We specialize in products that are sprayed onto ceilings and walls that either reduce reverberation noise or deal will sound transmissions. See below for the sound chart for STC assemblies using urethane foam. Various products we spray have tested assemblies. Ceiling systems are primarily used to absorb sound deflection. These systems can be plaster, cellulose, etc. These are made as finished ceilings and are to be left exposed. The same product can be used to enhance lighting control and create dimensional finishes.