Underbody Coating

Underbody Coating

As the name defines, the coating which is applied to the underbody of any vehicle for its long life by protecting it from corrosion or rusting for lifetime duration.

It also protects parts like internal body panels, frame rails, other inner cavities that are not physically accessible but can be corroded.

Fig. : A guy performing Underbody Coating

There are many more benefits of underbody coating which we can discuss below :

1. Minimizes Sound: It minimizes the sound from underneath the car resulting a noiseless, smooth driving experience.
2. Heat Insulation: It insulates the interior of the car from extreme temperatures from beneath the vehicle provide a comfortable cabin experience.

Types of underbody coating

There are 4 types of underbody coating but the commonly used coating is rubberized coating. All 4 types of underbody coating are briefly explained as follows:

1. Rubberized Underbody Coating: It is easy to apply and offers sound-cushioning as well as protection from dust & moisture.

Fig. : Rubberized Underbody Coating

Rubberized coating is also safe to use on wheel rims and it dries to a soft rubbery finish that prevents further rust & damage.

As we know that the coating is painted over and if the removal of underbody coating is necessary then we can also remove it by the use of underbody coating removal spray.

2. Polyurethane Underbody Coating: This type of underbody coating is quicker and easier to apply.

Oftentimes, polyurethane coating comes in canisters which are ready to preload in the application gun. This type of coating works by seeping into all cracks and seams, displacing salt and moisture around rusty areas to bond with and protect un-oxidised metal.

3. Wax or Paraffin-Based Underbody Coating: This type of underbody coating is the cheapest and quickest option available with which to protect the underbody of the vehicle.Anyhow, this type of coating will wear off quicker than other types of coatings, and need to reapplied at least once every year.

4. Asphalt-Based Underbody Coating: This is totally different from the above mentioned coatings, this type of underbody coating is used on large trucks and heavy machinery to give them extra protection against rocks, chips, and moisture.

Fig. : Asphalt-Based Underbody Coating

This type of coating generally contains a little bit of rubberized material that is generally sold in a 5 gallon container. This coating also needs more cure time than the above mentioned coatings. And it's not paintable.

Some important Pros and Cons of underbody coating :

As we have mentioned the pros/benefits earlier in this document and the cons are as follows:

1. It is less helpful if corrosion is already present.
2. It works best on new cars.
3. Most vehicles make it five years before corrosion begins to show.