Underbody Coating
UNDERBODY COATING
Underbody Coating is a sprayable coating, which protects the undersurface of the vehicle from corrosion.
Underbody coating provides long-term protection from corrosion to the 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.
Protecting the underbelly of the car should be our top priority. Especially during monsoon when heavy precipitation causes the roads to become mini-rivers and our cars are left stranded there. This makes them prone to heavy corrosion in the underbody region.
WHAT IS UBC (Underbody coating):
Underbody protective coatings are used to protect the vehicle chassis from the external environment, to ensure the integrity and safety of cars. The use of UBC plays a very important role in the service life of the vehicle. In general, it is required to spray such a protective coating in the manufacturing of the new car. Due to the high competitiveness of new car sales, car producers have pressure to reduce the manufacturing cost, so that they reduce or even eliminate the use of underbody coating where it is not to be easily seen by car owners. As a consequence, our car service life will be greatly reduced.
Many car owners all know to regularly maintain the vehicle by changing the engine oil and having the paint polished, but little attention has been paid to the bottom of the car. There are many cars that the surface looks glossy, while the underbody already rusting.
PURPOSE OF USING UBC:
1. Prevent from stone chip
There are thousands of pieces of stones on the road, and they are constantly hitting your car on the underbody, wheel arches, sills, and the trunk lower part while driving on the road. In some cases, the underbody might be scratched by uneven road. As such the thin corrosion protection coating on the metal sheet will be destroyed and leave the bare metal exposed to the air, which will soon come to corrosion when contact with the moisture in the air. If not promptly getting anti-rust treatment, then the rust will soon spread to large areas. Underbody coating or the anti-stone chip coating is a thick elastic layer that could not be easily damaged by stone chipping or scratch, therefore could protect the metal sheet of the underbody.
2. External influence
The external environment, such as the baking from the hot road in summer, the road’s anti-frozen gent in winter, raining water, and the salty water in the atmosphere, will attach to the underbody of a car. Particularly in coastal areas, the wind from the sea will bring more salt to the air, which will accelerate the corrosion and reduce the service life of a car. While the underbody is covered by the thick and tight layers, it would act as a strong barrio to prevent these external substances from attaching to the metal sheet.
3. Keep the value
A car could keep a high value while it is well maintained. It means that if a car is well-treated underbody protection, it could keep the car in a good condition and extend the car’s service life, or you could charge a higher price in used-car trading.
4. Improve driving comfort
After curing, the underbody coating becomes a thick elastic coating covering the whole underbody, which could act as a good dampening material, significantly reduce the vibration of the metal sheet and reduce the noise inside the car.
It protects the underbody substrates from:
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Environmental conditions
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Impacts
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Dampens sound and vibration
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Insulates against cold and heat
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Protects against Corrosion
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Seals off seams
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Hides welds, repairs & bodywork with spray
Types-
Rubberized Undercoating
Rubberized Undercoating is easy to apply and offers sound cushioning as well as protection from dust, moisture, and dings or dents.
In addition to your undercarriage, rubberized undercoating is also safe to use on wheel wells and quarter panels, and dries to a soft rubbery finish that prevents further 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 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 the unoxidized metal. It also sands quickly in case you'll need to perform bodywork and can be painted over.
On the flip side, 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.
Wax or Paraffin-Based Undercoatings
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 an aerosol can and offer at least a base protection in moderately humid climates.
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.
Process-
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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.
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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.
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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 thinners. A Schutz disposable spray gun is the best option.
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No matter what type of vehicle undercoating you've selected, two coats will provide the optimum protection. Allow ample dry time between coats.
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Let the undercoating cure completely (usually overnight) before driving your vehicle on the road.
USES OF 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 extent.
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.
List of the Pros of a Vehicle Undercoating
- It provides a layer of protection against corrosion.
When undercoating is properly applied to a vehicle, then you’ll be providing the underbelly with a layer of protection against rust and corrosion. Instead of contacting the metal components of the vehicle, the debris encounters the undercoating, which then proactively repels the dangerous items away. Although an undercoating will eventually wear out, it can provide years of protection against premature corrosion. - It will extend the life of your vehicle.
Proper undercoating extends the life of your vehicle because of its rust-stopping power. Corrosion does more than affect the integrity of the metals in your vehicle. It can get into your metal wires and cables, affecting any component which is comprised of steel or aluminum. Even your transmission and engine have exposure to rust when there isn’t a vehicle undercoating applied. - It can be applied to damaged areas.
