How It Works

How does Thermal Imaging work to find moisture in an insulated roof?

The sun heats the roof during the day
The surface and the insulation below absorb energy from the sun (during a sunny day)

Wet insulation holds this energy longer than dry insulation

Infrared Thermal Imaging can see this heat (energy) differential

After the sun sets and the roof's surface begins to cool, surface areas with dry insulation underneath cool off quickly because less heat (stored energy) is present in dry insulation

Wet insulation holds this heat (energy) longer, so it takes longer for this energy to be released from the areas with wet insulation

Soon after the sun goes down, the heat signature of wet insulation can be seen with an infrared camera (see image below)