Weatherize and retrofit existing buildings or new construction. Provides consistent thermal resistance against outdoor air and helps maintain indoor temperatures. Greater air resistance means better temperature control. Made with recycled glass, it's the smarter way to stand up to the cold. Application: open attics of both new and existing structures, closed cavity behind fabric or netting, and use where pneumatically installed insulation is most cost-effective. This premium product is BIBS (Blow-In-Blanket System) approved. UL Environment: GreenGuard Certified, GreenGuard Gold Certified, Validated to be Formaldehyde-Free, EUCEB Certified.