Why Underseal a Car?

Underseal (often called undercoating in the U.S.) 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.

Is underseal a good idea car?

If you want to preserve your car and ward off the welder, it's a good idea to invest in some underseal or other rustproofing. This is especially advisable if you live near the sea, regularly drive on rough roads or have had an advisory on an MoT for corroded components.

Is rustproofing a car necessary?

According to Hot Cars, your vehicle needs to be rust-proofed. ... According to Consumer Reports, “All modern cars are factory-treated for rust protection, and additional undercoating can do more harm than good.” Later on, your vehicle will need another rust proof treatment, but a new car is safe from rust's stain.