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 which protects the under surface of the vehicle from corrosion.
It also protects parts like internal body panels, frame rails and other inner cavities that are not physically accessible but are prone to corrosion.
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.
Under body coating is also done to protect against impact damage from small stones, which would rapidly chip ordinary paint, allowing rusting to begin.
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.
Overall, Rubberized Undercoating is generally the best option for protecting your vehicle’s undercarriage, as it provides the simplest and best protective measures against rust and moisture.
- Polyurethane Undercoating
The other option for undercoating your vehicle is to use a polyurethane-based sealant. This type of vehicle undercoating is a little bit quicker and easier to apply.
Oftentimes, polyurethane undercoating will come in canister preload into an application gun. This type of sealant works by seeping into all cracks and seams, displacing salt and moisture and oozing around rusty areas to bond with and protect oxidized metal. It also sands quickly in case you’ll need to perform bodywork and can be painted over.
On the flipside, 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.
- 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.
- 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.
Advantages:
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.
Disadvantages:
The undercoating or rustproofing spray is heavy in pockets.
Frequent Service is required in Underbody coating to provide good protection.