Sound & Fire Block

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Made from high-density, noncombustible material, Johns Manville Sound & Fire Block® mineral wool helps delay the spread of fire between interior floors and rooms.

Johns Manville Sound & Fire Block® mineral wool batts are noncombustible and moisture-resistant. The high-density fibers in mineral wool help delay the spread of fire and reduce noise transfer in interior walls and between ceilings and floors.

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Sound Control: Absorbs sound and improves wall assembly STC ratings by up to 10 dB.
Fire-Resistant: Melting point in excess of 2000˚F (1093˚C). Flame Spread of 0 and Smoke Developed of 0.
Durable Inorganic Glass: No growth of fungi. No sustaining of vermin.

  ASTM Standards   ASTM C665   Type I
  Flame Spread    ASTM E84   0
  Smoke Development   ASTM E84   0
  Critical Radiant Flux   ASTM E970   > 0.12 W/cm2 (0.11 Btu/ft2s)
  Water Vapor Sorption   ASTM C1104   5% or less by weight
  Odor Emission   ASTM C1304   Pass
  Corrosiveness    ASTM C665   Pass
  Fungi Resistance   ASTM C1338   Pass
  Combustion Characteristics   ASTM E136   Pass

Data Sheet

Sound & Fire Block Data Sheet


TempControl SDS
TempControl SDS (ES)


Limited Warranty

Mineral Wool Limited Warranty


Product Selector Guide
Mineral Wool Product Comparison Chart
Mineral Wool 2.0 Sell Sheet

Specifications and Certificates

Mineral Wool Environmental Product Declaration

JM Mineral Wool

JM Mineral Wool Product Properties

JM Mineral Wool Product Properties
(short version)

JM Overview Video

Available Documents