Purpose of Polishing

The purpose of polishing is to remove oxidation, swirls, scratches, water deposits and other imperfections from the paint. In contrast to a clay bar, which removes contamination, polishes remove surface imperfections. Polishing generally is the single most time consuming step in an exterior detail.

Polishes typically are classified in two categories, a chemical polish or abrasive polish. A chemical polish, sometimes called a prewax cleaner, cleans the surface and removes oxidation. An abrasive polish removes a small portion of the clearcoat or the base paint itself on single stage paint. Abrasive polishes are classified based on how abrasive they are. The abrasive polish with the most abrasion typically is called a Rubbing Compound. A Rubbing Compound will remove heavier scratches and swirls as well as oxidation. It can be compared to a very fine sandpaper. The abrasive polish with the least abrasion typically is called a finishing polish. A finishing polish is used to remove light oxidation and fine scratches and swirls. It is also used to remove the haze resulting from application of a more abrasive polish. Abrasive polishes work best when applied with a machine rotary buffer or machine random orbital buffer. Different pads are used on the buffer depending on the abrasion level of the polish.

An “All in One” product typically combines a chemical polish and sealant to be applied in one step. A “buff and wax” contains a high level of cleaner and U.V. protectant or carnauba, producing a polish and a protect effect. Unlike a chemical polish or abrasive polish, a glaze does not clean or abrade the paint. A glaze typically contains oils and kaolin to fill and mask minor imperfections remaining after polishing, and to enhance the brilliance of the finish. If a glaze is applied, it is used after use of a chemical polish or abrasive polish or All in One product but before application of a sealant or wax.