Mineral Wool 4″: Sound And Fire Block

  • Excellent Acoustical Performance
  • Fire Safety
  • Noncombustible
  • Durable & Inorganic

Technical Data Sheet

Safety Data Sheet

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Mineral Wool 4″: Sound And Fire Block

Mineral Wool batts are made of inorganic fibers derived from basalt, a volcanic rock. Advanced manufacturing technology ensures consistent product quality, with high-fiber density and low shot content for excellent performance. JM Mineral Wool batts are inorganic, noncombustible, moisture resistant, non-deteriorating, and will not mildew or support corrosion. Questions? Contact Us.

JM Sound & Fire Block batts are designed to deliver noise control in wood-stud cavities of interior walls and ceilings between floors.

In standard wood framing, carefully insert batts between the wood studs or joists to fill the cavities with a friction-fit to framing members. JM mineral wool batts are easily cut with a knife for quick installation and snug fit in nonstandard size cavities.                                    Suspended Ceilings: When approved by the ceiling system manufacturer, lay JM mineral wool batts over the ceiling area so that the insulating material is supported by the ceiling suspension system, not the ceiling panels themselves.

JM mineral wool products are compression packed for more efficient storage and transport.

Excellent Acoustical Performance: Lightweight, flexible insulation batts are excellent sound absorbers, efficiently reducing sound transmission. JM wool batts improve the Sound Transmission Class (STC) ratings of interior partition walls and suspended ceilings. The high-density, non-combustible fiber in mineral wool reduces unwanted noise from traveling from room to room, making
homes quieter.

Fire Safety: Mineral wool Sound & Fire Block has a melting point in excess of 2000°F (1093°C). See Applicable Standards for details.

Noncombustible: See Applicable Standards for details.

Durable & Inorganic: JM wool batts do not support growth of fungi, nor do they sustain vermin.

Johns Manville, a Berkshire Hathaway company, was founded in 1858. Our ownership by Berkshire Hathaway, one of the most admired companies in the world and one of the most financially secure, allows JM to invest for the future. This enables JM to continue delivering the broadest range of insulation products in the industry and offering innovative solutions that meet your needs.

Johns Manville

Weight 60 lbs
Dimensions 124.46 × 60.96 × 35.56 in