automotive underbody coating protecting engine from below

Automotive underbody coating completes the vehicle’s protection

So much attention is given to the coating and paintwork of the visible aspects of a vehicle that the unseen places, such as the underbody, may get neglected. Automotive underbody coating protects a vehicle from everything the road can throw at it and more: it provides 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 advantages and types of automotive underbody coating, as well as where to find applicators and how to get your hands on the products in Singapore.

The 5 factors that make an underbody coating a must

If you have ever travelled in an old car down a gravel road you have heard the thunderous sound of hundreds of tiny stones being hurled at the underside of a vehicle. Not only is it deafening, it is also damaging. An underbody coating protects from:

  • 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.
  • Moisture –  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.
  • 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 – the layers 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.

Not only is automotive underbody coating protective, but it also makes the drive more pleasant and allows earlier detection of damage or other problems. The coatings also:

  • Minimise sound – The noise of debris hitting a vehicle, or vibrations from the road can be dampened by the application of an underbody coating. They prevent vibrations and because they are elastic they make far less noise when struck than the metal underneath.
  • Are easy to maintain – Giving the undercarriage of a vehicle a uniform appearance means cleaning it down is simpler and so is identifying possible problems.

Automotive underbody coating Singapore – Suppliers & Applicators

Underbody coatings for consumers are strictly aftermarket and dealer- or shop-applied. Dealers and automotive shops in Singapore provide these services. The coatings themselves are provided by companies such as AkzoNobel, Henkel and Sika. The cost of an anti rust 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.

Choose the right type underbody coating for your car

applying automotive underbody coating with a spray gun to a car bottom

Automotive underbody coating is usually spray-applied yet other methods exist.

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

  1. 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.
  2. 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.
  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 spray-applied, high build, and particularly good for salted roads.


Looking for a competitive quote? We are here to help!

Make use of our free coating quote service. Are you looking for coatings, paints, products or services? We connect you with the right coating partner.

0 replies

Leave a Reply

Want to join the discussion?
Feel free to contribute!

Leave a Reply

Your email address will not be published. Required fields are marked *