How to insulate the bonnet of any vehicle?

Why the bonnet of a car needs insulation
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 inside 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 what the distance is between the bonnet and the engine.

Insulating the bonnet
The best way to insulate a bonnet is to apply a combination of two types of products, anti-drumming and sound absorption. Do not use anti-drumming or deadener if the temperature exceeds 70 degrees Fahrenheit. 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:

Below you will find all described products for insulating the hood

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  1. Protective top layer resist dirt, oil and moisture.
    Acousticcell PU
    Dirt-resistant absorption foam
    • Sound absorbing acoustic foam
    • Automotive, Boats, Machine Noise 
    • Self Adhesive, Protective layer

    Starting at £28.01

    (incl. tax)
  2. Vibraflex Ontdreuning set
    Vibraflex
    Sound deadener sheets
    • Bitumen board with added mass
    • Sound deadening and sound insulation
    • High mass and self-adhesive

    Starting at £30.77

    (incl. tax)
  3. Acousticcell noise absorber, heat reflective
    Acousticcell ALU
    Absorption foam plate
    • PU foam with aluminium top layer
    • Oil, moisture and heat-resistant top layer, reinforced with fiberglass mesh.
    • Self-adhesive, easy to cut

    Starting at £33.70

    (incl. tax)
  4. Aluglass
    Aluglass
    Sound-absorbing sheet
    • Fiberglass mat with sturdy aluminium foil top layer
    • Sound-absorbing, heat-resistant panel
    • Good alternative to flammable foam products

    Starting at £51.13

    (incl. tax)
  5. Merfocell FC
    Merfocell FC
    Heat Resistant absorption
    • Glass fibre cloth (FC) top layer
    • Moisture and heat-resistant
    • Applicable in engine compartments

    Starting at £57.96

    (incl. tax)
  6. Isomat FM
    Isomat FM
    Sound-insulating floor mat
    • Plastic sheet with a resilient layer of PVC foam
    • Sound insulating
    • Suitable as a floor mat in, among other things, campers, trucks, tractors

    Starting at £60.24

    (incl. tax)
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How to insulate a vehicle
On our Vehicle Insulation page you find all the solutions and products for the insulation of any vehicle, cars, camper van or panel van. On our Tips & Tricks page we have multiple pages with guidelines and tips on car audio, Landrover and motorhome insulation. Need advice or product samples? Just let us know  by sending an email.