Johns Manville Formaldehyde-free insulation is made with proven fiberglass technology and consists of recycled and renewable content including a new organic plant-based binder that has no formaldehyde, acrylics, or dyes added. It offers the greatest thermal performance. It is for use in new or existing attic floor/ceiling applications. Kraft-facing serves as a vapor barrier to help manage moisture. Convenient pre-cut batts mean less cutting. It also Includes tabs for easy stapling to wood framing and good sound absorption. Inorganic glass fiber will not rot, mildew or deteriorate. GREENGUARD certified for superior indoor air quality.