KM Auto Detailing

FAQ & Resources

Your questions, answered honestly.

Common questions about ceramic coating, PPF, paint correction, window tinting, and detailing, answered without the sales pitch. If something is not worth it for your situation, we will tell you.

Common misconceptions

Eight things the internet gets wrong about paint protection.

Misaligned expectations before a service cause more dissatisfaction than the service itself. These are the most common ones.

Myth

Ceramic coating stops rock chips.

Reality

It doesn't. Ceramic is a chemically bonded hard layer. It resists UV, bird droppings, and light marring, but has no meaningful impact resistance. PPF is the product designed to absorb rock chip impacts.

Myth

Ceramic coating is a permanent, one-time application.

Reality

Quality professional coatings typically last 3 to 5 years under Australian conditions. Premium-grade products with consistent maintenance can reach 7 to 10 years. The extended marketing numbers assume controlled conditions most owners don't maintain.

Myth

Coating fills in scratches and hides existing swirl marks.

Reality

The opposite is true. Ceramic coating is transparent. It locks in whatever surface condition exists underneath. Defects become permanent, so paint correction must come first.

Myth

New cars don't need paint correction before a coating.

Reality

New vehicles regularly arrive with swirl marks from factory washing, transport, and dealer preparation. Some are ready for coating on arrival. Many are not. An inspection first is the only honest answer.

Myth

PPF will bubble, yellow, or peel over time.

Reality

Quality film from a reputable installer won't. Budget film applied by inexperienced technicians often does. The difference is the product grade and installation standard, not PPF as a category.

Myth

Self-healing PPF repairs rock chips and deep damage.

Reality

Self-healing applies to light surface swirl marks with heat activation. It does not repair rock chips, cuts, or deep damage. Expectations calibrated incorrectly here produce disappointment.

Myth

After ceramic coating, you never need to wash the car.

Reality

Regular washing is still required. Contaminants still accumulate and can etch the coating over time. The difference is that washing is easier and the paint stays cleaner between washes.

Myth

The dealer's paint protection package is equivalent to specialist coating.

Reality

Dealer products are typically entry-grade, applied with minimal preparation and by untrained staff. The preparation work (which determines the result) is almost always skipped. That is why forum consensus on dealer paint protection is so consistently negative.

Frequently asked questions

Real questions. Straight answers.

Questions are drawn from forums, client consultations, and the real phrasing people use when researching these services online.

Ceramic Coating & PPF

What is the difference between wax, paint sealant, and ceramic coating?

Wax is a natural product (typically carnauba-based) that provides 4 to 8 weeks of light protection before washing off. Paint sealant is a synthetic polymer that bonds more durably to the paint, lasting 6 to 12 months. Ceramic coating is a semi-permanent silica-based layer that chemically bonds to the clear coat, providing years of protection with significantly greater hardness and chemical resistance. They are different products at different price points solving different needs (not a quality ladder).

Does ceramic coating actually stop rock chips?

No. This is the single most common false expectation in the market. Ceramic coating is a hard, chemically resistant layer that protects against UV degradation, bird droppings, industrial fallout, and light marring. It does not provide meaningful protection against rock chip impacts. PPF (a physical polyurethane film) is the product designed for that purpose. Choosing ceramic expecting chip protection will result in disappointment.

How long does ceramic coating last in real-world conditions?

A quality professional coating, correctly applied with proper preparation, typically lasts 3 to 5 years under Australian driving conditions. Premium-grade products with consistent maintenance (hand washing, avoiding automatic car washes, annual inspections) can extend this to 7 to 10 years. The headline durability figures used in marketing assume conditions most owners cannot reliably maintain. We give clients honest timelines during consultation.

Do I need paint correction before ceramic coating?

In most cases, yes. Ceramic coating is transparent. It locks in and amplifies whatever surface condition exists underneath. Swirl marks, fine scratches, water spot etching, and oxidation all become permanent features once the coating bonds. The extent of correction required depends on the paint's actual condition, which is why inspection comes before recommendation.

My car just came off the showroom floor. Does it still need paint correction?

Often yes. New vehicles regularly arrive with swirl marks from factory washing, transit scratches, and dealer preparation work. Some are genuinely ready for coating without correction (particularly if the owner takes delivery before the car has been prepped). Many are not. We inspect first and tell you honestly what the paint requires.

Can I use an automatic car wash after ceramic coating?

No. Rotating brush car washes inflict the same swirl marks and fine scratching on coated paint that they do on uncoated paint. The coating does not prevent this. If maintaining a coated vehicle requires regular use of an automatic wash, ceramic coating may not be the right product for your situation, and we will tell you that during consultation.

