Underbody Coating

Under Body Coating

By

Santhosh sivan. G

Under Body Coating, its types, Advantage and Dis-advantages:

Under seal is a thick resilient coating applied to the underbody or chassis of an automobile to protect against impact damage from small stones, which would rapidly chip ordinary paint, allowing rusting to begin. 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. For automobile they are some kinds of under body coating as below.

1. Rubber under body coating
2. Wax based under body coating
3. Asphalt based automotive undercoating
4. Polyurethane under body coating

1.Rubber under body coating:

This is 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. It absorbs unwanted noise and protect the under parts from damages.

2.Wax based under body coating:

Wax based under body coating is also known as 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 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 aerosol can and it offer at least a base protection in moderately humidity climates.

3.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. 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.

4.Polyurethane under body 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. 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 the metal. It also sands quickly in case you'll need to perform bodywork and can be painted over.

Advantages for under body coating:

• Fight the rust - it plays an important role in keeping corrosion at bay
• Absorb Noise- 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.
• 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.
• 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.

Dis-advantages for under body coating:

• High Cost- Cost for under body coating is cheaper, but it’s still cheaper
• Risk of damage during apply- his thick rubberized paint if not applied properly, can get into moving mechanical parts and cause premature failure
• Add weight- It gives some weight to the vehicle. Due to this the vehicle performance will be differ (Milage)

Related images:

Before under body coating:

After under body coating:

Conclusion:

The important for underbody coating as seen above. So, the under-body coating is to protect the vehicle from rust, moisture, noise and also prevent the under parts from the impact of small stones. It plays a major roll but the main dis-advantage is, it still expensive. Anyway, to increase the life time of the car-apply under body coating.