Roy O Martin.

Eclipse radiant barrier OSB or plywood sheathing has an aluminum foil backing that the company says will block up to 97% of the sun’s radiant heat when used in a roof deck, significantly reducing attic temperatures. When used as a wall sheathing (OSB only) with approved foil tape to seal seams and corners, the product is redefined as Eclipse Energy Guard and serves as an energy-efficient housewrap. FSC-certified sheathing also is available by special order. 800.299.5174. www.royomartin.com.