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Moisture Detection Services

Compare infrared, capacitance and nuclear moisture surveys for roofs, walls and plaza decks — what each method proves, what it misses and when to verify.

Inspec’s moisture detection services help building owners, property managers, and engineers identify hidden moisture in roofs, walls, and building assemblies. Our team uses non-destructive testing tools to locate moisture buildup early—before it causes mold, material failure, or expensive repairs.

Non-Invasive Moisture Detection Methods

  • Infrared thermography & electronic moisture surveys
  • Core sampling and humidity measurement
  • Spray rack and water hose testing
  • Flood testing and sensor-based leak tracing

Learn how infrared scanning supports moisture assessment through building science principles.

Why Choose Inspec for Moisture Detection?

  • Founded in 1973, with decades of experience in roof and envelope diagnostics
  • Non-biased third-party evaluations—not tied to repair work
  • Certified inspectors with moisture intrusion expertise
  • Detailed reports with photos, moisture maps, and recommendations

Moisture intrusion is often invisible from the surface. With our proven techniques, you can avoid guessing—and instead build a plan backed by data. Whether you’re planning a re-roof, verifying a repair, or preparing for litigation, our evaluations give you clarity and control.

Explore more at Inspec: Roof Inspection, Building Envelope Testing, and Forensic Investigation.

Frequently Asked Questions

What tools do you use for moisture detection?

We use infrared cameras, handheld moisture meters, electronic leak detection (ELD), and core samples to assess trapped water in walls and roof systems.

Do you inspect interior walls and ceilings for hidden moisture?

Yes. We inspect both exterior envelopes and interior drywall to identify concealed water damage caused by roofing leaks, condensation, or plumbing issues.

Can your findings support legal or insurance claims?

Absolutely. Our reports are often used in mediation, litigation, and insurance documentation to prove moisture intrusion causes and responsible conditions.

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Have a building we should look at?

Tell us about the building and what you are seeing. Our consultants work across Chicago, Milwaukee and Minneapolis.

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Common questions

Which moisture survey method is best?
There is no single best method. Infrared, capacitance and nuclear surveys each respond to different properties and each fails under different conditions, so the assembly, its coverings, the deck type and the weather on the day decide the choice. Most reliable surveys combine a sweep method with a second check and confirm the result with test cuts.
Does infrared thermography detect water directly?
No. Infrared measures surface temperature. Wet insulation holds heat longer than dry insulation, so the camera infers moisture from that lag. It needs a dry surface, a real temperature differential and an assembly that transmits the signal. Ponded water, shadows, patches and foil facers all create thermal patterns that are not moisture.
Why do you take test cuts if the survey is non-destructive?
Every non-destructive method reads a proxy for water rather than water itself, so the readings need calibration. Cuts at flagged and unflagged locations confirm what is actually in the assembly, show how far moisture has travelled between layers and reveal the deck condition. Cuts are patched watertight before we leave the roof.
Can a moisture survey find the leak?
Not on its own. A survey maps where water has collected, which is often well away from where it entered. Locating the entry point takes tracing, water testing or membrane breach detection, and understanding why it entered takes investigation of the details, flashings and terminations involved.