Is PPF worth it if I only plan to keep the car 3 to 4 years?

Partial PPF on high-impact zones (front bumper, bonnet leading edge, mirrors, and door edges) costs considerably less than full coverage and protects the surfaces most exposed to highway debris. For shorter ownership periods, a targeted partial installation often makes more sense financially than full-car coverage. The investment also has a demonstrated positive effect on resale value when the car is in better cosmetic condition.

Can you apply ceramic coating on top of PPF?

Yes, and it is a common and effective combination. PPF provides physical impact resistance; ceramic coating on top adds hydrophobic protection, easier maintenance, and enhanced gloss depth. The two are complementary. Film protects against chips. Coating protects the film's surface and makes it easier to clean. Many clients working with new vehicles opt for this approach.

The dealer offered to add paint protection to the finance. Is that worth it?

Almost universally, no. Dealer-applied products are typically entry-grade, applied with little or no paint preparation, by staff not trained in paint finishing. The warranty terms are often written in ways that make successful claims difficult. Australian automotive forums have a decade of consistent negative reviews on dealer paint protection packages specifically for these reasons. Independent certified installation is a different and substantially better product.

Paint Correction

What is paint correction?

Paint correction is a controlled polishing process that removes micro-scratches, swirl marks, water spot etching, and oxidation from the clear coat layer. It does not fill defects. It mechanically levels the clear coat surface to eliminate them. The result is cleaner, deeper paint, not a temporary cosmetic improvement. Correction is a prerequisite for coating on any vehicle with surface defects.

Is paint correction removing the paint from my car?

A microscopic layer of clear coat is removed (measured in microns, not millimetres). Done correctly by a trained technician using the appropriate products and techniques, this is safe across multiple correction cycles over a vehicle's lifetime. The concern is legitimate, and the answer to it is technician skill and appropriate product selection. We do not recommend correction on paint that cannot safely support it.

How do I know if my car actually needs paint correction?

Look at the bonnet and roof in direct sunlight (natural light or under a single strong light source). If you see a web-like pattern of fine circular scratches, that is swirl marking from car washing. If the paint looks hazy or dull rather than glassy and deep, that is oxidation or contamination. If you are unsure, bring the car in for an inspection. The assessment takes a few minutes and we will tell you honestly what is there.

What percentage of swirl marks and defects can paint correction remove?

Typically 70 to 95% of surface defects. The limit is determined by defect depth: scratches and swirls that sit within the clear coat layer can be corrected. Damage that has penetrated through the clear coat into the colour layer cannot be corrected without repainting that panel. We will assess the paint and tell you realistic expectations before any work begins.

How long does paint correction take?

A single-stage correction on a standard sedan typically takes 6 to 8 hours. A two-stage correction (required for more heavily swirled or oxidised paint) takes a full day. Vehicles are left with us. The timeline is determined by the paint's condition, not the clock. We do not rush this stage, because its quality determines everything that follows.

My dark car looks full of swirl marks. Is that fixable?

Yes. Dark and black vehicles show swirl marks far more prominently than light colours due to contrast between the defects and the deep colour. They are also among the most visually dramatic corrections to perform. The improvement on dark paint is typically striking and immediately visible in sunlight. Black, dark blue, and dark grey vehicles are among the highest-value corrections for the result delivered.

Detailing & Maintenance

What is the actual difference between a regular car wash and a professional detail?

A car wash removes loose surface dirt. A professional detail decontaminates the paint (removing bonded iron particles, tar, and contamination that washing cannot touch), addresses the paint surface, and properly cleans and treats interior surfaces including leather, carpet, and upholstery. The result, tools, products, and duration are fundamentally different.

How often should I get my car detailed?

For a coated vehicle: a maintenance detail every 6 to 12 months keeps the coating performing correctly. For unprotected vehicles with regular use: quarterly to twice-yearly is a reasonable baseline. Actual frequency depends on how the car is used, how it is stored, whether it is exposed to coastal salt air, and what standard you want to maintain. There is no single universal answer.

Can professional detailing remove stains that have been there for years?

Many long-standing stains can be substantially reduced or removed (pet contamination, coffee, food spills, and biological staining typically respond well to professional extraction and treatment). Stains that have permanently set into fabric or leather over many years may not fully extract. We assess the interior honestly before starting work and tell you what is and is not achievable.

Will headlight restoration last, or will the yellowing just come back?

Professional headlight restoration with a UV-resistant clear coat applied after polishing lasts significantly longer than a DIY kit (typically 2 to 4 years before maintenance is needed). The difference is the protective clear coat application after polishing. A DIY kit polishes the lens but leaves the surface exposed to the same UV that caused the yellowing, so it returns quickly. The long-term result depends on what goes on after the polish.

