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Firewall Sound Deadener 177 x39‘‘Car Roof Heat Shield Insulation Deadening Mat

Firewall Sound Deadener 177 x39'' Car Roof Heat Shield Insulation Deadening Mat is a self-adhesive, heat-resistant damping mat priced at $47.22. Blocks 97% of radiant heat, reduces noise and vibrations. Ideal for firewalls, hoods, and car roofs during soundproofing or thermal upgrades.

$47.22

● In stock

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Price and availability may change. Click to see current details on Lab Work Auto.

Key features

  • Blocks 97% of radiant heat transfer
  • Reduces noise and panel vibrations
  • Self-adhesive with heat-activated application
  • Mold and mildew resistant vapor barrier
  • Flexible, crush-resistant construction
  • Non-toxic and fragrance-free material
  • Suitable for under-floor load zones

Pros

  • +Excellent heat reflection for engine bay use
  • +Improves cabin quietness noticeably
  • +Stays effective in extreme temperatures
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Cons

  • Adhesive may need heat activation
  • Odor from glue during initial install

About Firewall Sound Deadener 177 x39‘‘Car Roof Heat Shield Insulation Deadening Mat

What is Firewall Sound Deadener 177 x39‘‘Car Roof Heat Shield Insulation Deadening Mat?

The Firewall Sound Deadener 177 x39'' Car Roof Heat Shield Insulation Deadening Mat is a high-performance automotive insulation solution designed to reduce heat transfer, dampen noise, and minimize vibrations in vehicles. Measuring 177 inches by 39 inches, this flexible mat is engineered for installation on critical areas like the firewall, hood, roof, and floor panels. Made with durable, non-toxic materials, it features a self-adhesive backing for secure bonding to metal surfaces, creating a vapor barrier that resists mold and mildew. It's a go-to upgrade for car enthusiasts focused on cabin comfort and engine bay thermal management.

Key features

  • 97% Radiant Heat Block — Reflects and blocks up to 97% of radiant heat transfer from engine and sun exposure.
  • Noise and Vibration Reduction — Dampens road, engine, and wind noise while minimizing panel vibrations.
  • Flexible and Crush-Resistant — Conforms to curved surfaces without cracking or losing structural integrity.
  • Vapor Barrier Protection — Prevents moisture buildup, inhibiting mold and corrosion in enclosed areas.
  • Self-Adhesive Installation — Bonds securely to clean metal; heat with a hair dryer for better fit on complex shapes.
  • All-Season Performance — Helps keep interiors cooler in summer and warmer in winter.
  • Load-Resistant Design — Suitable for under-floor and high-pressure zones like wheel arches and load floors.

Who is Firewall Sound Deadener 177 x39‘‘Car Roof Heat Shield Insulation Deadening Mat for?

This product is ideal for DIY car modifiers, audio enthusiasts, and drivers in extreme climates seeking improved cabin comfort. It’s especially valuable for those installing aftermarket sound systems, performing engine bay detailing, or upgrading older vehicles with thin factory insulation. Intermediate-level installers will appreciate the balance of flexibility and performance, though beginners can manage with proper prep and heating tools.

How does Firewall Sound Deadener 177 x39‘‘Car Roof Heat Shield Insulation Deadening Mat compare?

Compared to standard polypropylene or foam-based deadeners, this mat offers superior thermal reflectivity and acoustic damping in a single layer. It outperforms basic bitumen pads in heat resistance and doesn’t degrade under high engine temperatures. Unlike multi-component systems, it integrates vapor barrier, insulation, and adhesion in one efficient sheet. While pricier than entry-level options, its coverage and dual-purpose design deliver better value than buying separate heat and sound shields.

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Best use cases

  • Firewall insulation behind dashboard
  • Hood liner to reduce engine noise
  • Car roof heat shield under headliner
  • Floor and wheel arch sound damping
  • Under-seat thermal and noise barrier
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Is Firewall Sound Deadener 177 x39‘‘Car Roof Heat Shield Insulation Deadening Mat right for you?

Buy this mat if you're upgrading factory insulation for noise reduction or heat protection. Best for DIYers with basic tools and moderate experience. Ideal for older cars or performance builds. Consider aluminum composite alternatives if seeking higher durability, or foam pads for budget jobs.

How it compares: Outperforms basic foam and bitumen deadeners in heat blocking and longevity. More effective than single-purpose mats by combining sound damping and thermal shielding in one layer.

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Frequently Asked Questions

What does the Firewall Sound Deadener do?

It reduces heat transfer from the engine and sun while dampening road and engine noise. Installed on firewalls, roofs, or floors, it improves cabin comfort and protects interior components from thermal stress and vibration damage.

Does the adhesive work in cold weather?

The adhesive performs best above 5°C. In colder temps, warm the mat with a heat lamp or hair dryer before peeling off the liner to ensure proper bonding and avoid delamination.

How do I install the sound deadener mat?

Clean the surface thoroughly, heat the mat for flexibility if needed, remove the backing, and press firmly into place. Use a roller or hand pressure to ensure full contact and adhesion.

Is this mat safe for enclosed spaces?

Yes, the material is non-toxic and fragrance-free. The adhesive may have a mild odor during installation but dissipates quickly and poses no long-term health risk in ventilated areas.

Can I use this on car doors?

Yes, but full noise reduction requires comprehensive treatment of multiple panels. Door use helps, but maximum effect comes from combined firewall, floor, and roof installation.

How much does Firewall Sound Deadener 177 x39‘‘Car Roof Heat Shield Insulation Deadening Mat cost?

Firewall Sound Deadener 177 x39‘‘Car Roof Heat Shield Insulation Deadening Mat is $47.22 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.

Is Firewall Sound Deadener 177 x39‘‘Car Roof Heat Shield Insulation Deadening Mat in stock at Lab Work Auto?

Yes, Firewall Sound Deadener 177 x39‘‘Car Roof Heat Shield Insulation Deadening Mat is currently in stock at Lab Work Auto.

Specifications

SKU
F8-017302
Last updated May 14, 2026