Many times thermal imaging is used to find moisture behind walls and in areas that are not able to be reached. But how does it do this?
First of all, thermal imaging is used to see temperature differentials (i.e. the difference in temperatures) of different items. So if something is hot, it will show up as red on most infrared cameras. If something is colder, it will show up on most infrared cameras as blue.
So when looking for moisture in walls and ceilings, most thermographers are looking for blue spots. That is because as water evaporates, it cools. Even room temperature water inside of a wall will have a cooling effect as it evaporates.
So to find moisture in a wall or ceiling surface means finding the “blue spots”. It is obviously much more complicated than that, but this helps answer the basics of this question.
The fact is, even though thermal imaging can’t see through walls, it is an amazing tool that can help find defects that would otherwise never be found.
So if you are in need of thermal imaging services, contact us. We are experienced thermographers and we have sophisticated thermal cameras than can pinpoint issues far more accurately than most other cameras. We look forward to working with you!