Over time, the underbelly of your vehicle is going to develop nicks, chips, and scratches because of the debris you encounter while driving. Unlike older forms of undercoating, which included the use of asphalt and animal fat, modern products provide a real layer of protection because they can morph into various areas of small damage. A modern undercoating is usually wax-based, which creates a living barrier that your vehicle can use to promote a self-healing experience. - It can be self-applied.
Rustproofing works best when you have this service professionally applied to your vehicle. If money is tight, however, and you have some basic car maintenance skills, then you can do the work yourself. If this service is applied at the dealership, - Multiple undercoating methods can be used.
Four different undercoating methods are commonly used on vehicles that require this service. The electronic method is used when rust is present to stop its corrosive effect, which is a method that receives mixed reviews. A standard undercoating method applies a tar-like substance to the exposed components of the vehicle underbelly. A dripless oil spray applies a waxy substance that fills in the entire body of the vehicle, which hardens when it dries. - The service might help with the cost of your insurance.
Vehicular insurance is based on risk. If you reduce the risks of a claim by giving your vehicle a proactive service, of which an undercoating applies, then it may lower your overall premiums. States which see high levels of cohesiveness, such as Mumbai, Chennai, typically see the steepest discounts with this advantage. Northern and coastal states might also see this benefit. - It may help to reduce interior noise.
When you’re driving, the sounds of the road can be soothing if they aren’t too loud. For lightweight vehicles, noise pollution can be overwhelming to the driver in some situations. Applying a layer of undercoating creates a barrier against the sound, which creates a quieter interior. After the service is performed, many drivers notice that audio levels are noticeably lower inside their vehicles.
List of the Cons of a Vehicle Undercoating
- It is less helpful if corrosion is already present.
For undercoating to be the most effective, it should be in place before the underbelly of your car begins to rust. If you apply it over corrosion, you will still isolate the metal from further moisture and airflow, which is good, but the existing oxidizing/rusting process will continue to occur. After the rust is already present, applying an undercoating will slow the continuation of the corrosion process and will make your vehicle look better… until the rust breaks its way through the layer of undercoating you’ve applied. If you have rust present, it is better to remove the rust and then apply the undercoating. - It works best on new cars.
If you’ve purchased a used vehicle, then the cost of preparing the underbelly for an undercoating might be more than the value of the car. You must remove all the residue from the bottom before it can be applied. Failing to do so will seal in the debris that is present already, which can lead to more problems. The best time to have an undercoating applied is when a vehicle is purchased new because it offers a superior level of protection then. - Most vehicles make it five years before corrosion begins to show.
For vehicle owners who purchase something new every 3 to 5 years, then rustproofing may not be a good use of your cash. Although undercoating does add value to a used car, that only applies when the rustproofing product used provides a transferable lifetime warranty. Most vehicles that are on the road today can make it five years before any corrosion begins to show. It may be 7 to 10 years before the functionality of the vehicle is negatively impacted by the lack of undercoating. - A third-party undercoating service might void your vehicle’s warranty.
Some new cars no longer need the undercoating service provided because the structure of the vehicle has it built-in already. If you hire a third-party provider to apply an undercoating, you could void the corrosion-perforation warranty that is factory-provided. Most vehicles today that leave the factory floor are all provided with included rust-proofing. - It adds weight to the vehicle.
Although the amount of weight added to a vehicle with an undercoating is minimal (between 10 to 20 kilos for most vehicles), there is a small element of fuel economy to consider. When your vehicle weighs more, the distance you can travel on a single tank of fuel is reduced. The undercoating might reduce your efficiency by up to one km, which creates a small additional fuel cost over time. Still, the effect on the mileage of this additional weight is negligible compared to the effect a driver can have by the way they drive. - An undercoating is not impervious to damage.
An undercoating can provide a hardened layer of protection against dirt and debris that may cause corrosion. Depending on where you drive, however, the lifespan of this product may be minimal. If you drive your vehicle on gravel roads or dirty areas frequently, you reduce the integrity of the protective layer. - It must be reapplied every 3 to 5 years for the best results.
The only way for an undercoating to provide ongoing protection for your vehicle is to have the service repeated frequently. Most owners can have a new layer applied in about 5 years without worrying about their underbelly being compromised. In salty or destructive environments, however, you may need to have a new undercoating applied every 3 years for the best results.
The pros and cons of a vehicle undercoating offer a complex opportunity to protect some new and used cars, but not all new vehicles require it. You must perform your due diligence on a vehicle you’re wanting to purchase to decide if this service is right for you. And, if the cost is an issue, it is possible to apply your undercoating, though such an action might void an active warranty.