BlueTex™ 2mm Pro is an EPE foam product combined with 97% reflective pure aluminum foil to REFLECT radiant heat and provide a nice bright glossy white interior finish in metal buildings, barns, sheds, garages, airplane hangars, agriculture facilities, etc. The foil surface, when installed with a ¼" or more air space, blocks radiant heat and the foam core helps to stop condensation when BlueTex™ is installed air tight.