5mm XPE Car Sound Deadener Foam Mat – Hood, Door & Roof

Upgrade your driving experience with this 5mm XPE Closed-Cell Polyethylene Foam Sound Deadener Mat. Engineered for automotive use, this insulation padding dramatically reduces unwanted cabin noise, regulates interior temperature, and adds a layer of protective cushioning to your vehicle's key surfaces — all in one easy-to-apply sheet.

Made in Mainland China.

Why You'll Love It

• Significant Noise Reduction: Dampens engine rumble, tire whine, road noise, and wind noise for a quieter, more refined ride.
• Thermal Insulation: Keeps your cabin cooler in summer and warmer in winter, helping reduce air conditioning load and fuel consumption.
• Strong Self-Adhesive Backing: Applies cleanly at room temperature (above 0°C/32°F) — no heat gun needed. Once bonded, it stays put for the long haul.
• Easy to Work With: Flexible foam cuts easily with scissors or a utility knife, peels cleanly, and conforms to curved surfaces.
• Waterproof & Flame Retardant: Moisture-resistant construction with flame-retardant properties for peace of mind in automotive environments.
• Protects Your Vehicle: Shields under-hood wiring and pipelines from heat, slows paint aging caused by engine and solar heat exposure.
• Anti-Vibration: Works best when paired with vibration-dampening plates before laying the foam — a professional-grade approach to full cabin quieting.

Key Specifications

• Material: XPE (Cross-linked Polyethylene) Rubber Foam
• Thickness: 5mm
• Surface Layer: High-fiber fiberglass cloth
• Quantity: Available in 1, 2, 3, or 4 piece sets
• Adhesive: Self-adhesive peel-and-stick backing
• Temperature Resistance: Flame retardant
• Water Resistance: Yes — waterproof and moisture-proof

Where to Use It

This versatile insulation mat is suitable for a wide range of placements:

• Hood / Bonnet liner
• Car doors
• Roof / Headliner
• Cockpit floor
• Tailgate
• Firewall
• Front mudguard / wheel arches
• Indoor walls (home or workshop use)

Pro Tip

For best results, apply vibration-dampening plates to the door or panel surface before laying this foam mat. The combination of vibration control + foam insulation delivers a dramatically quieter and more comfortable cabin environment.

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Further Reading

Learn about vehicle safety standards and automotive materials from the U.S. Consumer Product Safety Commission (CPSC).

Learn more: Soundproofing

Frequently Asked Questions

Q: What surfaces can I apply the 5mm XPE car sound deadener mat to?

A: This XPE foam insulation mat is designed for use on car hoods, doors, roofs, floor pans, tailgates, firewalls, and wheel arch areas. It can also be used on indoor walls in workshops or home studios for additional sound insulation.

Q: Do I need any special tools or adhesives to install the XPE foam mat?

A: No special tools are required. The mat features a strong self-adhesive peel-and-stick backing that bonds firmly at room temperature (above 0°C / 32°F). Simply clean the surface, peel the backing, and press firmly. No heat gun or extra glue needed.

Q: Is this sound deadening foam waterproof and safe for under-hood use?

A: Yes. The XPE foam mat is both waterproof and moisture-resistant, making it suitable for under-hood and door cavity applications. It is also flame retardant, providing an added layer of safety in heat-prone automotive environments.

Q: How does this mat help with vehicle temperature regulation?

A: The closed-cell XPE foam acts as a thermal barrier, reducing heat transfer from the engine bay into the cabin in summer, and helping retain warmth in winter. This can reduce the load on your air conditioning system and contribute to better fuel efficiency over time.