How long after spraying the chassis armor can the car be driven?
2 Answers
After spraying the chassis armor, avoid contact with water for half a month, and it can be used normally after one month. Below are the relevant details: 1. Introduction: The scientific name of automotive chassis armor is automotive chassis anti-collision, anti-rust, and sound insulation coating ("UNDERCOATING" primer), a high-tech adhesive rubber asphalt coating. 2. Function: It is non-toxic, has high coverage and adhesion, and can be sprayed on exposed parts of the vehicle such as the chassis, wheel hubs, fuel tank, lower panels, and trunk. After quick drying, it forms a strong elastic protective layer that prevents impacts from flying stones and gravel, avoids moisture, acid rain, and salt from corroding the metal parts of the vehicle chassis, prevents rust and corrosion, and ensures the driving safety of the owner.
I've personally witnessed many cases where cars were driven too soon after undercoating application, resulting in cracked coatings and rework hassles. Applying this stuff is like putting a new coat on the vehicle's underside - it must fully dry before use. Typically, water-based coatings require 4-8 hours to cure, while oil-based ones take even longer, possibly up to 24 hours. Don't believe those quick-drying advertisements - real-world experience shows that high temperatures (like summer sunlight) can speed up the process, but rainy days with high humidity require extra caution. Driving prematurely not only causes coating detachment, but road vibrations and dust adhesion make repairs even harder. I recommend waiting overnight as the safest approach - the coating should feel hard and non-tacky to the touch. Some premium products dry faster, but for peace of mind, it's best to wait until the next day and always check the product manual for specified drying times before driving.
