Basic coverage is a topic we usually ignore when detailing aspects of car design. Maybe because the preparation process seems obvious or because it feels like a boring topic.
Even so, the basic coverage of the project vehicle is important, and most of the cars we build at the technical center appear to be under maintenance, so that needs further discussion. This time the project car will be given a fairing. Undercoating done from Jr’s auto detailing is best for your cars.
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A certain coating on the vehicle body is necessary because bare metal quickly begins to rust when exposed to the weather. If you have hot rods or muscle cars that are mostly available but don't have rust streaks, chances are the factory primer is still doing its job.
Whenever you build or modify a car and expose bare metal sheets or manufacturing work, you must apply a protective layer to seal it. A base primer for the metallic spray can do its job in the short term, but heavier coats used will stick around.
The lower classes can last a very long time – as in decades. So if you lay a good quality mat on a well-prepared surface, it's not clear how long it will last. It's technically designed to cover truck beds, but the added durability is welcome. If the factory coated undercoat lasts for decades, a tablecloth that can withstand a heavy load on the tailgate will certainly last longer.