Can roof moisture surveys be flown?

Wet insulation holds heat after sunset, and a radiometric thermal camera sees it from the air in minutes across a roof that would take a crew all day to walk.

What the job actually is

Finding moisture under a membrane today means walking the roof with handheld gear or a contractor's opinion, coring where you guess, and repairing sections whose boundaries nobody actually mapped.

Signs it is worth automating

• Large flat commercial roofs with suspected moisture or chronic leaks.
• A reroofing decision where mapping wet sections could shrink the scope.
• Multiple buildings to survey in one campaign.
• Insurance or warranty documentation demands a defensible map.
• Safety rules make roof walks expensive to staff.

What the cell looks like

A drone with a radiometric thermal sensor flown in the right after-sunset window, producing a mapped thermal mosaic where suspect wet areas are marked and then confirmed by targeted cores. Outdoor flight means airspace and rules: the mission is planned under Part 107, and anything beyond routine gets specialist review before it flies.

When the answer is no

• Ballasted or heavily reflective roofs that defeat thermal reads; a good contractor says so up front.
• You already know the roof is done; skip the survey and bid the replacement.
• The building sits in airspace where the flight cannot be routinely authorized; this is checkable before anyone mobilizes.
• You want structural assessment; that is a different inspection.

What an engineer has to verify

• That the operator flies radiometric thermal, not just a pretty color camera, and delivers calibrated data.
• The weather and time window in the proposal; daytime thermal roof surveys are how you buy noise.
• Core-sample confirmation is included, so thermal suspicion becomes evidence.
• Airspace status over your building before scheduling.

Safety is not on that list because it is not ours to determine. Cell design, guarding and the risk assessment belong to an independent certified integrator, every time.

See it run

Two clips of this job actually running, from two different manufacturers. Both are the makers' own marketing footage, showing a cell under good conditions with a part it was set up for, so watch them for what the motion looks like rather than as evidence of what your rate would be.