James,

Good question. First, many SOPs state that the inspector "is not required to..." or that it is a general exclusion, but not that the HI "should not" or "cannot." Semantics? Yes. But very important language.

As for my experience with IR, we offer it as a separate service and not part of the typical home inspection.

How we deal with the mold issue, is by outlining to the client that IR is a tool for moisture intrusion, building envelope issues, energy efficiency, etc. It cannot see or detect mold, it is simply a study in Delta T and to assist in finding conducive conditions (moisture). We may recommend air sampling in an investigation, as well.

Regards,

Todd
buildingspecs.com