Hi Folks;
I've had some luck using my Fluke FlexCam TIR2-FT20 to find problems. Here's a shot of SolaTiles, an early roof-tile product installed in a daisy chain with about 25 tiles to a string.
Lorna Fear
(650) 520 4869
San Francisco Bay Area
Visual Cue Thermal Imaging
http://www.infraredmagic.com