Johns Manville Formaldehyde-free™ Unfaced thermal and acoustical insulation offers R-Values of up to R-49, and is offered in precut batts to fit standard wall cavities or rolls for custom installation in any size cavity. Unfaced insulation reduces sound transmission through walls, ceilings and floors, and can be used in a variety of wood frame, engineered wood and steel frame construction applications, including new construction and retrofit.
Thermally Efficient: Effective resistance to heat transfer, with R-values up to R-49.
Formaldehyde-free: Will not off-gas formaldehyde in the indoor environment.
Sound Control: Reduces sound transmission through exterior and interior walls, floor and ceiling assemblies.
Fire-Resistant: Flame Spread of 25 or less and Smoke Developed of 50 or less.
Resilient Inorganic Glass: No rotting, mildew or deterioration. Also noncorrosive to pipes, wiring and metal studs.
Superior Performance: Stable bonded glass fibers will not slump within the wall cavity, settle or break down during normal applications.
|ASTM Standards||ASTM C665||Type I|
|Flame Spread||ASTM E84||≤ 25|
|Smoke Development||ASTM E84||≤ 50|
|Water Vapor Sorption||ASTM C1104||5% or less by weight|
|Odor Emission||ASTM C1304||Pass|
|Fungi Resistance||ASTM C1388||Pass|
|Combustion Characteristics||ASTM E136||Pass|
Unfaced Fiberglass SDS
Unfaced Fiberglass SDS (ES)
Fiberglass Installation Instructions
Fiberglass Installation Instructions (ES)
High Performance Unvented Attic: Install for Performance
STC Rating Documents
Acoustical Assemblies STC Rating Reference Guide