KOIKEY Sound Deadening Mat 10mm (394 Mil) 13.1 sqft | Reduces Road Noise & Vibration

• Choose the Coverage That Fits Your Project:Includes 12pcs/13.1 sqft total coverage area (each 9.8" × 15.7", 394mil / 10mm thickness)—easy to plan coverage and start small upgrades. Need a different thickness or coverage area? Choose from 4mm / 5mm / 10mm thickness, with coverage options of 1 roll/19 sq ft, 2 roll/38 sq ft, 12pcs/13.1 sq ft, 15pcs/16.3 sq ft, or 34pcs/37.1 sqft—pick the right sound deadening mat for your build.
• Quieter Drive, Less Rattle & Vibration:Dense closed-cell foam supports sound deadening by reducing road noise, panel vibration, and interior rattles for a more comfortable ride. Noise levels can drop from ~52 dB to ~29 dB (about 50% lower). It also helps with sound dampening by absorbing both high- and low-frequency noise to keep your cabin quieter.
• Heat-Reflective Foil Helps Reduce Heat Soak:Foil facing helps reflect radiant heat from the engine/exhaust and summer sun, supporting car insulation and improving comfort. The aluminum layer can reflect up to 95% radiant heat (lab), helping reduce heat transfer when applied to areas like hood/firewall/roof.
• 4-Layer Build for Reliable, All-Weather Use:A foil + foam + PSA adhesive + release liner construction built for real car use. The waterproof foil surface wipes clean easily and resists everyday wear. Working temperature range: -40°F to 300°F. A dependable sound deadening material for cars built for both hot and cold conditions
• Peel & Stick Install — Easy to Cut & Apply:Strong PSA self-adhesive backing helps it stay put once pressed firmly in place. Easy to measure, trim, and fit around curves and corners with scissors or a utility knife. Apply this sound deadener to doors, floor, trunk, wheel wells, roof, hood, firewall, cargo area and more. The waterproof adhesive helps provide a lasting hold.

• Plan Your Coverage — Measure the areas you wish to treat (doors, floor, trunk, roof, hood). Use the 13.1 sqft (12 pcs, 9.8"x15.7" each) coverage to plan your layout, ensuring you have enough material for optimal sound dampening and heat reflection.
• Cut and Shape — Easily cut the mat to your desired shapes using scissors or a utility knife. Trim around curves, corners, and obstacles to ensure a snug fit for maximum effectiveness and a clean installation.
• Apply with Pressure — Peel off the release liner to expose the strong PSA self-adhesive backing. Firmly press the mat onto the prepared surface, ensuring good adhesion. Smooth out any air bubbles to guarantee a lasting hold.

Typical situations where KOIKEY Sound Deadening Mat 10mm (394 Mil) 13.1 sqft | Reduces Road Noise & Vibration helps — illustrative scenarios, not customer reviews.