Underbody Coating

Underbody Coating:

Underbody coating provides long term protection from corrosion to car's underbody.It also protect parts like internal body panels, frame rails and other inner cavities that are not physically accessible but are prone to corrosion.

In Indian road conditions, a cars underbody is prone to corrossion due to climate and weather conditions.

Seals on the underbelly parts have gotten a lot tighter and more effective at keeping out dust and moisture, but there are other factors to consider. Poor road, rocks getting thrown from the tires and denting the metal, and corrosion from road salt in the winter all play a huge part in the damage or decays of the vehicle's underbelly.

Types of Vehicle Undercoating:

(i) Rubberized Undercoating:

Rubberized vehicle undercoating is easy to apply and offers sound-cushioning as well as protection from dust, moisture, adn dents.

In addition to your undercarriage, rubberized undercoating is also safe to use on wheel wells and quater panels, and dries to a soft rubbery finish that prevents furthur rust, damage or moisture seeps. The coating can be painted over and, if necessary for bodywork, can be easily removed with an undercoating removal spray.

Overall, rubberized coating is generally the best option for protecting your vehicle's undercarriage, as it provides the simplest and best protective measures against rust and moisture.

(ii) Polyurethane Undercoating:

The other option for undercoating your vehicle is to use a polyurethane-based sealent. This type of vehicle undercoating is a little bit quicker and easier to apply.

Oftentimes, polyurethane undercoating will come in canisters ready to 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 unoxidized 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.

(iii) Wax or Paraffin-Based Undercoating:

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 undercoatings 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.

(iv) Asphalt-Based Undercoating:

For standard vehicles, any of the aforementioned 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.

Asphalt-based undercoating generally contains a little bit of rubberized material that sets up firmly and also helps soften noise. Generally sold in five gallon containers, this type of undercoating also needs more cure time than the other three, and is NOT paintable, making it best to use only for undercarriages.

Overall, rubberized coating is the best option for protecting your vehicles undercarriage, as it provides the simplest and the best protective measure against rust and moisture.

Process:

• when it comes to updating your vehicle or using any sort of coating, remove the rust completely FIRST and then proceed. Rust removal is easily achieved by sandblasting or sanding, depending on the area and the extent of the rust.
• Once you've removed the rust and prepped your undercarriage for coating, give it a quick rinse and let it dry to ensure you aren't further trapping any contaminants on your vehicle's underbelly. Using a degreaser to clean the metal first is also recommended.
• Most undercoating is generally applied with a spray gun. A disposable spray gun will work best; once the undercoating hardens, it becomes very difficult to clean the gun even with a lot of thinner. A Schutz disposable spray gun is the best option.
• No matter what type of vehicle undercoating you've selected, two coats will provide the optimum protection. Allow ample dry time between coats.
• Let the undercoating cure completely (usually overnight) before driving your vehicle on the road.

Pros:

• 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.

Cons:

• Undercoating is costly
• Corrosion can avoided only for few years after that anyhow the corrosion will start at the underbody based on its contact with the water, stones and dust.
• It does absolutely nothing to slow down the spread of rust and corrosion sometimes the trapped air and moisture may even contribute to rust formation