In 1988, the foil-constrained layer-damping technology was introduced and approved to the industry by GM and began in vehicle production the next year. Today, HushMat Ultra is the only OEM Spec-approved damping material available to the automotive do-it-yourself market.
HushMat Ultra is one of the easiest to install vibration damping and thermal insulation materials available. The unique properties allow for installation using only two basic tools: hands and scissors. The material is formulated to perform and maintain its flexibility at a wide temperature range of -30 degrees to 400 degrees Fahrenheit.
HushMat has mastered the complex technology in the automotive acoustics, sealing, and thermal insulation categories with advanced product technology that requires:
* No surface preparation
* No acetone or alcohol wash
* No heat guns or glue
* Easily conforms to contoured surfaces
* Reduces install time by more than half
HushMat Ultra materials are universally applied to any vehicle on the road today and will treat the firewall, floor, tunnel, doors, trunk, trunk lid, quarter panels, roof, and hood. Simply peel and stick. So, whether you're going to body-drop your mini and want to sound proof the cab, or you just want some better performance out of your stereo, this is the stuff to use. Special thanks to Santa Fe Auto Sound in Overland Park, Kansas, for the use of their facility. For more information, visit www.hushmat.com.
First, remove the brown release paper from the HushMat Ultra Black Foil. Pass the sheet through the largest access hole in the frame and apply it to the inside of the outer doorskin.
Position the sheet against the outer doorskin by using the smaller access holes through the doorframe. Be sure to cover a minimum of 70 percent of the doorskin, starting in the center and working toward the outer edges of the door. This treatment will reduce the vibration of the thin outer-door metal. | 
Starting on one edge of the doorframe, peel back the brown release paper. Apply the material from the top of the frame to the bottom, while making sure to cover all of the access holes through the door. The HushMat Ultra also serves as the vapor barrier that you removed. |
Next, carefully cut access slits through the HushMat where the wiring or door hardware must pass through. Then, pull the wiring or hardware through the slits. | 
Reinstall the door speaker and all of the hardware to the door. |
Lay the door panel on a table or flat surface with the back of the panel facing up. Lay one sheet of HushMat Silencer foam against the door panel, while leaving the white release paper intact. Place the edge of the foam just inside of the fasteners or clips that secure the panel to the door. | 
Next, cut away any excess foam hanging over the edge of the door panel. By using your hands, press the foam to the panel surface. |
Starting on one edge of the doorframe, peel back the brown release paper. Apply the material from the top of the frame to the bottom, while making sure to cover all of the access holes through the door. The HushMat Ultra also serves as the vapor barrier that you removed. | 
Cut around all of the panel-fastening points: the speaker grille, the wire harness, and anywhere the hardware will be attached. Next, slit the Megabond foam and pull the devices through. |
Finally, secure all of the hardware and electrical connections from the door panel to the door and place the panel back onto the vehicle. Test each device to ensure its functionability before securing the panel. Once you secure the door panel to the door, the door installation is complete. Repeat these steps for each door in your vehicle and wherever sound dampening is necessary. | |