KOIKEY Car Sound Deadening Mat 10mm (394mil) 16.3 sqft | Reduces Road Noise & Vibration

• Choose the Coverage That Fits Your Project:Includes 15pcs/16.3 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.

• Prepare the Surface — Clean the target area (doors, floor, trunk, roof, hood) thoroughly with an automotive cleaner. Ensure the surface is dry, dust-free, and free from grease or oil for optimal adhesive performance.
• Measure and Cut — Measure the area you wish to cover. Use scissors or a utility knife to easily cut the KOIKEY sound deadening mat to the desired shape and size, fitting around curves and corners as needed.
• Apply the Mat — Peel off the release liner from the adhesive backing. Carefully position the mat and press it firmly onto the prepared surface, ensuring good contact and adhesion. Use a roller for best results.
• Seal Edges — Ensure all edges are pressed down securely. For added durability and a cleaner finish, consider sealing the edges with a compatible automotive sealant if required for your specific application.

Typical situations where KOIKEY Car Sound Deadening Mat 10mm (394mil) 16.3 sqft | Reduces Road Noise & Vibration helps — illustrative scenarios, not customer reviews.