Ceiling anomalies

[David A. Andersen]

There is some drywall patch work done

Just as a sidenote, these repairs could have been performed using a different type/thickness of sheetrock and it would show up if the temperature differential or extremely small. We don't have this information.
Also increased thickness of sheetrock paste and paint will also show up.
It is most likely that the installation was disturbed as a result of the repairs being made.
In this photograph, we have a sheetrock repair, repaired texture ceiling and a different type of paint. The anomaly is very subtle and temperature differential very small, however it is visible.

P.S. The apparent temp differential of this spot is only .7degrees F.