Any sign of rust on a car panel should be a cause for concern. Rust that is forming on the surface can create more damage to the car over time. One way to fix the problem is to get help from a (collision repair) shop.
Rust in the form of paint bubbles or brownish stains may soon make their way to the frame members and render the frame members useless, according to an article on AdvanceAutoParts.com. But, the problem can be remedied with a do-it-yourself (DIY) project. The same article offers steps to DIY minor surface rust from a car.
Removing rust from a car should be done when the weather is decent and when there is low wind. Or, the project can be done in the garage. Make sure the car is clean and dry before the project. If the car is the main vehicle of the household or business, take into consideration the time it takes to fix the problem. The project may take an entire day to finish because of the waiting time for primer and paint to dry. The estimated time of removing rust itself is thirty minutes to a few hours. And, the skill level requirement is intermediate, because the project also requires some know-how.
The following tools should be available:
Rust spots on a car roof or chips on the leading edge of a hood can be removed with an aerosol or liquid rust remover.
With tape used in painting, mask off the problem area. Then, follow the application directions as indicated on the rust remover. It most likely involves brushing or spraying the solution on the rust and letting it settle for a few minutes.
Afterwards, wipe the area with a clean cloth to remove any residue. Remember to wear protective gear as protection all throughout the process.
The solution should remove the rust on the surface a few minutes after the application. If there is still rust left, it can easily be removed with the use of sandpaper. The next step is to clean the area with soap used for removing grease and wax. Then, air-dry the surface before applying the primer.
The primer should be sprayed with a light to medium coat and then leave to dry for one hour. Spray three coats on the surface. And, to determine the velocity of the primer, try using it on a cardboard first.
Remember, rust problems that cannot be fixed by a DIY project should be handled by a (paint and body work) repair shop like Five Star Autoplex.