Undercoating provides an additional layer of protection and insulation to the undercarriage of a vehicle. Manufacturers may apply undercoating at the factory. It covers most of the car’s underside, including floor boards, pans, gas tank, wheel wells, frame and suspension parts, mufflers and exhaust pipes. The effect can be likened to blackcoating a road or parking lot.
Undercoating materials adhere to metal, even if painted. Most come in pressurized cans for easy spray-on application, although an even spread may be tough to achieve without professional applicators. Ingredients used in manufacturing include fiberglass, rubber, ceramics, silicone and asphalt, or petroleum.
In addition to protection from elemental damage, good undercoating can also reduce road and engine noise, leaving the passenger compartment quieter than before.
