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How to insulate the bonnet of a vehicle?

Soundproofing and insulating the bonnet of a car
A vehicle's engine radiates noise to the bonnet. The bonnet reflects this noise to the surrounding area of the vehicle and in to the vehicle. In order to reduce this you can insulate the bonnet by applying a sound absorbing product. To insulate engine noise in the engine bay of a vehicle you can look the pages "Bulkhead & Firewall insulation” and “Floor insulation”. To insulate the bonnet you need to know how warm the bonnet can get and how space there is between the bonnet and the engine.

Insulating the bonnet
The best way to insulate a bonnet is to apply a sound insulation with heat resistant properties. Do not use anti-drumming or deadener if the temperature exceeds 70°C. And if you want to use anti-drumming, use the lightest type, in this case Vibraflex Normal. If you’re in doubt in any way, do not use anti-drumming, only use a sound absorber with the sufficient heat resistance. Acoustic products can never touch the engine. Sound absorbing products for bonnets:

  • Acusticcell PU  
    We recommend 13 mm for slightly curved surface. Max. temp: 80°C.
  • Acusticcell ALU
    For flat surfaces. Max. temp: 100°C.
  • Merfocell FC     
    For flat surfaces. Max. temp: 100°C
  • Aluglass
    Sound and thermal insulation. Max. temp: 400°C

Products for insulating the bonnet

Shop By
Application
Shopping Options
Category
Brand
  1. Merfocell 1 item
  2. Vibraflex 1 item
  3. AcousticcellPU 1 item
  4. AcousticcellVspAlu 1 item
  5. Aluglass 1 item
Colour
  1. Aluminium 1 item
  2. Black 1 item
  3. Gray 1 item
Description
  1. Plate 2 items
  2. Set 1 item
Height
  1. 15 1 item
  2. 25 1 item
Length
  1. 500 1 item
  2. 1000 2 items
Width
  1. 250 1 item
  2. 500 1 item
  3. 600 1 item
Price
  1. £20.00 - £30.00 3 items
  2. £40.00 - £50.00 2 items
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  1. Protective top layer resist dirt, oil and moisture.
    Acousticcell PU
    Insulation with PU Top Layer
    • Sound insulation, acoustic foam
    • Soundproofing vehicle, boat & enclosures
    • Self Adhesive, protective top layer

    Starting at £28.01

    (incl. vat)
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  2. Vibraflex Bitumen Anti-drumming sets
    Vibraflex | Anti drumming
    Sound deadening sheets
    • Bitumen damping sheets
    • Soundproofing & Sound deadener
    • Supple and self-adhesive

    Starting at £30.77

    (incl. vat)
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  3. Acousticcell noise absorber, heat reflective
    Acousticcell ALU
    Sound insulation, heat-reflecting
    • Soundproof engine compartment.
    • Heat-resistant top layer fibre mesh.
    • Self-adhesive, easy to process.

    Starting at £33.70

    (incl. vat)
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  4. Aluglass sound and heat insulation glass-fiber sheets
    Aluglass
    Heat-resistant engine insulation
    • Fibreglass with aluminium top layer
    • Heat resistant sound insulation.
    • For tight spaces, max. temp 400°C

    Starting at £51.13

    (incl. vat)
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  5. Merfocell FC - Sound Absorber with Heat Resistant Top Layer
    Merfocell FC
    Heat Resistant Acoustic Foam
    • Fibreglass cloth top layer
    • Moisture and heat-resistant
    • Soundproofing engine compartments

    Starting at £57.96

    (incl. vat)
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How to soundproof a car
On our soundproofing for vehicles page you can find all the solutions and products to soundproof and insulate any type of vehicle, car, campervan and buses. On our Tips page we have a section with guidelines and tips on how to improve car audio, reduce driving noise in a car, how to soundproof a campervan conversion, and sound insulation to minimise engine noise, exhaust noise and driving noise. Would you like advice on how to soundproof your car, or would you like product samples? Just let us know, we are happy to help you.


Shop By
Application
Shopping Options
Category
Applications
  1. Home 1 item
  2. Vehicles 5 items
  3. Devices 2 items
  4. Vessels 5 items
Brand
  1. Merfocell 1 item
  2. Vibraflex 1 item
  3. AcousticcellPU 1 item
  4. AcousticcellVspAlu 1 item
  5. Aluglass 1 item
Colour
  1. Aluminium 1 item
  2. Black 1 item
  3. Gray 1 item
Description
  1. Plate 2 items
  2. Set 1 item
Height
  1. 15 1 item
  2. 25 1 item
Length
  1. 500 1 item
  2. 1000 2 items
Width
  1. 250 1 item
  2. 500 1 item
  3. 600 1 item
Price
  1. £20.00 - £30.00 3 items
  2. £40.00 - £50.00 2 items