Undercoating

The car bottom is constantly exposed to moisture from the road surface. Undercoating will help to avoid oxidation and, as a result, progressive damage of metal elements. Undercoating products are chemical agents which create insulating barrier which prevents water from getting on car parts.

Types of undercoating

By purpose:

• Rust prevention products. They are used for prevention of oxidation processes; can be used for new cars treating.
• Rust converters. They remove existing minor corrosion traces with the help of chemical reaction. They are perfect for cars with large mileage. For better effect they are used together with preventive agents.

By product form:

• Liquid. Such products can be sprayed quickly and evenly with the help of a special gun. They are suitable for treating hard-to-reach places.
• Pastelike. Applying is performed manually and takes much time. But such agents protect car parts for longer time in comparison with liquid ones.

Formulation

The pastelike agents are usually produced on the basis of bitumen and synthetic resin. Aluminium compounds are used as additives increasing durability. The liquid agents often contain paraffin. Rust converters contain different acids, for example, ortho-phosphoric acid.

Tips on undercoating use

1. Before applying the agent you need to thoroughly clean and dry the car bottom. Also you need to remove residues of undercoating used before.
2. Visible corrosion spots should be removed with the help of a wire brush.
3. The agent should dry completely after being applied. Usually it takes at least a day. The exact time is specified in the instruction.
4. Protection suit, goggles and respirator must be worn during works because most agents are toxic.

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