Some FAQs I got off the Dynamat Website FAQs for the benefit of the readers:
What Is Dynamat
Dynamat is a thin, flexible, easy to cut and mold sheet that actually stops noise causing resonance and vibration, by using visco-elastic qualities that promote vibro-acoustic energy conversion. In short, that means noise becomes silent energy.
How much Dynamat do I need to use to be effective?
You can apply Dynamat in patches (25-50% area coverage) to keep a specific panel from resonating or you can apply it over an entire area (such as the floor, doors, or trunk) to create a sound barrier and vibrational damper.
How does Dynamat stop road noise?
As a car operates, it generates noise. This noise is caused by the transference of energy (vibration) from the internal components and from the road to the chassis of the vehicle. The chassis (doors, floors, roof etc.) transforms this vibration into audible noise. Dynamat transforms the energy (vibration) into silent energy.
What part of the vehicle should I do first?
A: We recommend applying Dynamat to any surface you can easily reach. In general, we recommend treating your vehicle in the following order: Doors, Trunk, Rear Deck, Floors, Roof, Hood, then Fenders.
How Much bass increase can I expect to get with a Dynamat Trunk Kit?
While results vary from vehicle to vehicle and depend greatly on the installation, typical results have yielded a 3dB increase in Sound Pressure Level (SPL) bass output from a normal installation.