Repairing a rust spot on a car

January 18, 2019

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An ominous brown spot/stain on the fender or at the bottom of a door or at any other parts of exterior is nothing but a rust which is in layman’s term an electrochemical breakdown of iron-based metals called oxidation. So how do we go in repairing a rust spot on a car? Now, repairing rust spot on a car can be tedious task but it doesn’t mean that it cannot be prevented otherwise thousands of good cars would have sent to grave yards every day. However, understanding the rusting process along with the areas of your cars which are most likely be affected by it and a right approach to address this problem can save your car from going to the junkyard. Let’s have look at the basic of process of reaping a rust spot on a car along with cautions that prevent them.


Basic supplements

Repairing a rust on a car isn’t hard but it is rather a lengthy process and requires patience as waiting for primer and paint to dry between steps. You will need to spend about hundred dollars to get all the supplies required to fix the rusted areas of your car body. These supplies include; sandpaper, masking tape and poly sheeting, primer, polishing compound and touch-up paint, a tack rag and clear coat.

Note: you must identify the car manufacturer’s paint code in order to get the perfect color match for your car.

Step 1: Cover the vehicle with poly sheets

Mask the required area of the vehicle to protect it from overspray. Use the poly sheeting and tape it down around the rusted area. The final covering must be one or two foot away from the repair area.

Step 2: remove the rust

Repairing rust spot on a car obviously requires rust removal first. Peel of the blistered pain, use the sandpaper of different grit as required and feather the paint edges. Now, clean the sanded area start preparing for paint job.

Step 3: prime the surface

Start with epoxy primer (2-3 medium coats) coats as it provides a strong bond to bare metal and then spray the filler primer (15 minutes after the epoxy filler). Make sure it covers the repair area and have heavier coats on it. Don’t’ forget to sand epoxy off and clean before you go for lacquer filler primer. Lastly, sand the entire repair area.


Step 4: spray the base coat and add the clear coat

After sanding an entire repair area its time to apply the base coat in repairing a rust spot on a car. Hold the spray can about 12 inches away from the car body and spray the repaired area. Let it dry from 60 minutes at least. No need to sand it unless you have developed sags during the coating. In process of repairing a rust spot on a car, the clear coating is the hardest process as clear coat run easily and you will need to wait 48 hrs. until it gets dry to fix the paint. So, control your hands and spray several coats of clear coat and let it work gradually on surrounding area for perfect coating and shining blend lines.