What is a Thermal Imagining Camera and How is it used for a Termite Inspection?



A Thermographic Camera (also called an Infrared Camera or Thermal Imaging Camera) is a device that forms an image using infrared radiation, similar to a common camera that forms an image using visible light.

Instead of the 450–750 nanometer range of the visible light camera, infrared cameras operate in wavelengths as long as 14,000 nm (14 µm)

A thermal camera is an amazing tool when used for termite inspections as they will pick up hot and cold areas in a wall better than any tool currently available.

When the sun heats up a wall, we are able to see an image of the timber wall frames contained inside. Numerous times whilst conducting a Pre-Purchase Inspection, we have identified past termite damage that the seller has tried to hide with new plaster and fresh paint.

We can physically see parts of the timber frame are missing or additional timbers that have been bolted to the frame to brace damaged timber.

Active termite damage with large termite numbers are clearly visible, quickly and easily.

Active termite nests are easily seen like the sun glowing out of the wall.


A word of honest caution…

Thermal cameras are not magic wands!

Thermal cameras pick up temperature changes and as such old termite damage will have very little to no temperature change when next to a clean wall.

If the sun is shining on the wall and we can physically see missing timbers then we will notice past damage hidden behind a freshly painted wall.

Active termites give off heat whether they are attacking a wall or if they are in a nest located in your walls. If they give off heat next to the plaster wall in numbers – we will see them.

A thermal camera will not see 4 or 5 individual termites in your wall, as they will not give off enough heat to be seen.


SILK’S PEST CONTROL – Your Brisbane Termite Experts