Unfaced Fiberglass

For effective management of heat flow and unwanted noise, Johns Manville Unfaced batts and rolls provide heat control from the exterior while effectively controlling noise in interior walls.

Data Sheet

SDS

Product Guide

JM Unfaced Formaldehyde-Free Fiberglass Insulation HPD

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.

Advantages

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
Corrosiveness	ASTM 665	Pass
Fungi Resistance	ASTM C1388	Pass
Combustion Characteristics	ASTM E136	Pass