Helps block radiant heat in the roof panel from emitting into the home’s attic, reducing attic temperatures by up to 30º F. Patented VaporVents technology allows any trapped moisture to escape from the radiant barrier panels during and after installation. May help builders qualify for various energy codes, including Green Building credits, energy rebates and lower HERS scores.Installs like conventional roof sheathing, requiring no additional labor or installation time.