Apart from the certificate there is nowhere on the car to say that it has been treated?
Quick answer: No -- there isn't. We don't put stickers on the car. Earlier sealant stickers were unpopular and our current ceramic coating brands don't supply them. We keep a record and the guarantee is transferable -- the car's registration is all we need.
The question comes up fairly often, usually from customers who want some visible proof on the car -- something to point to when they sell it, or to reassure themselves that the treatment is really there. It's a reasonable thing to wonder. The honest answer is that there's nothing on the paintwork itself that marks it out, and the certificate is the only physical document the job produces.
Where the sticker idea came from
A generation of dealership paint protection products -- Supagard, Diamondbrite and their equivalents -- came with window stickers as standard. The idea was partly proof, partly marketing: a small decal in the corner of a side window telling anyone who looked that the car had been treated. In practice most customers disliked them. The sticker was obviously an advert for the supplier, not a neutral proof mark, and plenty of people quietly peeled them off within a few weeks of collection.
Those products were also sold heavily at point of sale by dealership finance managers, often on cars that hadn't been properly prepared before the sealant went on. The sticker became associated with that whole category of product -- overpriced, under-delivered, applied to dirty paint -- which didn't help its reputation. By the time professional ceramic coatings arrived as a distinct segment, the sticker convention had already fallen out of favour.
What the professional coating brands supply instead
None of the brands we currently work with -- Fireball, Matrix and others -- include physical stickers as part of their warranty package. Some brands have moved to digital registration instead: a QR code or a short URL where the application can be logged against the vehicle's registration number. That record is held by the brand rather than printed on a piece of paper, and it means the warranty can be looked up by anyone -- a future owner, a dealer, an insurance assessor -- without needing to locate a paper certificate.
Our own records work in the same way. Every car we coat is logged with the registration, the product applied, the batch reference and the date. If a customer loses their certificate, we can reissue the details from our records. If the car changes hands, the new owner contacts us with the registration and we can confirm what was done and when. The certificate matters mainly as a prompt -- it tells the customer what they've had done and reminds them of the maintenance schedule. The underlying record is ours.
Can you tell a coated car by looking at it?
To an untrained eye, a freshly coated car and a freshly polished car look similar -- both will be clean, glossy and free of surface marks. The difference shows up over time and under specific lighting conditions. A ceramic coating changes the surface tension of the paint, which affects how water behaves: it sheets and beads differently from an uncoated surface, and the effect is immediately visible when it rains or the car is rinsed. Dirt release is also noticeably easier on a coated car.
None of that is something you can communicate with a sticker. The coating either performs or it doesn't, and anyone who understands what to look for can assess it without documentation. That said, most customers aren't detailers, and for a private sale -- where the buyer is trying to assess a car they've never seen before -- the certificate and the workshop record together carry more weight than a sticker ever did.
The door-shut sticker idea
We did discuss, at one point, producing our own small labels for the door shuts -- the painted inner lip of the door frame that's only visible when the door is open. It's a common location for workshop stickers in the service industry; out of sight in normal use, easy to find if you're looking for it. Tom, our operations manager, priced it up and the demand simply wasn't there. Most customers we asked said they'd prefer the clean look. A few said they'd find it useful at resale. Not enough to justify a print run, and not something we've revisited since.
The irony is that the cars most likely to command a premium at resale on the strength of their condition are the cars where the coating is most visible in the paint depth and the finish -- and any buyer paying attention to those things will understand what they're looking at without needing a label to confirm it.
Transferability and resale value
The practical question behind most requests for visible proof is resale: will the coating add value when the car is sold, and can that value be demonstrated to a buyer?
The short answer is yes, and the mechanism is the transferable guarantee. Transferable guarantees mean the new owner inherits the remaining term of the warranty along with the car. That's a concrete, documentable benefit -- not just a claim about the paint looking good. When a seller can hand over a certificate with a remaining warranty period and direct the buyer to a workshop that holds the service record, the coating becomes a verifiable asset rather than an unsubstantiated claim.
For that to work, the certificate needs to travel with the car. We recommend keeping it with the service history -- the same place a buyer will look for MOT certificates and service stamps. If it ends up in a drawer at home and stays there when the car is sold, the transferability benefit is lost even though the coating itself remains on the paint.
The registration number is all we need to pull up the record on our end. So if a certificate is mislaid before a sale, contact us beforehand and we can confirm the details in writing -- which is arguably more useful to a buyer than a sticker anyway.
What the certificate actually contains
Our warranty certificates list the vehicle registration, the coating product and tier applied, the date of application and the warranty term. The name of the registered keeper at the time is included, along with the transferability terms. Some brands also include care guidance on the reverse -- what products to avoid, how soon to wash the car after application, whether a top-up maintenance product is recommended.
That last point matters more than it might seem. Ceramic coatings do need maintenance -- not heavy work, but the right wash technique and, depending on the product, an annual inspection or top-up. A certificate that includes the maintenance requirements is a prompt to do the right thing; a certificate that just says "five year warranty" without guidance sets expectations without supporting them. We try to make sure customers leave with something they can actually use.