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.
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
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
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.
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
Write one page about Underbody coating and its purposes.
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.
A sample view of with and without underbody coating