The five steps
What "prep" actually means.
A coating only locks in what's underneath it. Skip a step and you lock in swirl marks, embedded contamination or fallout for the life of the coating. The five things that have to happen, in order, before any product touches the panel.
01
The wash
Pre-rinse to soften surface dirt. Foam bath to lift contamination off the panel before contact. Hand wash with two-bucket method (one wash bucket, one rinse bucket with grit guards) so the wash mitt isn't dragging the same dirt back across the paint. Sounds basic. Almost nobody outside dedicated detailers does this correctly.
02
Iron fallout removal
Brake-dust particles and rail-dust contamination embed into paint over time. A wash doesn't shift them. An iron-removing chemical reacts with the metal particles (purple bleed effect) and lifts them out. Skip this step and the contaminants stay under your coating, sitting in the paint, slowly oxidising for years.
03
Clay bar across every panel
A clay bar pulls bonded contaminants that the wash and iron remover can't lift. Tree sap residue, overspray, industrial fallout, road tar. After clay, the paint feels glass-smooth under your fingertips. Before clay, it feels gritty. This is the difference between a coating that bonds properly and a coating that bonds to a layer of contamination.
04
Paint correction (or enhancement)
A machine polish with the right pad and compound combination removes swirl marks, oxidation and dealership wash damage. Light enhancement on a daily driver. Heavier correction on a car that's been through automatic washes. The coating goes on top of what's there, so the goal is to make what's underneath flawless first. Cut corners here and you cure swirl marks into the finish for the next five to ten years.
05
Surface prep + inspection under bright light
A panel wipe with a dedicated prep solvent removes polishing oils so the coating can bond to bare clear coat. Then every panel gets inspected under bright LED lighting at multiple angles, the way the paint will actually be seen in sunlight. Anything missed in correction gets a second pass before the coating gets applied. This is the step everyone notices when it's been done, because the panel looks like glass.