Engine Bay Sound Deadening: DIY Guide to Reduce Engine Noise

Overview

Eastwood X-MAT® Low Profile Dense Mat uses a multi-layer format for heat, sound, and vibration control in vehicle interiors. Also, the five-sheet set covers 19.7 square feet with low-profile, dense material.

Realistic expectations center on the stated functions: absorbing road and drive-line noise, reducing floor pan vibration, and reducing engine and exhaust heat. In addition, the material supports acoustic and thermal protection in muscle cars, street rods, boats, and RVs.

Key takeaways

  • The set includes five sheets with 19.7 square feet of total coverage.
  • Each sheet measures 31.5 inches by 18 inches by 1/8 inch.
  • The layered construction uses butyl rubber, aluminum, and closed-cell foam.
  • The material withstands temperatures up to 350°F.
  • Heat reduction reaches up to 47°F, while sound reduction reaches up to 17.4 dB.
  • Placement areas include carpets, doors, speaker boxes, firewalls, floors, and side panels.

What the product is designed to do

This low-profile heat, sound, and vibration barrier is designed to address road noise, floor pan vibration, and exhaust heat. Also, the multi-layer build combines noise absorption, heat resistance, comfort, and insulation in one flexible sheet format.

The butyl rubber membrane absorbs road and drive-line noise. In addition, the aluminum facing and closed-cell foam reduce engine and exhaust heat.

The material supports use under carpets, inside doors, around speaker boxes, and on firewalls. For example, its flexible form conforms to complex interior contours on floors, door panels, and side panels.

Materials, dimensions, and technical details

The construction uses three named layers: butyl rubber, aluminum, and closed-cell foam. Also, each layer connects to a stated function involving noise absorption, heat resistance, comfort, or insulation.

Detail Specification
Package contents 5 sheets
Sheet dimensions 31.5 in. × 18 in. × 1/8 in.
Total coverage 19.7 sq. ft.
Material layers Butyl rubber, aluminum, and closed-cell foam
Temperature resistance Up to 350°F
Heat reduction Up to 47°F
Sound reduction Up to 17.4 dB

The five-sheet sound deadening mat set combines these specifications in a dense, low-profile format. Next, the 1/8-inch thickness supports placement in the named vehicle interior areas.

Installation and placement notes

The sheets are easily cut for placement under carpets, inside doors, around speaker boxes, and on firewalls. Also, the flexible material conforms to complex contours across floors, door panels, and side panels.

Gloves and eye protection support cutting and installation. In addition, the stated placement areas give practical reference points for planning coverage across a vehicle interior.

For broader context around vehicle noise-control placement, see these engine bay sound deadening tips. The related car headliner sound deadening guide covers another interior placement area.

The flexible vehicle sound barrier sheets support cutting around the named interior contours. However, the stated safety guidance calls for gloves and eye protection during cutting and installation.

Performance characteristics described

The butyl rubber membrane focuses on noise absorption and absorbs road and drive-line noise. Also, the aluminum facing provides heat resistance while closed-cell foam adds comfort and insulation.

The material withstands temperatures up to 350°F. In addition, the stated figures cover heat reduction up to 47°F and sound reduction up to 17.4 dB.

These figures connect directly to the product’s heat, sound, and vibration barrier role. As a result, the sheet format supports the named uses around carpets, doors, speaker boxes, firewalls, floors, and side panels.

A separate automotive sound deadening and thermal insulation comparison covers related material categories. The multi-layer automotive insulation mat uses its own butyl rubber, aluminum, and closed-cell foam construction.

Pros

  • The multi-layer build combines butyl rubber, aluminum, and closed-cell foam.
  • The set covers 19.7 square feet across five flexible sheets.
  • The material conforms to complex interior contours.
  • Placement areas cover several vehicle interior locations.
  • Temperature, heat reduction, and sound reduction figures are listed.

Cons

  • The set uses 1/8-inch-thick sheets, which keeps the format low profile.
  • Cutting and installation call for gloves and eye protection.
  • Total coverage remains 19.7 square feet across the five-sheet set.

FAQ

What does this sound deadening mat target?

It targets road noise, floor pan vibration, and exhaust heat. Also, the butyl rubber membrane absorbs road and drive-line noise.

Where can the sheets go inside a vehicle?

Placement areas include under carpets, inside doors, around speaker boxes, and on firewalls. In addition, the sheets conform to floors, door panels, and side panels.

What materials make up the layered construction?

The layers use butyl rubber, aluminum, and closed-cell foam. Also, those layers connect to noise absorption, heat resistance, comfort, and insulation.

How large is each sheet?

Each sheet measures 31.5 inches by 18 inches by 1/8 inch. The full set includes five sheets covering 19.7 square feet.

What heat and sound figures apply?

The material withstands temperatures up to 350°F. Also, heat reduction reaches up to 47°F, and sound reduction reaches up to 17.4 dB.

What safety steps apply during installation?

Wear gloves and eye protection when cutting and installing the material. In addition, the sheets are easily cut for the named placement areas.