An often misunderstood concept within car building is that of sound deadening. Many often ask me, “Why should I add sound deadening to my ride?” The answer is simple. If you want to enjoy the benefits that include eliminating road noise, keeping the engine heat away from the interior, and eliminating the rattling that loud bass can produce, then sound deadening is a must for your project. If this sounds like your build, then it may be time for you to invest in some Dynamat sound deadening material.

The Dynamat brand is owned by Dynamic Control, a privately held corporation located in Hamilton, Ohio, USA. Established in 1989, the company markets acoustic environmental solutions for a broad range of industries. The Dynamat brand maintains the dominant market share in Car Audio and Automotive Restoration acoustic solutions.

This is definitely a weekend tech and depending on the condition of your car, it can take you a full day to tear the car apart and put it back together. If you know that you are going to need some metal patch work for your car, you should factor that into the build as well. Since we were planning on adding a custom interior, we did not plan on putting back the old interior into the car, and decided to use the “between time” to our advantage. With that said, follow along as we quiet down this classic by using some Dynamat Xtreme.

1. The tools and product are ready to go.

2. In order to get the sound deadening started, we are going to need to remove the old interior.

3. The seats were unbolted and carried off, which will allow us access to the floorboards.

4. We cut out a section of the carpet so we could get an idea of how we were going to remove the carpet. After seeing that the old carpet would come out fairly easily, we opted to pull the carpet together.

5. The carpet was removed in sections as it had a lot of trash from decades of use. We will also have to remove the stock insulation. You can also appreciate how GM used to paint the car completely, giving the car’s floorboards a protective coating.

6. We removed the carpet and took out the insulation and as you can see, the floorboards look solid and don’t appear to need any patchwork.

7. With the carpet out and the floorboards exposed, we vacuumed the floors to remove the unwanted dirt and debris that might have been left behind.

8. We scrubbed the floors and wiped them down so as to pick up all the dirt, allowing a good bond between the Dynamat material and the floorboards.

9. We started off by measuring the material and mock fitting the panels.

10. After looking at the situation, Jason realized that we should start from the rear forward.

11. With the Dynamat roller, we rolled the material in place, making sure that it had a good bond.

12. Using metal snips, we cut out the sections around the seat bolts.

13. If you happen to forget about bolt holes, you will have to find them and mark them as we did.

14. We used a utility knife to cut around the nut.

15. The nuts for the seat bolts were exposed and ready to be cleaned.

16. The Dynamat went on in big sections, so it is easy to see your progress when installing it.

17. Another trick when installing the Xtreme Dynamat is to make cuts in tight bends. This allows the material to relieve stress so that it will adhere properly.

18. The floorboards were now draped in Dynamat and that will keep the noise to a minimum. When the car receives full carpet and insulation, it should be as quiet as a new car. Thanks for following along!