Johns Manville Formaldehyde-free unfaced thermal and acoustical insulation offers R-Values up to R-49. It reduces sound transmission through walls, ceilings and floors, and can be added to existing insulation.  JM insulation is compression-packaged for space savings, and is offered in precut batts to fit standard wall cavities for both vertical and horizontal applications.
- Fiberglass batt insulation for use in 2x4 wood-framed walls and basements 
- Unfaced fiberglass batts do not have a vapor barrier and can be added to existing insulation 
- Improves energy efficiency and provides sound control 
- Batts are pre-cut for use in standard 8-ft walls with 16-in on-center stud spacing 
- Simple to install, press in place between studs 
- Will not rot, mildew or deteriorate and is noncorrosive to pipes, wiring and metal studs 
- JM is a partner of the Seal and Insulate with ENERGY STAR program 
- SCS Recycled Content certification 
- GREENGUARD Gold Certified for office indoor air quality and SCS Certified for home indoor air quality