Is it worth detailing an older or lower-value car?

Yes, for two independent reasons. The hygiene and comfort of the interior affects everyone who spends time in it daily (that value is independent of the car's market price). And maintenance detailing preserves the vehicle's condition, which has a real effect on resale return regardless of age or current value. A well-maintained interior on a high-mileage car returns proportionally more at sale than a neglected one.

Window Tinting

What are the legal tint limits in Victoria?

In Victoria, front side windows must allow a minimum of 35% visible light transmission (VLT). Rear side windows and the rear windscreen must allow a minimum of 20% VLT. The front windscreen cannot be tinted except for a narrow sun visor strip at the top of the glass. Factory glass tint is included in the calculation (the combined VLT of factory glass plus added film must meet the minimum). Installing film without measuring factory VLT first is how people receive defect notices.

My factory glass already has some tint. Does that affect what I can add?

Yes. The legal VLT limit applies to the combined light transmission of factory glass and any added film. Before recommending any film grade, we measure the factory VLT on your specific vehicle. Many modern vehicles arrive with factory glass that is already 70 to 80% VLT (which still leaves room to add film legally). Some arrive closer to the limit, which constrains what can be applied to the front windows. We measure before we recommend.

Will darker tint affect night visibility?

Rear and rear-side tinting at the legal minimum (20%) does reduce light transmission at night. The visual effect is real, and it is worth considering if night driving is a significant part of your use. Front side windows remain at 35% minimum, which has a more modest effect. We explain the options clearly so you can make an informed decision about where to prioritise coverage and film grade.

Does window tinting actually reduce heat inside the car?

Yes. Quality ceramic tint blocks a significant proportion of solar heat gain (up to 60% with premium film) by rejecting infrared radiation rather than just blocking visible light. In Australian summer conditions, this is a tangible comfort improvement and reduces the load on the air conditioning. Budget dye-based film provides some heat reduction, but degrades with UV exposure over time. The heat performance of a tint depends on film quality, not shade percentage alone.

Will cheap tint go purple and fade?

Yes. Budget dye-based film degrades with UV exposure. The dye breaks down over 2 to 4 years, producing visible purple discolouration and reducing optical clarity. Quality carbon or ceramic films do not contain dye and are significantly more stable long-term. The price difference between entry and quality film reflects genuine performance and longevity differences. A faded or discoloured installation looks worse than no tint at all.

Pricing & Process

How long will my vehicle need to stay with you?

Full ceramic coating including preparation: typically 1 to 2 days. Paint correction only: half a day to a full day depending on the stage required and vehicle size. Interior detail: usually completed same day. Window tinting: same day. We confirm timing during consultation so you can plan. The timeline is set by what the job actually requires, not by a fixed schedule.

What do I need to do after ceramic coating is applied?

The first 48 to 72 hours after application are the curing period. The vehicle should be kept dry (away from car washes, rain, bird droppings, and heavy dew) while the coating sets. We provide specific aftercare instructions on handover, tailored to the product applied. This initial period directly affects how the coating bonds and performs long-term. It is not optional.

How do I know which service is right for my car?

The honest answer is that it depends on the vehicle's paint condition, how you use it, how it is stored, and what you want to achieve. We do not recommend the highest-spend option by default. A consultation (in person at the studio, or by phone) allows us to assess the vehicle and give you a recommendation you can trust. Most consultations take under fifteen minutes.

Do you operate from a fixed studio or do you offer mobile services?

All work is performed at our studio at Unit 5/53 Douro Street, North Geelong. We do not offer mobile services. Controlled environment conditions are essential for quality ceramic coating and paint correction work (temperature, dust, humidity, and lighting all directly affect the result). Mobile application of professional coatings is a real limitation, not a marketing claim.

Why this matters

An informed client makes a better decision. Every time.

Most service disappointments in this industry trace back to mismatched expectations (not poor workmanship). A client who expects ceramic coating to stop rock chips will be disappointed regardless of how well the coating was applied. A client who understands what the product does and doesn’t do will be satisfied with the same result.

This page exists because we would rather spend fifteen minutes answering questions correctly than spend fifteen months managing expectations that were never set. If something here raises a question that isn’t answered, bring it to the consultation. We will answer it honestly (including “that service is probably not right for your situation.”

Still have a question we haven’t answered?

Contact us directly or book a consultation. We’ll assess the vehicle, answer your questions, and give you a recommendation based on what the car actually needs. No obligation to proceed on the day.