cloth Bivouac sack Cool Roof Emissivity Fire proximity suit Interior radiation control coating Low emissivity R-value Space blanket Thermal insulation Thin-film deposition References External links How a radiant barrier saves energy Radiant Barriers: A Question and Answer Primer Radiant Barrier Fact Sheet Department of Energy This entry incorporates public domain text originally from the Oak Ridge National Laboratory and the U.S. Department of Energy. Roofs Heat transfer Materials Technical fabrics Building insulation materials