Basic Automobile Paint Preparation
Basic preparation starts with a clean job. There are two
types of contaminates: oil based and water based. Ignoring any of these two
basic cleaning steps may cause poor adhesion, and an undesirable finish.
The first step in any high quality repair is to wash the
vehicle with hot soapy water to remove water soluble contaminants such as
dirt, mud, brake dust, bird droppings, salt, as well as some polishes
and waxes.(use a wax free soap like a dish detergent) To completely remove
these water soluble contaminants use an all purpose cleaner / degreaser such
as Simple Green with hot water. For
best results it may be necessary to scrub the repair area using an ultra
fine waterproof sandpaper or scotch brite to remove these contaminates.
Oil based Contaminants
After removing waterborne contaminants, the next step
would be to use a solvent cleaner. A solvent based prep solvent is used to
removed oil borne contaminants like grease, oil, road tar, wax, polishes,
and silicones. You start be applying the prep solvent to a lint free clean
rag, apply generously to the vehicle using a second rag to wipe it dry. This
proccess may be needed a few times before repainting any surface.