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. In Indian road conditions, a cars underbody is most prone to corrosion. Underbody coating provides long term protection from corrosion to car’s underbody. It also protects parts like internal body panels, frame rails and other inner cavities that are not physically accessible but are prone to corrosion.

Purpose
- Minimizes Sound: It minimizes the sound from underneath the car resulting a noiseless, smooth driving experience.
- 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.
Types of Underbody coating
- Rubberized Underbody Coating
- Wax Based Underbody Coating
- Asphalt Based Automotive Undercoating
- Polyurethane 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 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 or Paraffin-Based Underbody coating
A paraffin-based undercoating will be the cheapest and quickest option available with which to protect the undercarriage of your 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.
Wax-based undercoating’s never truly harden. During application, they drip or flow into seams and cracks to provide protective properties. They are usually available in a spray gun canister or in an aerosol can and offer at least a base protection in moderately humid climates.

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.

Pro's of Undercoating
Now we will tell you why you should consider investing in a vehicle 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.
Con's of Undercoating
- Like many chemical-rich products, the average undercoating is a gateway to organ failure, cancer, infertility, and genetic defects. After doing a bit of digging, we discovered that quite a few brands don't even know what this stuff will do to the human body, with some of the more discerning case studies showing that "...25% of the mixture consists of ingredient(s) of unknown acute toxicity.
- So spray safely, and always wear a ventilation mask, protective eyewear, gloves, and a painter's suit when working with undercoatings.
- This waxy substance is derived from a naturally occurring gland secretion found in fluffy animals like sheep.It is within these hair follicle glands that lanolin exists. A sticky secretion that provides cud-chewing critters like the ultra-fluffy Merino breed of sheep with a waterproof coat that keeps them dry and warm in winter.On the downside, because lanolin is basically a livestock secretion, it smells sort of like... well... stank-ass sheep glands. This repulsive aroma is even more notable when lanolin is exposed to warmer temperatures too. So if you notice that no one is parking next to you in summer, it might be because they can't stand the stench of your undercoating.
- But perhaps the biggest complaint people have about automotive undercoatings and rustproofing procedures, is how much they cost. This is precisely the reason why many people opt to take matters into their own hands, and attempt to undercoat their automobiles on their own.