Underbody Coating

Underbody Coating:
A Car Body is made up of several Metals such as Iron, Steel, Aluminum, Copper etc.
Rusting is the common term for corrosion of iron and its alloys. Corrosion is the reaction of Iron and Oxygen, as may present in Water or Air Moisture. Any Iron material when exposed to both oxygen and water is bound to rust, unless a preventive coating is applied on to it. A car’s underbody is exposed to the most wear and tear caused by muddy water, stones and other obstacles on the road. Because it’s not in plain sight, we often do not see the damage. Underbody Coating or Treatment offers a long term solution for issues related to corrosion and rust.

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. Getting a fresh coat can cost you up to ₹6,000.

Types of Undercoating

Process and Types of Underbody Coating:
The underbody coating is a hard coating on the underbody of the car, which is fast-drying, paintable, rubberized, non-toxic and chip-resistant all along the underside of the car. we can also get a thinner clear coat underbody coating which is like a lacquer that coats the entire underside of the car. Some even inject rust-preventive coating material into crevices such as the bottom of doors and door sills, to protect them from rust.
Types:
1. Rubberized Undercoating

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.

Rubberized vehicle undercoating is easy to apply and offers good cushioning as well as protection from dust, moisture, and dents. Which is generally the best option for protecting the vehicle’s underbody, as it provides the simplest and best protective measures against rust and moisture.

2. Polyurethane Undercoating
The other option for undercoating the vehicle is to use a polyurethane based sealant. This type of vehicle undercoating is a little bit quicker and easier to apply.This type of car undercoating generally requires a little bit more surface prep work before applying sanding and applying an etching primer to bare metals before using are generally recommended.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.

3. Wax or Paraffin-Based Undercoatings

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.A paraffin-based undercoating will be the cheapest and quickest option available with which to protect the undercarriage of the vehicle. However, keep in mind that it will wear off quicker than other types of undercoating and will need to be stripped and reapplied at least once every year.

4. Asphalt-Based 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.For standard vehicles, any of the above mentioned types of undercoating will provide sufficient protection. For large trucks and heavy machinery, asphalt-based undercoating provides a bit of extra durability against rocks, chips, and moisture. This type of undercoating also needs more cure time than the other three, and is not paintable, making it best to use only for underbodies.

Some benefits of underbody coating:
Rust Prevention
Ideally any additional underbody coating should be applied when the car is brand new and clean. Car manufacturers use thick paints and sealants for the underbody, but adding an underbody coat especially in coastal cities is useful. Salt water tends to corrode cars really badly.
On bad roads, flying stones and pebbles can chip off the original underbody coating and leave the metal exposed. Using underbody coating offer extra protection.

Sound insulation
The thicker underbody coatings used on cars also act as effective sound dampeners. They can reduce road noise and tire noise and make the cabin seem quieter due to the sound absorptive nature of rubberized paints.It minimizes the sound from underneath the car resulting a noiseless, smooth driving experience.

Easy maintenance
A uniform black underbody coating gives a car a clean look. It also makes the car easier to maintain by just hosing the underside down. You can be confident that slush build up won’t lead to rusting easily. Most underbody coats these days come with a five year warranty, which is the lifetime of such a coating.

Heat Insulation

It insulates the interior of the car from extreme temperatures from beneath the vehicle providing a 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.

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.

Some of the downsides to underbody coating:
High cost
Cost of underbody coating has come down, but is still expensive. This is because underbody coating offered by a car dealer is one way in which they make money off the customer.

Risk of damage during application
Care must be taken while applying underbody coating. This thick rubberized paint if not applied properly, can get into moving mechanical parts and cause premature failure – such as into the U-joint or CV joints in a cars propeller shaft or drive shafts. They can also hinder smooth movement of suspension components, if applied incorrectly. And there’s also the risk of overspray on to the car’s paint finish on the lower edges of the car.

Below you could see the Pictures of with and Without Underbody coating images.

Without Underbody Coating

With Underbody Coating