Boiled down to basics, rust-proofing is the treatment of specific areas all around the vehicle where rust can claim an initial foothold. Undercoating is the sprayed application of a wax or rubber-based composite onto the entire underside of the vehicle.

Is rustproofing and undercoating worth it?

Rustproofing and undercoating your vehicle can protect it from corrosion and rust. This is especially important for the undercarriage of your vehicle, which commonly comes into contact with substances such as water, chemicals such as salt, and other dirt and debris from the road.

Does undercoating stop existing rust?

Rubberized undercoatings do a great job of keeping existing rust all covered up and looking sharp, but it does absolutely nothing to slow down the spread of rust and corrosion sometimes the trapped air and moisture may even contribute to rust formation as was the case with GodwinAustin.