PEBS Blanket

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Ideal for new construction, retrofit applications and metal buildings, Johns Manville PEBS unfaced filler blanket is a resilient, unfaced fiberglass insulation that provides economical thermal performance.

Johns Manville PEBS Unfaced Filler Blanket Formaldehyde-Free™ insulation offers an R-Value of up to R-49, with sound control and fire resistance for roofs and walls. PEBS is an economical, general-purpose fiberglass designed as filler material for use in both new construction and retrofits of pre-engineered metal buildings. It’s easy to cut with a utility knife and the blanket can be friction-fit easily in standard pre-engineered metal framing.


Formaldehyde-free: Will not off-gas formaldehyde in the indoor environment.
Thermally Efficient: Provides effective resistance to heat transfer with R-values up to R-49.
Sound Control: Reduces transmission of sound through exterior and interior walls and floor or ceiling assemblies.
Fire Resistant: Flame Spread of 25 or less and Smoke Developed of 50 or less.
Durable Inorganic Glass: Will not rot, mildew or deteriorate and is noncorrosive to pipes, wiring and metal studs.
Superior Performance: Bonded glass fibers are dimensionally stable and will not slump within the wall cavity, settle or break down during normal applications.

  ASTM Standards   ASTM C991   Pass
  Flame Spread   ASTM E84   ≤ 25
  Smoke Developed   ASTM E84   ≤ 50

Data Sheet

PEBS Unfaced Filler Blanket Data Sheet


PEBS Unfaced Filler Blanket SDS
PEBS Unfaced Filler Blanket SDS (ES)

Sell Sheet

Metal Building Insulation Sell Sheet

Available Documents