Sound and Heat Shield Install

Next goes on a layer of Quality Heat Shield, dense padding bonded to a reinforced layer of aluminum foil. It's important that the foil be placed on top (instead of against the body panels) for several reasons. It not only serves as a skin to protect the padding, but also creates an air pocket, similar to a double-pane thermal window. It's that layer of air that provides the insulation (sound travels more easily through solids).

Results
As just one example, Cox recalls a hot-rodded '64 Chevelle he insulated. Prior to adding the materials, at 60 mph the sound level was 100 db (equivalent to that of an unbridled jackhammer, he says), but afterward it dropped to 80 db. Ditto for the levels at idle (80 and 60 db, before and after). That's a huge difference, especially when you consider that decibels are measured on a logarithmic scale, so this decrease represents approximately 50 percent reduction in sound!


As for reducing temperature, the foil also helps to reflect back heat emanating from the engine and exhaust system. This material acts a fire retardant, and reflects back 97 percent of infrared energy, Quiet Ride claims, resulting in a temperature drop of as much as 30 degrees. As already noted, this reduction can benefit both the passengers and the engine.


It's fairly easy to put in the materials, and Quiet Ride offers a wide range of pre-cut kits for cars, trucks, RVs and other projects. A universal package that you can custom fit is available as well. It's important to make sure the materials form a consistent barrier or envelope that's sealed with foil tape at the seams, and is glued down securely. That ensures the insulation will be the most effective at blocking out both heat and noise, keeping your ride both cool and quiet.

Resource
Quiet Ride Solutions, 6507 Pacific Avenue, Ste. 334, Stockton, CA 95207, (209) 942-4777, www.quietride.com