Spray acoustical plaster by Pyrok Inc.
Pyrok Acoustement Plaster 20 and Acoustement Plaster 40 are both gypsum plaster formulations, ideal for applications to a wide variety of surfaces including gypsum drywall and painted substrates. Acoustement 20 has the capability to be extremely smooth and still retain its sound absorption. All Pyrok Acoustement products are 100 percent free of polystyrene, cellulose and asbestos. These plasters can be vacuum brushed and lightly broomed, and are readily patched and repaired.