Sky High Car Audio 120Mil Sound Deadener ( Single Sheet )

Lock in your sound and cut down on heat with this 120 mil (0.120” / 3 mm) aluminum-backed sound deadening mat. Designed for doors, floors, roof, trunk, and firewall areas, it uses a super sticky butyl rubber adhesive paired with a thick aluminum top layer to tame panel resonance, road noise, and radiant heat all at once.

Key Features

• Heavy-Duty Thickness
  
• 120 mil nominal thickness (0.120” / 3 mm total) for serious noise and vibration control.
• Aluminum Top Layer
  
• 6 mil aluminum layer helps reduce both sound transfer and heat soak inside the vehicle.
• Super Sticky Butyl Adhesive
  
• High-tack butyl rubber backing bonds strongly to properly prepped metal surfaces—no slipping or peeling when installed correctly.
• Premium Finish
  
• Thick black foil face with metallic blue/purple logos for a clean, professional look in exposed areas.
• Convenient Sheet Size
  
• Each sheet measures 23.5” x 11”, making it easy to fit into door skins, trunk floors, and tight spaces with minimal waste.
• High Density
  
• Just under 1 pound per square foot for effective vibration damping without excessive added weight.
• Flexible Pack Options
  
• Sold in variety packs from 16.5 square feet up to a 99 square foot mega bulk pack—perfect for anything from a single cab to a full demo build.

Installation Tips

For best results, always thoroughly clean the surface, removing dust, oil, and loose material. Heat both the metal and the sound deadening mat before installation to improve flexibility and ensure maximum adhesion. Apply firm pressure across the entire sheet to eliminate air pockets and secure a long-lasting bond.