
Experience a quieter, more refined ride with the HushMat Silencer Megabond 1/4" Door/Headliner Kit. Specifically engineered to target high-frequency airborne noise (above 600 Hz), this acoustic foam delivers powerful noise absorption where traditional damping materials fall short.
Use it to eliminate engine noise penetrating through the firewall, wind noise behind door and pillar trim, and road noise that enters through the trunk and cargo area. The thicker 1/4-inch closed-cell foam construction is ideal for absorbing airborne sound waves that create fatigue and cabin discomfort.
When installed in combination with HushMat Ultra, this product also adds outstanding thermal insulation, making your vehicle cooler, quieter, and more comfortable. Easy to apply with a pressure-sensitive adhesive backing, Silencer Megabond is perfect for headliners, doors, pillars, trunks, and firewalls.
Key Features:
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1/4" thick foam absorbs high-frequency noise (>600 Hz)
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Targets engine, wind, and road noise traditional damping can’t block
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Ideal for firewalls, trim panels, trunks, and headliners
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Works in tandem with HushMat Ultra for dual-layer performance
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Provides added thermal insulation and sound absorption
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Peel-and-stick PSA backing for easy DIY or professional installation
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Enjoy a quieter, solid-feel ride in any vehicle
This Kit includes two (2) 23" x 36" Silencer Sheets - 1/4" Thickness
Videos:
Product Demo
PDF:
HushMat SILENCER MEGABOND
FEATURES & BENEFITS:
- Excellent Sound Absorption properties (600 – 4000 Hz)
- Outstanding Adhesive provides effective performance to virtually any substrate.
- Performance over broad temperature range (-40 F up to 300 F)
- Excellent weatherability, including UV resistance
- Conforms to complex shapes
- Reduces Firewall and Tunnel Heat
- Simple to apply – Simply peel and stick!
- No application equipment investment required – no messy spray equipment
- Unaffected by moisture and chemicals – including alkalis and acids
- Easy to compress and handle
Easier Installation + Better performance = GREAT VALUE!
APPLICATIONS:
HUSHMAT SILENCER MEGABOND is designed to eliminate higher frequency airborne noise that damping materials do not treat. Engine Noise penetrating through the firewall, wind noise behind door and pillar trim panels and above the headliner, Road noise caused by tires and road surface variation that comes through the trunk and cargo space. This noise is typically above 600 Hz frequency. SILENCER MEGABOND is engineered to absorb this noise. You enjoy the solid feel and quiet ride of your automobile. SILENCER MEGABOND in combination with HushMat Ultra provides excellent thermal insulating properties.
HUSHMAT SILENCER MEGABOND
- ½” Great for fire wall, floor (under carpet) and trunk applications. Also breaks up back wave. Cut and place 10” x 10” square of Silencer Megabond behind speakers in doors or enclosures.
- ¼” Great for behind door trim panel and on back of headliner
- 1/8” Great for all plastic trim to prevent rubbing “squeaking” of trim. Peel release paper and adhere to back of plastic trim.
PRODUCT DETAILS:
HUSHMAT SILENCER MEGABOND is a compressible closed cell synthetic rubber material. It consists of foam with an aggressive adhesive on one side that bonds to surface. HushMat SILENCER MEGABOND uses an adhesive that permanently bonds to the substrate.
SILENCER MEGABOND provides outstanding acoustic and sealing properties. SILENCER’s MEGABOND closed cell molecular construction offers aggressive sound absorption properties over a broad frequency range and also compresses to provide exceptional sealing properties. SILENCER MEGABOND also provides excellent thermal insulation.
SILENCER MEGABOND is also outstanding in Home Theatre, skylights, roof panels, curtain walls, windows, boats, yachts, ventilators, HVAC equipment, pump rooms, laundry equipment, generators, machines, motors, autos, recreational vehicles, enclosures, cabinets, refrigerators, dish washers, washers and dryers, office furniture.
TYPICAL PROPERTIES:
DENSITY: | 6.6lbs./ft.3 | TEMPERATURE RANGE: | 300F to -40F |
ELONGATION: | 510% | FLAMMABILTIY STANDARD: | FMVSS 302 |
TENSILE STRENGTH: | 14.3 lbs./in 2 | THERMAL INSULATION R:VALUE | 6 |
SOUND ABSORPTION: | Excellent | THICKNESS RANGE: | 1/8 in. to 1 in. |
at 600-4000Hz | WIDTH RANGE: | 1/4 in. to 36 in. | |
COMPRESSION LOAD: | ADHESIVE STRENGTH | ||
at 25% | 0.3 lbs./in.2 | BUTYL | 79 oz./in. |
at 50% | 0.7 lbs./in.2 | ACRYLIC | 45 oz./in. |
WEATHERABILITY: | Excellent | AIR PERMEABILITY: | Very Low |
WATER ABSORPTION: | 1.6% or less |
HushMat FAQs
Click on the questions below to reveal the answers
Damping is the physics that converts vibration energy into heat. The HushMat Ultra is formulated to dissipate (reduce) this energy and absorb it into the material at any temperature below 550 degrees F (288C). This dramatically reduces the vibration energy and the noise that comes from it. Damping is primarily a mass over area physical science and damping materials characteristics are relevant in three primary areas:
- Adhesion –
- Conformance/Flexibility
- Weight/Mass
HushMat is superior in all three areas when compared to the other brands. HushMat provides superior adhesion across the broad temperature spectrum from -30 to 550 degrees F. HushMat is significantly more flexible than competitive brands, even in freezing temperatures, and no heat guns are needed nor special tools to install it. All you need is a pair of hands and a pair of scissors. HushMat is thinner. However it is slightly higher weight per square foot than the closest competitor. HushMat contains no plastic or asphalt fillers, therefore, you do not have to double layer the application. HushMat is also manufactured in the USA!
Street rods, hot rods and muscle cars and your daily driver vehicle have significant heat that penetrates through the firewall, tunnel and roof. There are several areas on a vehicle interior that experience above average temperatures. The firewall, the tunnel, near the header, above the exhaust, sun light pounding on the roof to name a few. HushMat Ultra comes in dimensions that offer excellent thermal properties. The 1.5mm & 0.47 pounds per square foot compound blended butyl rubber and foil laminate construction provide an excellent treatment for these difficult application areas.
For extra thermal protection apply ½” Silencer Megabond directly on top of HushMat Ultra on the firewall, tunnel and trunk floor for optimum thermal insulating performance. Apply ¼” Silencer Megabond to the back of the headliner for extra insulation from the radiant heat. Call or e-mail us and we can provide you with the best material for these applications. HushMat Ultra is specified to perform at up to 550 degrees F. HushMat Ultra II Hoodliner can also be applied to the engine side of the firewall, hood and front quarter panels.
HushMat Silencer foam should be applied to the following areas:
- ¼” back of door trim panels with foam facing outer skin of door
- ½” under carpet adhered to HushMat Ultra on dash and floor,
- ½” or ¼” under trunk fabric adhered to resin layer of trunk fabric, and rear wheel wells,
- ¼” above the headliner adhered to fiber board of headliner,
- 1/8” on the back of all loose plastic trim or anywhere that plastic and metal rub together and create that annoying squeak and rattle.