Many hot rodders recognize the benefits of lining the floorboards with Dynamat, but how about the roof? Cameron says doing so cuts down on wind and road noise dramatically. Many ’50s cars like Tri-Fives had a paper-based product on roof liner from the factory, and it must be scraped off before laying down Dynamat. Taking things one step further, a Dynaliner foam product measuring 1/2-inch thick can also be sprayed on top of the Dynamat in the headliner. The process is so effective that Cameron often performs it on late-models as well.