Thermal imagery detects temperature behavior
Roof materials heat and cool at different rates. Moisture can change that behavior, but so can ballast, coating differences, repairs, shading, rooftop equipment, thickness changes, and surface contamination.
Interpret patterns in context
Useful interpretation considers roof construction, weather, solar loading, capture time, visual conditions, known leaks, drainage, and repeated pattern shape. Isolated hot or cold pixels are not enough.
Verification changes the language
Before verification, label areas as suspected or anomalous. After appropriate field verification confirms moisture, the finding can become a verified moisture-affected area with quantity and remediation implications.
Practical owner checklist
- Record capture conditions and roof construction.
- Correlate thermal patterns with visual roof features.
- Use suspected-language before verification.
- Document the method and location of any physical verification.
Frequently asked questions
Does a bright thermal area mean wet insulation?
No. It means the area is thermally different and requires interpretation.
What verifies moisture?
Depending on the assembly, verification may include cores, probes, capacitance or impedance screening, test cuts, or other accepted methods.