One thing to keep in mind is that the time of day we schedule for a home inspection may not be the ideal time or climatic condition to do thermal imaging of the building envelope. Thermal loads on the structure vary throughout the day making building envelope, air infiltration/ex filtration, and moisture intrusion issues either more difficult or easier to spot. There is some liability that will be inherent because of that. I also think that the scope and limitations of thermal imaging should be clearly defined in the home inspection contract. I have spoken with some inspectors that include thermal imaging as part of their inspection, but make no mention of it in their contract.