Dynamat 11905 Hoodliner Thermo/Acoustic Insulation

Dynamat 11905 Hoodliner Thermo and Acoustic Insulation One 813mm x 1372mm Sheet 19mm Acoustic Foam Aluminised Reflective Skin 97 Percent Heat Reflection Self-Adhesive

The Dynamat 11905 Hoodliner is one 813mm x 1372mm (32" x 54") sheet of 3/4" (19.05mm) acoustic sound-absorbing foam with a reinforced, reflective aluminised skin. 97% heat reflection, high-tack pressure sensitive adhesive, oil and water resistant. Total coverage 1.11sqm (12 sq ft). Suited to vehicle hoods, engine compartments, generator housings, and boat engine bays.

Product overview

The Hoodliner is a thermo-acoustic insulation product combining an acoustic foam layer with a reflective aluminised skin, designed for under-hood, engine bay, and generator applications where both heat and noise need to be managed. The aluminised skin reflects 97% of radiant heat and is cleanable, oil resistant, and water resistant, making it practical for engine compartment environments. The acoustic foam layer uses a combination of open and closed cells engineered to absorb sound waves and convert them to heat energy. Open cells accept incoming sound waves; closed cells prevent them from passing straight through. The cast sheet construction maintains consistent foam resistivity throughout the material for predictable, uniform acoustic absorption. For maximum acoustic control, Dynamat recommends installing Hoodliner on top of Dynamat Xtreme. High-tack pressure sensitive adhesive backing for peel-and-stick installation.

Features and benefits

97% heat reflection: Aluminised reflective skin for effective radiant heat management under hoods and in engine bays.

3/4" (19.05mm) acoustic foam: Combined open and closed cell structure for maximum sound wave absorption.

Cleanable, oil and water resistant aluminised skin: Practical for engine compartment and generator housing environments.

High-tack pressure sensitive adhesive: Firm peel-and-stick adhesion without additional fixings.

One 813mm x 1372mm sheet: 1.11sqm (12 sq ft) of coverage.

Suited to vehicle hoods, engine compartments, generator housings, boat engine bays, and RV generator boxes.

For best acoustic performance, install on top of Dynamat Xtreme.

What's in the box

• 1 x Hoodliner sheet (813mm x 1372mm / 32" x 54")
• Total coverage: 12 sq ft (1.11sqm)

Technical specs

Frequently asked questions

What is the Dynamat Hoodliner used for?

The Hoodliner is a thermo-acoustic insulation product for vehicle hoods, engine compartments, generator housings, and boat engine bays. It reflects radiant heat and absorbs engine and mechanical noise to reduce the heat and sound entering the cabin.

How does the Hoodliner's acoustic foam work?

The foam uses a combination of open and closed cells. Open cells accept incoming sound waves; closed cells prevent them from passing straight through. This combination converts sound waves into heat energy rather than reflecting or transmitting them, providing effective acoustic absorption across the material.

Can the Hoodliner be used in combination with Dynamat Xtreme?

Yes. Dynamat recommends installing the Hoodliner on top of Dynamat Xtreme for maximum acoustic control. Dynamat Xtreme damps panel vibration while the Hoodliner adds acoustic absorption and heat reflection above it.

Is the aluminised skin resistant to oil and water?

Yes. The aluminised skin is oil and water resistant and can be cleaned, making it suited for engine compartment and generator housing applications where exposure to fluids and grease is expected.

What areas can the Hoodliner be installed in?

Common applications include vehicle and truck hoods, engine compartments, diesel truck firewalls, boat engine bays, and RV and generator housings anywhere that benefits from heat-reflective acoustic foam insulation.