Underbody Coating

UNDER-BODY COATING:

Definition :-

It is a sprayable coating, which protects the under surface of the vehicle from corrosion.

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.

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.

In Indian roads car underbody is prone to rust easily as because of the seasonal & humid conditions.

Advantages of Underbody Coating-

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-

Believe it or not, 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 Underbody Coating-

• It won't do anything about the corrosion which is already present.
• It works best on new cars.
• A third party undercoating service might void your vehicle warranty.
• It adds weight to the vehicle.

Under-Body Coating Purpose:-

It provides longterm protection from corrosion to car's Underbody. It also protects arts like intdrnal body panels, frame rails and other inner cavities that are not physically accessible but are prone to corrosion.

Protecting the underbelly of the car should be our top priority, especially during monsoon when heavy precipitation causes the roads to become mini rivers our cars are left strandard there. This makes them prone to heavy corrosion in the underbody region.

It protects from ;

• Environmental Condition
• Dampen sound and vibration
• Impacts
• Protects against corrosion
• Seal off seams
• Insulated against cold and heat
• Hides welds, repair and bodywork with spray

A sample view of with and without underbody coating -

Types of Underbody coating –

1. Rubberised under body 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.

2. 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.

3. Asphalt based under body coating –

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.

4. 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.

Pros of underbody coating –

1. Fight’s 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.

2. Absorb Noise - 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.

3. Reinforcement - If your car comes with stock underbody coating, using another coating on top of it, is good. 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.

4. Prolongs car 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.

Con’s of underbody coating –

1. It’s less helpful if corrosion is already present.
2. It works best on new cars.
3. A third-party vehicle underbody coating may void warranty.
4. It adds weight to vehicle.
5. It’s not impervious to damage.

Pros :-

Minimize Sound ;

It minimizes the sound from underneath the car resulting a noiseless smooth driving experience.

Hear Insulation ;

It insulate the interior of the car from extreme temperature from beneath the vehicle providing comfortable cabin experience.

Anti-chipping Property ;

If any stone hits the coating it does not get chipped away hence protects the underbody from exposure to water.

Cons :-

Applying underbody coating will not have any effect to the already cooroded part.

Undercoating is costly.

Since the corrosion itself starts after few year underbody coating is not preferable to ower who change their after few year.