car underbody coatings protecting car from sand

Car underbody coatings protect the out-of-sight areas

Much attention is paid to the coating and paintwork of the visible aspects of a vehicle that the unseen places may get overlooked. The car underbody is one such place. Car underbody coatings protect a vehicle from everything the road can throw at it and more: they provide a layer of protection between a vehicle’s more vulnerable underside and damaging forces such as corrosion and moisture ingress.

In this article we will outline the benefits and types of car underbody coatings, and where you can find products and applicators in Qatar.

The 3 types of car underbody coatings

Automotive underbody coatings can be factory-applied or aftermarket. Most commonly these coatings are bitumen, wax and resin based.

  1. Bitumen-based
    These underbody coatings provide hard-wearing protection against stone chip damage and corrosion. They also have sound-deadening properties. Suitable across many substrates, but cannot be painted over. Can be applied by brush or spray, high build, and good for very tough conditions such as off-road.
  2. Wax-based
    An excellent anti rust coating suitable for all substrates. The wax is applied soft and cures hard, either by brush or spray, and can be layered thickly. It cannot be top coated.
  3. Resin-based
    Polyurethanes and rubber coating are popular because their elastomeric properties provide long-term stone chip damage and corrosion protection as well as sound deadening effects. These also have the benefit of being suitable for a wide range of substrates and they can be painted over. Can be sprayed, high build, and particularly good when exposure to salt is likely.

Why an automotive underbody coating is needed

If you have ever traveled in an old car down a gravel road you have heard the thunderous sound of hundreds of tiny rocks being hurled at the underside of a vehicle. Not only is it deafening, it is also damaging. When driving on a desert, the sand has a similar kind of abrading effect – just without the sound.

car with car underbody coating on a desert

Car underbody coatings protect car bottoms from sand when driving on the desert.

A car underbody coating:

  • Protects from corrosion
    The automotive coating process consists of at least five layers of protective and decorative paint. However, the underbody only receives the first two layers; those that provide the corrosion protection. But if that is the case why would another layer of coating be needed to protect from corrosion? The initial two layers provide corrosion protection, but are not very durable. Stone chip damage may expose the metal itself, leading inevitably to corrosion.
  • Prevents stone chip damage
    An underbody coating provides a durable elastic over the underbody and wheel arches which protects the substrate from stones, gravel, salt, and other debris which is thrown up by the road.
  • Minimizes sound – The noise of debris hitting a vehicle, or vibrations from the road can be dampened by the application of a car underbody coating. They prevent vibrations and because they are elastic they make significantly less noise when struck than the metal car bottom.
  • Prevents water ingress
    By covering cracks in the paintwork or joints in the undercarriage of a vehicle, moisture or water from humid or wet environments is prevented from creeping into the underbody and causing corrosion.
  • Is easy to maintain
    Giving the undercarriage of a vehicle a uniform appearance means cleaning it down is simpler and so is identifying possible problems.

Find products and suppliers of car underbody coatings in Qatar

Underbody coatings for consumers are strictly aftermarket and dealer- or shop-applied. Dealers and automotive shops in Qatar provide these services. The coatings themselves are provided by companies such as AkzoNobel, DINITROL, Henkel and Sika. The cost of a car underbody treatment varies across vehicle size, as well as how much preparatory surface treatment needs to be done, and which coating type is to be applied. If you want to know more about underbody coatings, or have a project that requires coating, get in touch! Our experts are ready to help, with collaboration from our coating partners. Just use the “Request a quote” button below and we will connect you with the coating solution for your needs.


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