Underbody Coating

Challenge: 1. Write a one-pager about Under-Body Coating and its purpose, its types in detail, and its pros and cons.

Ans:

Under Coating: Each automotive vehicle needs underside protection from the environment. There are so many chances of the underside getting rust, damage & corrosion. To avoid this problem under coating concept is adopted. Undercoating is a process of spraying or coating thick cladding under the side of an automotive vehicle. Most coats & sprays used for undercoating are made of rubber.

Advantages of Under Coating

1. Fights against rust & corrosion caused due to humidity in the environment.
2. Absorbs Noise & avoids noise entering inside the vehicle.
3. Reinforcement can be obtained with a good amount of coating, which reduces the underside damage due to stone hits while driving.
4. Prolongs the vehicle's life by protecting the critical parts like the fuel system, axle, engine & exhaust system... etc.
5. Provides heat insulation.

Disadvantages of Undercoating:

1. When examining the vehicle undercoating pros and cons, you do want to look at potential downsides to getting undercoating.
2. Undercoating will work best on new vehicles that have not been exposed to road conditions.
   A used vehicle may already have residue on the bottom of the car or even have spots of rust and corrosion.
3. Undercoating will not help you if corrosion already exists and the corrosion must be removed first before it can be applied, which can be expensive for you.
   Types of undercoating.

1. Rubberized undercoating:

As the name suggests rubber is the main substance of this type of coating. The coated underside of the vehicle provides protection & cushioning effect against stone hits, moisture & dust.

Pros:

1. Applying this coat is very easy and simple.
2. Can be applied quickly without any fuss.
3. Undercoats provide a neat finish after the completion of the coating.
4. Provides good protection against rust, damage & moisture.

2. Wax or Paraffin-based Undercoating

It is the cheapest undercoat process, in which wax is the main substance of coating.

Pros:

1. Readily flows into seams to guarantee any exposed and prone surfaces are protected.
2. The most inexpensive undercoating option.
3. Conveniently available in spray guy canisters or aerosol cans.

Cons:

1. Wears off quicker in comparison to other types.
2. Unlike the rubberized type, it does not dry.
3. Needs to be stripped and reapplied at least once a year as soon as signs of wear and tear start to show.

3. Polyurethane Undercoating

This covering seals breaks and fractures in the vehicle's underbody. It provides strong corrosion resistance and also binds to the metal. Unlike an asphalt-based coating, the polyurethane coating may be painted over.

Pros:

1. It has a long lifespan and is resistant to wear and tear.
2. Easily and quickly applicable.
3. Trickles into cracks and rusty spots already present on the underbelly of your car and fill them, hence protecting the underlying metal.
4. Quick and simple to remove, as it stands easily.
5. Dislodges salt, moisture, and oozing around rusty areas to bond with and protect unoxidized metal.

Cons:

1. For better adherence, needs undercarriage preparation before application.
2. Requires time-consuming etching with primer to bare metals.

4. Asphalt Based Automotive Undercoating

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.

Pros:

1. Formulated to protect from dirt, rust, and corrosion, it normally has a shelf life of up to two years. Sold in five-gallon containers.
2. Provides extra durability as it is the strongest and thickest undercoating available

Cons:

1. It takes time to harden and so requires more cure time than the other three types.
2. Unlike the other three, it is also, not paintable as such, not very aesthetically suitable for standard vehicles.
3. For best used only for the undercarriages of utility vehicles and trucks
   The only type of undercoating with a limited warranty.

5. Water-based Undercoating

Water-based undercoating is a protective layer that helps your car stay protected from harsh weather conditions. It is made from an advanced polymer that is non-toxic and environmentally friendly.

Pros:

1. Thin-set, it takes a short time to dry.
2. Can be done at home.

Cons:

1. It requires frequent repetition as it's not very durable.
2. It cannot repel ice and water like petroleum-based undercoating.

6. Petroleum-Based Undercoating

Petroleum-based undercoating is a heavy, viscous oil-based liquid product that provides an effective barrier against moisture and corrosion.

The liquid dries and hardens to provide tough, durable, and long-lasting protection against moisture and corrosion. This product is typically applied to the undercarriage of automobiles, trucks, and other vehicles.

Pros:

1. Has greater deflective abilities for road salts and grime.
2. Repels ice and water because of its petroleum base.

Cons:

1. Requires annual replacement