What are the precautions for spraying chassis armor?
3 Answers
Spraying chassis armor precautions are: Cleaning of designated areas: Before construction, the chassis and fenders and other construction areas must be cleaned thoroughly, and try to find a regular merchant to remove the four tires; Take protective measures: The exhaust pipe and wheels must be well protected, and do not wash the car within three days after installation. Introduction to chassis armor: The scientific name of automobile chassis armor is automobile chassis anti-collision, anti-rust and sound insulation ("UNDERCOATING" primer), a high-tech adhesive rubber asphalt coating. It is non-toxic, has high coverage rate and high adhesion, and can be sprayed on exposed parts such as the vehicle chassis, wheel hubs, fuel tank, lower fenders, and trunk. After rapid drying, it forms a strong elastic protective layer. The role of chassis armor: It can prevent the impact of flying stones and gravel, avoid the erosion of moisture, acid rain, and salt on the metal of the vehicle chassis, prevent the chassis from rusting and corroding, and protect the driving safety of the car owner.
I remember the first time I did undercoating spray, I learned the hard way. You must thoroughly clean the car's undercarriage and sand off all rust and dirt, otherwise the coating will crack or bubble. Choose a durable spray, don’t go for cheap stuff, and if the fumes are strong, it’s best to work in a well-ventilated area. I wore a mask, goggles, and gloves to avoid inhaling chemicals and damaging my lungs. When spraying, keep your hand steady, hold the spray about 20 cm from the undercarriage, and apply thin layers—multiple coats, waiting for each layer to dry before applying the next. Don’t spray too thick at once, or it will drip. After finishing, let the car sit for a day before driving. During each maintenance check, I also inspect the coating. If it’s worn, I touch it up to protect the undercarriage and extend its lifespan—saving money and hassle. Now, driving over potholes feels much more reassuring.
Spraying chassis armor is no joke when it comes to safety. I always prioritize health protection: you must wear a full-face mask, gloves, and goggles during operation, as the spray contains chemicals that can easily irritate the eyes or respiratory system. Spray in a well-ventilated area, such as a garage with windows open or outdoors, to avoid discomfort in enclosed spaces. The chassis must be thoroughly cleaned first—use a high-pressure water gun to wash away oil and dust, then dry and sand to remove rust. Apply the spray with even strokes, and multiple thin coats yield better results. After completion, wait half a day for the coating to cure before using the vehicle. This not only protects the chassis from corrosion but also extends its overall lifespan. Regular maintenance checks become easier too—after spraying, driving through wet areas won’t raise concerns about rust affecting performance, making the car feel more durable.
