Underside of roof valley with radiant barrier
http://www.houstonthermalinspections.com/sites/all/themes/HI_Theme10/ima...); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(9, 9, 10); font-family: Tahoma, Verdana, Arial, sans-serif; font-size: medium; background-position: 50% 0%; background-repeat: no-repeat repeat; ">
http://www.houstonthermalinspections.com/sites/all/themes/HI_Theme10/ima...); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(9, 9, 10); font-family: Tahoma, Verdana, Arial, sans-serif; background-position: 50% 0%; background-repeat: no-repeat repeat; ">Underside of roof valley with radiant barrier. This image shows thermal bridging, thermal reflection and thermal conduction (the bright spots are nails conducting heat from the roof surface) all in a single image.