Underbody Coating
AIM : To know about the undercoating , its purpose , pros and cons .
Underbody coating :
- Underbody coating is a thick cladding that is placed uniformly to the cars underside.
- When th automobile is fresh off the lot and spotless , it is usually sprayed or painted on .
Types of underbody coating :
Rubberized underbody coating :
- This is widely used underbody coating for car .
- It protect the underbody from the scratches.
- It is very easy to apply this to undercarriage.
- Rubberized coating is ideal if we want to keep the road noise to a minimum and rust and corrosion away .

Wax based Underbody coating :
- It is the most cost - effective alternative .
- Wax based undercoating is resistance to dampness .
- It will fade away after few months.

Asphalt based undercoating :
- It is suitable for heavy vehicles .
- It gives high level of protection .
- It incorporates small quantity of rubber for sound insulation .
- It will take more time for itd application .

Polyurethane underbody coating :
- This covering seals breaks and fractures in the vehicles underbody .
- It provides strong corrosion resistance .
- It also binds to the metal .
- The polyurethane coating may be painted over .

Advantages of undercoating :
Protection against rust :
- Undercoating is useful where there is excessive humidity , snow and monsoon seasons .
Absorb noise :
- Very strong under coating can attenuate noise that enter the cabin.
Reinforcement :
- If your car already has an underbody covering , anoter layer will not harm it .
- It will provide futher protection.
Prolong cars life :
- A good undercoat protects not just the underbody from corrosion , but also the engine and gearbox.
Disadvantages of underbody coating :
1 ) It is less helpful if the corrosion is already present :
- If we apply it over corrosion , body is isolated from outer surrounding but existing oxidation process will still continue to occur.
2) it works best on the new cars .
3) A third party under coating might void your vehicles warranty .
4) It must be required every 4-5 years for the best results .