Structurwood Radiant Barrier Sheathing has improved perforations in the foil, enhancing the drainage and venting process. It features specially designed adhesives, providing secure foil attachment and better durability and a foil barrier that provides energy savings of up to 25 percent by blocking up to 97 percent of the sun's heat, according to the manufacturer. 800-523-0824. www.structurwood.com.