1. As noise is caused by vibration, the first step in sound deadening is vibration control. The materials shall reinforce panels to prevent flexing when subjected to sound pressure. Add mass to panels to move resonance out of the audible range.

2. Act as a barrier to the transmission of sound, reducing unwanted ambient noise into your car and keeping the acoustical energy in the car rather than letting it escape through the vibrating panels.

3. The durability in the hot and humid environment.