Underbody Coating

1. What is underbody sealent or coating?

Ans:- It is a process where the BIW or body in white is dipped into a ED solution (ELECTRO DEPOSITE) were it is make sure that the solution reaches to every part of the BIW so that the paint and sealent finishes properly. The process of ED is shown below:-

SEALENT:-It is a PVC based product which is applied on the base surface and mud flap side area of the car , it is applied cold and heat cured, it seals the joints of the BIW area where it has higher chance of water to get inside. Application of the coating is to avoid corrosion, entry of water, dust.

Underbody coating provided in indian budget cars is around 1 to 10mm for example Indica vista had the thickness of 1.5 to 9mm. I10 1st generation had the thickness maximum of 5mm.

Sealents also provide insulation from tyre noise and underbody chip hitting. It is even easy to maintain the underbody of the car as it provides the clean under body look of the car.

Things to check while appling the underbody coating is it should not get into the U joint or CV joint or in the propellor shaft or any moving part as it can cause permanent damage to the moving parts.