How do I find a trusted car detailer to apply a ceramic coating?
Quick answer: Pick an accredited, well-reviewed detailer with a clean indoor studio. They should machine-polish before coating, use pro-grade products, allow overnight cure, provide insurance, written aftercare and a warranty, and show recent work. Be wary of 'lifetime' claims, bargain mobile jobs and same-day turnarounds.
The hard part of choosing a ceramic coating installer isn't spotting the obvious cowboys; it's telling apart two outfits that both have a nice website, both quote a sensible-sounding price and both say all the right words. The difference between them only shows up in the prep, the premises and the paperwork. Here is how we'd separate them if we were the customer rather than the workshop.
Accreditation tells you something, but not everything
Start by checking whether the detailer is accredited with one of the major ceramic coating brands. Accreditation means the installer has been through the brand's training and can buy the professional-only grade of product rather than the retail version. That's worth having. What it doesn't tell you is how careful they are day to day, how clean the unit is, or whether they'll cut a corner when a job runs late on a Friday.
So treat accreditation as a gate, not a verdict. It gets a detailer onto your shortlist; it doesn't get them the job. The things that actually decide the result -- correction quality, surface prep, a dust-free environment, sensible cure time -- are about discipline, and you read those from the workshop and the conversation, not from a certificate on the wall.
Why the price you're quoted sits mostly in the prep
Coatings are usually advertised at a headline price, and that price is a little misleading, because the bottle of coating is the cheap part. The expensive part is the hours spent before the coating ever touches the car: the wash, the decontamination, the claying or fallout removal, the taping-up of trim and badges, and above all the machine polishing to remove swirls and scratches.
This is the single most useful question you can ask: "how much correction is included?" A coating laid straight over swirled, marred paint will lock those defects in and make them permanent under a glossy layer. Proper preparation is most of the labour and most of the cost. If one estimate is dramatically cheaper than the others, the prep is almost always where the corners are being cut.
For that reason you want an all-in estimate, not just a headline figure, and you should expect an estimate rather than a fixed quote. Once prep starts, a polisher may uncover deeper defects -- a re-sprayed panel, lacquer thinned by a previous machine, holograms from a careless polish -- that need more correction than was visible on a dirty car. A good installer tells you before any extra work goes ahead, with a revised figure, rather than presenting a surprise on the invoice.
The studio matters more than the meters
A ceramic coating wants to be applied and cured in a controlled space: indoors, dust-controlled, evenly lit and at a sensible temperature. Coating chemistry is unforgiving of dust landing in a wet layer, and it doesn't cure properly in the cold or the damp. So when you visit, look at the unit the way you'd look at a kitchen before eating there: is it tidy, is the floor swept, is there proper lighting to inspect the paint, is there space to walk all the way round the car?
We'll be honest about the kit, because the kit is where a lot of theatre creeps in. You'll see installers wave a paint-depth gauge and a bright inspection lamp around as part of the sales pitch. Those are genuinely useful tools in the right hands -- a depth gauge stops you polishing through thin lacquer, an inspection light shows up swirls that vanish under showroom lights -- but owning them proves nothing on its own, and a professional ceramic coating doesn't depend on any one gadget. A showy demonstration is not the same as a careful result. Plenty of meticulous workshops own no theatre at all.
A mistake we'll own
Honesty about process means being honest about getting it wrong, too. Early on, before the studio was set up the way it is now, Tom, our operations manager, coated a dark metallic bonnet on an afternoon when the unit was warmer than ideal. The coating flashed faster than expected and left a couple of high spots -- thin streaks where the product had started to set before it was levelled off. They were only really visible in raking light, but we saw them, so we machined the panel back and re-coated it properly the next day at our own cost.
We mention it for a reason. A coating going slightly wrong isn't the disaster; the disaster is the installer who can't see it, won't admit it, or hands the car back hoping you won't notice in the car park. When you're choosing a detailer, the right question isn't "do you ever make mistakes?" -- everyone does -- it's "what happens if something isn't right when I collect the car?" The answer tells you who you're dealing with.
The paperwork you should leave with
A proper job comes with proper documentation, and a detailer who works to a standard won't be shy about providing it. Before you book, get clear on the practical timings: the booking lead time, how many days the car will be away, and how soon after collection it can safely get wet -- coatings need time to finish curing on the car, not just to the touch.
When you collect, you should leave with these in hand:
- An itemised invoice showing what prep and correction was done, not just "ceramic coating".
- Written warranty terms, including what would invalidate the warranty.
- Plain-language aftercare: what to wash with, what to avoid, and how soon you can wash at all.
- Confirmation that the work is insured, so you're covered if anything goes wrong in their care.
On warranties, a word of realism. The strongest installers offer their own warranty on top of the coating manufacturer's cover -- we back our own application, which is the part within our control, separately from whatever the brand guarantees about the product. Be wary of any "lifetime" promise; the headline durability figures are marketing, and the cover that matters is the one with clear terms, a named installer behind it, and a realistic maintenance schedule attached. A warranty you can actually read beats a big number every time.
The quick checklist
If you only remember a handful of things when you walk into a unit or pick up the phone, make them these. Is the workshop clean, indoor and well lit? Is machine correction included in the price, and how much? Is it an honest all-in estimate rather than a tempting headline? Will the car stay overnight to cure rather than going out the same afternoon? Do you get an invoice, warranty terms and written aftercare? And does the conversation feel like an explanation rather than a performance? Get good answers to those, and you've found someone worth booking. Be wary of "lifetime" claims, bargain mobile jobs done on a driveway, and same-day turnarounds, because each of those is a corner being cut somewhere you can't see.