of the finding
- Step 5: Marking and documentation
- Step 6: Written, dated report
The most common mistake is waiting: waiting for the stain to dry, waiting for the bill to settle, waiting for the leak to announce itself. Water does not wait, and every week of waiting grows the repair scope.
What This Costs
Most property-level investigations in British Columbia are quoted as a fixed fee once the situation is understood. The quote covers the technician’s time, the instruments, the investigation, and the written report.
The comparison that matters is not detection cost versus no cost; it is detection cost versus the cost of an undetected leak. One targeted repair, guided by an exact location, almost always costs less than exploratory work and repeated damage.
Insurance and Documentation
Insurance claims fail most often because of missing documentation. A dated, photographed, method-by-method report removes that failure point and gives the adjuster a professional document they can rely on.
Insurance claims fail most often because of missing documentation. A dated, photographed, method-by-method report removes that failure point and gives the adjuster a professional document they can rely on.
What the Report Includes
The report is written in plain language first and professional language second. Owners read the conclusion and the cause; contractors and adjusters read the method notes and the readings. Both are in the same document.
Reports are dated and structured so that any licensed contractor can take the marked location and proceed directly to the repair. They are also accepted by insurers, engineers, property managers, and, when needed, in dispute processes.
When to Call
Call when the indicator is persistent, when it repeats after a repair, or when it is accompanied by a second indicator. A single passing event can be a coincidence; a pattern is a leak.
Call when the indicator is persistent, when it repeats after a repair, or when it is accompanied by a second indicator. A single passing event can be a coincidence; a pattern is a leak.
How to Prepare the Property
Clear access to the meter, the main shut-off, the water heater, and the areas showing indicators speeds the investigation. A cleared path saves the technician’s time, which is your time on the quote.
The best preparation is information: when the issue started, what changed around that time, what the weather did, and what has already been tried. That history is often more valuable than any instrument.
Related Services and Locations
The same standards apply across every service and every community we serve. The links below point to the service pages, city pages, and the site resources most relevant to this topic.
- Water Leak Detection Services in BC
- Underground Water Leak Detection
- Hydrostatic Pressure Testing
- Building Envelope Leak Detection
- Moisture Detection
- Our Guarantee
- How Leak Detection Works
- Reviews
- Contact AnyLeak
Internal links help visitors move between related services and communities, and they help search engines understand how the site’s pages relate to each other.
Common Questions
Is this service non-invasive?
Yes. Every method used works from the surface and leaves no marks. Nothing is cut, dug, or permanently marked during the investigation.
How accurate is the location?
With cross-verified methods, locations are typically within a metre or less, and slab locations within inches.
Is the report useful for insurance?
Yes. The report documents the cause, the extent, the methods used, and the readings, structured for claims and engineering review.
How long does an investigation take?
Most property-level investigations complete within a day, and the written report follows within one to two business days.
Do you repair leaks?
No. Detection and documentation are the service. The report guides the repair contractor to the exact location.
What does this cost?
The quote is fixed before work begins, based on the scope defined in the free consultation. What you are quoted is what you pay.
Call (604) 269-5325 or email info@anyleak.ca for a free consultation. The report is dated, documented, and written to the standard insurers and engineers expect.
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