Infrared Roof Leak Inspection

Wet insulation holds and releases heat differently than dry insulation. An infrared camera picks up on that difference, showing wet areas as a different color or temperature pattern on the thermal image — even though the surface looks completely uniform to the naked eye.

Infrared inspections work best after the roof has absorbed heat during the day and is starting to cool — typically early evening — because that’s when the temperature contrast between wet and dry areas is most visible. This makes it a great complement to moisture scanning rather than a replacement for it; we often use both together for larger commercial roofs or roofs with a history of repeat leaks.

The result is a clear map of exactly where water has infiltrated the system, which lets us target the repair precisely instead of guessing based on where the ceiling happens to be stained.

Why Timing Matters for Infrared Inspections

Infrared imaging relies on temperature differences between wet and dry areas of the roof, and those differences are clearest during specific conditions — typically after the roof has absorbed heat during a sunny day and is beginning to release it as temperatures drop in the evening. Wet insulation retains heat differently than dry insulation, which is what shows up as a contrast on the thermal image.

Scanning at the wrong time of day, or on a heavily overcast day with little temperature differential, produces a much less useful image. We schedule infrared inspections with this timing in mind rather than running the scan whenever happens to be convenient, since a poorly-timed scan can miss real problems.