|I am conducting a roof smoke release hatch survey for detecting heat lost pass missing seals. I gleamed opposite results than I expected. The hatches with missing are six degrees warmer than the hatches with proper seals. I theorize that they are warmer from heat rushing to fill the void that is left from escaping heat. I believe this will be proven during an exterior survey of these hatches an their thermal signatures will demonstrate warmer patterns. Any thoughts on this and has anyone ever surveyed like components or have any help on this.