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Sound proof your car, in the doors behind the speakers, in the speaker box, up the firewall through to the trunk and the roof. Layer the Roadkill sound deadening pads on the wheelwells, transmission area and firewall. Cover the factory fitted sound deadening material, the more you use the more effect it has.
If you have door mounted speakers, padding the door is vital. Cut a sound deadening pad up to stick the pieces on the inside of the outside skin of the door and directly behind the speakers. You can also put some on the metal that is covered by the door panel or on the inside of the door panel itself providing it is made of plastic. Roadkill don't stick to rough wood and cloth so good.Line the inside of your speaker box.
When you are done with the doors they will close with a solid healthy "thump" like one of the more expensive cars that come with the stuff already fitted!
Covering the floor will cut out road and engine noise and if you have a noisy exhaust, that will become less noticeable as well. Start by removing the seats and then the carpets all the way to the trunk. You will notice that sound deadening pads have already been factory fitted.
Vacuum up dust and begin laying down the Roadkill as high up the firewall as possible. If factory fitted sound deadening material is already fitted, layer it with Roadkill using the hot air gun to get it to go down well. Don't be afraid to layer the Roadkill pads (2 or 3 layers will absorb a lot more noise) on the firwall, transmission area and the wheel wells. Roadkill costs next to nothing so use it liberally, the more you use the more effect it has.
The roof of a car can be compared to a giant size cymbal in a drum set. It's huge surface area is prone to vibration from the sound system and the road surface. Applying Roadkill to the roof of a car is not the easiest of tasks. But if you're up to a good workout on your shoulders, the result is impressive. If you're not sure how to take out the roof lining - check up in a Haynes manual, the last thing you want to do is damage it.
Reducing road and engine noise can help to reduce driving fatigue. | 
