I doubly recomend this. I actually borrowed a FLIR camera from work but I was amazed at how much insight it gave me. Specially in older houses you can easily s

I doubly recomend this. I actually borrowed a FLIR camera from work but I was amazed at how much insight it gave me. Specially in older houses you can easily spot areas where insulation has degraded or even actual air gaps from previous bad jobs. As bonus you will also discover that the IR emitted by you bounces off transparent glass as if it was a mirror! Scared the crap out of me when looking into the display, for a split second I genuinely thought there was someone behind the glass!