[rbritton]

I bought one for that purpose. What it does best is show you relative temperature levels, which you can then investigate further to see if they're real or not. In my experience, some are actual air leaks, some lack of air circulation, and some lack of backing insulation.

[tonyarkles]

Yup, definitely agree. I've got one of the Seek Thermal units, and while the absolute temperature measurements aren't always that accurate, the relative temperature measurements are fantastic for finding hot/cold spots.