Detailing Glossary

Detailing has a vocabulary, and most of it is used loosely. These definitions are the ones this site works to. Where a term has a page behind it, the definition links there rather than trying to compress a whole argument into two sentences.

The terms

Alkaline

A pH above 7. Alkaline pre-washes break down road film touchlessly and shorten wax, sealant and coating life while doing it. That is the trade, and the honest products state it — snow foam roundup.

Backing plate

The velcro-faced disc that attaches to a polisher and holds the pad. Its size determines which pads fit, and its thread pitch determines which machines it fits.

Bonded contamination

Particles embedded in the clear coat rather than sitting on it: iron fallout, overspray, rail dust, tar. Washing does not remove it; decontamination does — chemical decontamination explained.

Buffer trail

See hologram.

Carnauba

A natural wax from the leaves of a Brazilian palm. Warmer looking than synthetic sealants on dark paint and shorter lived.

Ceramic coating

A silica-based liquid that cures into a semi-permanent layer bonded to the clear coat. Claims on this site run from one to seven years — the coating roundup.

Clay

A soft resin bar, mitt, towel or block that shears bonded contamination off the paint under lubricant. Removes what protrudes above the clear coat — how to clay a car.

Clay lubricant

A dedicated spray that carries removed contamination away from the clay face. Water and shampoo are not adequate substitutes, and using them is the most common cause of self-inflicted marring.

Clear coat

The unpigmented top layer of modern automotive paint, providing gloss and UV protection. Almost every defect people want removed lives here, and it is finite.

Coated leather

Automotive leather finished with a pigmented polyurethane topcoat. Almost all modern car leather is coated, which is why oils cannot penetrate it — cleaner versus conditioner.

Compound

An abrasive liquid that removes clear coat to level defects. Coarser than a polish — the compound roundup.

Cut

How much material an abrasive removes. Produced by the combination of pad and compound rather than by the liquid alone.

DA

Dual action. A polisher whose pad spins and simultaneously orbits, distributing energy so heat does not concentrate. Its failure mode is stalling rather than burning — DA versus rotary.

Decontamination

Removing bonded contamination. Chemical decontamination dissolves ferrous particles; mechanical decontamination shears off what protrudes. Chemical goes first.

Dilution ratio

Parts water to one part concentrate. Optimum publishes 256:1 for No Rinse, which is the only dilution ratio published anywhere on this site — rinseless roundup.

Drying aid

A light mist applied to a wet panel before the towel touches it, adding lubricity so the towel glides. Most quick detailers do this job.

Dwell time

How long a chemical is left on a surface to work. Nobody in the decontamination category publishes a maximum, and the practical rule is never to let a product dry on paint.

Edgeless

A microfiber towel with no stitched or overlocked border. The edge is the stiffest part of a towel and the part most likely to mark paint.

Evaporator

The cold, permanently damp component behind the dashboard where air conditioning mold grows. The source of the smell that appears seconds after the fan starts — the odor guide.

Fallout

Airborne industrial and ferrous particles that land on paint and embed themselves. The orange speckling on white cars.

Filler

A component in some compounds that temporarily masks defects with oils, so a correction looks better than it is until the first wash. Filler-free products state so.

Foam cannon

A soap injector fitted to a pressure washer lance that produces a thick clinging foam blanket. Does not work on hose pressure — cannon versus gun.

Foam gun

The garden-hose equivalent of a cannon. Produces a thinner, wetter foam because hose pressure cannot drive the mixing and aeration properly.

GPM

Gallons per minute; a pressure washer's flow rate. For detailing it matters more than PSI, because flow is what carries dirt away and what a foam cannon needs.

Graphene coating

A silica coating with graphene oxide added to the resin. Makers claim advantages around water spotting and heat; none publishes comparative data.

Grit guard

A plastic screen in the bottom of a wash bucket that traps released grit below it, so the mitt cannot pick it back up. The cheapest meaningful upgrade in detailing — bucket roundup.

GSM

Grams per square meter: the density of a microfiber towel’s pile. Higher is not better, it is different — GSM explained.

High spot

Excess coating that was not leveled before it flashed, cured as a visible smear or rainbow. Caught early it wipes off; cured, it has to be polished off — coatings for black cars.

Hologram

A fine buffer trail left by a rotary polisher, visible as a shimmering pattern under direct light and nearly invisible under diffuse light. A DA does not produce them.

Hydrophobic

Water-repelling. The property that makes a coated car bead and sheet water, and the first thing to fade as a coating ages.

IPA wipedown

Wiping panels with a diluted isopropyl alcohol solution or a dedicated panel wipe to remove polishing oils, so you see the true correction result and a coating can bond.

Iron remover

A chemical that converts bonded ferrous particles into a water-soluble complex, turning purple or red as it reacts — iron remover roundup.

Marring

Fine surface scratching, usually from wash or drying contact. The spiderweb pattern visible on a hood in direct sun.

Microfiber

A split-fiber blend of polyester and polyamide, usually stated as 70/30 or 80/20. The polyamide fraction is the softer, more absorbent component.

OPM

Orbits per minute. A polisher's speed rating. Higher is not automatically better; long-throw machines run lower OPM because each orbit covers more ground.

Orbit throw

How far a polisher’s pad travels in its orbit, in millimeters. The single most decisive specification on a machine — the polisher roundup.

Paint correction

Removing a thin layer of clear coat to level out defects. The only subtractive step in detailing — what paint correction is.

Panel wipe

See IPA wipedown. A dedicated product sold for the same purpose; Gtechniq includes 500ml of it in its coating kit.

pH neutral

Around pH 7. A pH-neutral soap will not shorten a wax, sealant or coating. Almost every maker states the words and almost none publishes the figure.

PPF

Paint protection film. A thick urethane film applied over paint. Chemistry safe on clear coat is not automatically safe on PPF, and few products address it.

PSI

Pounds per square inch; a pressure washer's pressure rating. For car detailing, 1,500 to 2,000 is plenty and more adds risk rather than benefit.

Rinseless wash

A highly diluted polymer solution used in a bucket with no rinsing step, for light to moderate dirt — rinseless versus waterless.

Rotary

A polisher whose pad spins on a fixed axis. Corrects fastest, generates the most heat, and its failure mode is a burn rather than a stall.

Sealant

A synthetic protective layer between a wax and a coating in durability and in application difficulty — sealant roundup.

SiO2

Silicon dioxide, the silica chemistry at the core of ceramic coatings. CarPro publishes 70% for CQUARTZ UK 3.0, one of only two silica figures published anywhere on this site.

Sling

Tire dressing flung off the sidewall onto clean paint by rotation. Caused by applying too much or driving before it has dried.

Snow foam

A pre-wash foam applied through a cannon to lift loose dirt before any contact — snow foam roundup.

Swirl marks

Fine circular scratches in clear coat, almost always caused by wash and drying contact rather than by the road. See marring.

Topper

A sacrificial layer applied over a cured coating that takes the UV and fallout instead of the coating itself — toppers and quick detailers.

Two-bucket method

Washing with one soap bucket and one rinse bucket so released grit ends up in the rinse water rather than back on the paint — the method, step by step.

Water lift

Also seal suction: how many inches of water column a vacuum can raise. The specification that actually describes suction, and one that almost nobody publishes.

Waterless wash

A ready-to-use spray for a car that is dusty rather than dirty. Outside that limit it is a marring risk.

A term missing, or defined here in a way you disagree with? Tell us — the glossary is re-verified every 180 days like everything else, and corrections are made in place.