Because of the various state and federal tax incentives available for fixing energy leaks in buildings, the use of infrared cameras is definitely on the rise. But IR scanning can also be used for another, less-well-known purpose: finding the source of common moisture problems.

Using thermal imaging in this way — to investigate water leaks in buildings — is nothing new. The only reason the practice isn’t more widespread is that IR cameras are thought to be very expensive. However, prices have been dropping over the past few years, thanks to new sensor technology and increased mass production, and now even entry-level...

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