Design Engineering Boom Mat Under-Hood Thermal Acoustic Liner 32x54 3/4" Aluminum-Faced Sound Deadener

Design Engineering Boom Mat Under-Hood Thermal Acoustic Lining is a 3/4" thick peel-and-stick aluminum-faced insulation designed to cut engine bay heat and reduce noise while protecting hood paint.

Built for modern and modified vehicles, this universal-fit lining combines industrial-grade acoustic foam with a reflective aluminum surface to deliver thermal control and sound dampening beneath the hood. The pre-cut 32" x 54" panel is easy to install: simply clean the mounting surface, peel the adhesive backing, and press the mat into place. Because it resists extreme engine temperatures and reduces vibration, it’s also a practical option for generator enclosures, HVAC housings, and other industrial applications where heat and noise management matter.

How does this liner lower engine bay temperatures?

The aluminum-facing reflects radiant heat while the dense acoustic foam slows conductive heat transfer, reducing the amount of heat that reaches the painted hood. Together the two layers form a thermal barrier that helps keep hood surfaces cooler and protect paint and clearcoat from heat-related damage.

• Reflective aluminum face bounces radiant heat away from the hood surface
• 3/4" industrial acoustical foam reduces conduction through the hood
• Continuous panel coverage minimizes hot spots
• Durable materials tolerate typical under-hood temperatures

Will this product meaningfully reduce engine noise and vibration?

Yes — the thick acoustic foam core absorbs and dampens airborne noise and reduces vibration transfer to the hood, producing a quieter cabin and less radiated engine noise. It won't alter engine sound at source, but it significantly reduces what reaches the surrounding panels and the exterior.

• 3/4" acoustical-grade foam for sound absorption
• Reinforced construction helps damp hood vibration
• Full-panel coverage reduces resonance and rattles
• Peel-and-stick adhesion prevents gaps that degrade noise control

How easy is installation and what surfaces work best?

Installation is straightforward and requires no special tools: clean the underside of the hood or enclosure, trim if necessary, peel the backing, and press the mat into place. The aggressive adhesive works on painted metal, sheet metal, and many rigid surfaces; for high-temperature or heavily textured areas additional mechanical fasteners may be used.

• Simple peel-and-stick application — no sprays or adhesives required
• Trim-to-fit with utility knife or scissors for custom placement
• Cleans surfaces ensure best adhesive bond
• Optional mechanical fasteners for extra security in high-vibration zones

Can this lining be used beyond cars?

Absolutely — the combination of thermal reflection and acoustic damping makes it useful for generator boxes, HVAC housings, tool cabinets, and other industrial enclosures where heat control and noise reduction are needed. Its universal fit and durable face make it adaptable to many applications.

• Generators: reduces radiant heat and muffles operating noise
• HVAC: helps control equipment noise and thermal loss
• Industrial enclosures: protects internal components from heat exposure
• Custom projects: easy to cut and shape for varied uses

Who is this for? The Design Engineering Boom Mat Under-Hood Thermal Acoustic Lining is ideal for DIY mechanics, car enthusiasts with modified or high-output engines, professional installers, and facilities managers who need a straightforward thermal and acoustic solution. If you want a durable, easy-to-fit product that lowers hood temperatures, shields paint from heat, and dampens noise in vehicles or equipment enclosures, this universal 32" x 54" x 3/4" panel is a practical choice.