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Noise S.T.O.P Acousti-Board™

Acousti-Board Sound Board

Sound Deadening Board made from Sound Blocking Material

  • Best Value!
  • Fiberglass Free
  • Easy to Install

Product Testing & Information

  • Product Specs
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Product Specs


Recycled Wood Fiber Residue

Panel Size





15-20 lbs pcf


0.715 lbs/sqft

Insulating Value

R = 1.32 at 1/2″ per ASTM C518

Acoustical Performance

NRC Rating per ASTM C423-0.35
STC Rating per ASTM E90-23


Class C per ASTM E84

Flame Spread Index

>75 Class III or C)


Acousti-Board can be used as a damping layer between studs and gypsum board to improve Sound Transmission Class (STC) of gypsum drywall partitions. Schools, Apartment Buildings, Townhouses, Condominiums. Noise S.T.O.P. Acousti-Board meets the Requirements of ASTM-C208, the Specification for Cellulosic Fiber Insulating Board.

CAUTION: Noise S.T.O.P. Acousti-Board™ is combustible and may smolder if ignited. Do not expose this sound deadening board to flame or prolonged excessive heat above 212°F without sufficient thermal protection or use between layers of noncombustible material. Acousti-Board™ is not a fire rated material.

Acousti Board STC 56