Underbody Coating

UNDERBODY COATING

A car’s underbody is exposed to the most wear and tear caused by muddy water, potholed roads, stones and other obstacles on the road. Because it’s not in plain sight, we often do not see the damage. Underseal (often called undercoating in the U.S.) is a thick resilient coating applied to the underbody or chassis of an automobile.

Underbody coating protects principally against rust, stone-chipping, dirt and road salt.Road salt used during frost is a serious threat to the car’s underbody. Salt solutions corrode the underbody and cause holes to form. If the underbody coating has already become partially detached, salt damage is particularly common. It can be prevented by underbody coating car.

Historically a bitumen-based compound was used, but after approximately a decade this becomes brittle and water can become trapped between the underseal and body metal, counterproductively creating a more favourable environment for rust than if no underseal was applied at all. Wax-based underseals do not have this disadvantage but can be eroded and eventually washed off by enthusiastic use of a hot pressure washer. Rubber-based underseals are also sometimes used.

Vehicles for sale in some territories are not undersealed, because the climate is not sufficiently aggressive to warrant it. If such a vehicle is subsequently imported into a country with high rainfall, cold winters and where salting of the roads is common, application of underseal is strongly recommended to ensure the vehicle has a long life.

When concrete on streets, parking lots, or warehouse floors begins to degrade, there are a few methods of repair available. Concrete undersealing is a process by which hot asphalt is pumped underneath the concrete slab so it flows into patches that were hollow and eroded. After concrete undersealing, the concrete is more stable and can be overlaid with a thin layer of asphalt to repair cracks, saving the expense and time of replacing the entire surface.

Steps of underbody coating

 The car is hoisted on a lift and the underbody is inspected for flaws

 The under body is cleaned removing out the dirt and grease

 Critical components like silencer are covered in a film to avoid the coating from sticking to it

 Rest of the under body is spray painted evenly.

 The silencer film is removed and zinc coating is sprayed on it

 Final inspection is done to look out for flaws

 Done , the car is ready to leave the workshop.