Underbody Coating

UNDERBODY COATING :

Underbody coating is usually a dense cladding (often based on rubber) applied uniformly 

to the undercarriage of the automobile. It is normally sprayed or painted on when the
 
car is just out of the dealership and is clean. But even if you are getting the 

undercoating applied after a couple of years, it’s fine too. This is because it can 

prevent further damage to the undercarriage.


The main purpose of undercoating is to check rust especially in the body components like 

frame rails along with other exposed metal parts. Underbody coating can also reduce wear 

and tear.

* Types of Underbody coating

- Rubberized Underbody Coating

This is generally thought of as the best underbody coating for your car. It preserves 

the underbody well, protecting it from scratches. Applying this to the undercarriage is 

not much of a hassle either.

- Wax Based Underbody Coating

This – more or less – ephemeral undercoating will wear away in a few months’ time. On 

the upside, wax-based undercoating puts up a big fight against moisture. It is also the 

most affordable option out there.

- Asphalt Based Automotive Undercoating

Best suited for lorries, trucks and large vehicles this provides a greater degree of 

protection compared to rubber-based coatings. However, asphalt-based coatings contain 

little amounts of rubber for sound-insulation purposes. The process of applying this 

coating is a bit time-consuming though.

- Polyurethane Underbody Coating

This coating closes up splits and fractures on the underbody of the vehicle. It offers 

up good protection against corrosion and also bonds with the metal. Unlike in the case 

of asphalt-based coating, you can paint over the polyurethane coating.

* Advantages of Undercoating

- Fights Rust

It plays an important role in keeping corrosion at bay. Underbody coating can come in 

handy especially if you live near the sea, where there is too much humidity, and rusting 

is just one of those everyday things. You should also seriously consider undercoating if 

you reside in a place where it snows in winter.

- Absorbs Noise

The very thick undercoating can soften the noises that reach the cabin. Since the 

undercoating is often made up of rubber it absorbs some of the rackets. The occupants of 

the car could spare themselves of the road noises – at least up to a certain extend.

- Reinforcement

If your car comes with stock underbody coating, using another coating on top of it, is 

not going to hurt. It will offer additional reinforcement, protecting the underbody from 

water, road debris, gravel and small pebbles. There would also be a lesser chance for 

the factory coat to flake away.

- Prolong Car’s Life

Good undercoating not only defends the underbody from corrosion but also protects the 

engine and transmission as well! Less rusting coupled with slower wear and tear can 

surely add years to the lifespan of your vehicle. There would be fewer dents, dings and 

scratches on the undercarriage for you to fret about.

* Disadvantages of Underbpdy Coating

Nothing comes for free in this world. The same goes for undercoating. The undercoating 

or rustproofing spray is heavy in pockets. However, it is nothing when you compare it 

with the cost of replacing a vehicle after corrosion.