The carwash
Written by: Vinnie van Rooij
Although carwashes are very popular, they are not the place where detailers are found. There is a reason why detailers don’t like a carwash. The art called detailing/valeting is very different to the service that is offered by a carwash.
Contents
What is a carwash
A carwash is a company where you can pay to either get your vehicle washed in a big drive-through automatic carwash, or to do it by hand by using their pressure cleaner with the option to use a lance or a brush. The lance can be used with soap, rinse water, osmose-water, hot-wax and sometimes a special cleaner for wheels. The brush can be used with a soapy solution that comes out through the brush itself.
The automatic drive-through machine has large round brushes that rotate and are moved along the surface of the car, it also rinses the car and blow-dries the car.
The problem with the carwash

The products used
The products used by a carwash have to be economic. A product that cleans well, but doesn’t cost to much money. It has to be effective and cheap. While trying to achieve this, most manufacturers don’t focus on the long term effects that a product might have. They are designing a product that cleans well right now, and is cheap enough to use. Wether the product has any long term negative effect on the vehicle is not really considered, as long as it doesn’t cause extreme damage.
The brush
The brush that is used in the “do-it-yourself” box contains hard hairs, lies on the floor a lot, is used to scrub off all kinds of dirt (that gets trapped in the hairs). This means that the hairs are full of dirt, sand, grit and other types of particles with rough edges. Moving this over the surface of your car will cause surface imperfections. The type of stuff you usually try to get out when you are polishing, and what you try to prevent when using the 2-bucket method.
The cleaning solution
Although many products in the world of detailing are developed and fine-tuned to be wax-safe, but still hard on dirt, grime and other contamination, the products used at the carwash isn’t developed and fine-tuned like this. The product you will be using there is made to be cost effective. It will clean enough to satisfy the average car owner, but won’t remove stubborn contamination. There is also a big chance that it will interfere with the protective product on your car.
The hotwax
Many people will think that applying any form of wax will help to protect the paint on your vehicle. However, this is not the case. The solution used in a carwash is a very watery emulsion of wax, some oils and water. The contents of wax and oils are enough to give very simple and mediocre beading, but not enough to actually have a serious effect on contamination. It would also have to be applied very regularly to maintain the strength of the protection. It is enough for the average car owner, who doesn’t really care for a squeaky clean car, but not enough for the high demands of a detailer.
The big round brushes
Inside the automatic carwash device, there are big round brushes that spin and move along the surface of the vehicle. While doing so, they brush off the dirt. Because of the spinning motion, the flaps of these brushes are slapped on the surface, and then dragged over it. Every car that has come through before yours will leave some dirt on those flaps. Basically, you are slapping a dirty flap of cloth on your vehicle, and drag it over the surface. This will cause surface imperfections in the form of long, straight scratches.
Why it works for the average car-owner
Although detailers are very proud of the work they do, and how their finished projects look like, most car-owners don’t care that much about their car. They want it to look clean, but they are not willing to spent more money on a little bit better effect. A detailer is willing to spent 5 times the money on a shampoo that gives 2 times the results of a cheap shampoo. The average car-owner wants their car looking great for peanuts. The carwash offers this. The few car-owners that don’t just want the clean-ish look eventually end up in the world of detailing.
The only good thing about a carwash for a detailer
Although there are many things at a carwash that makes a detailer have nightmares, it does offer good services as well.
- Many carwashes have a vaccuum-cleaner, which is safe to use to clean your interior (as long as you prevent the hose from rubbing over the edge of the door frame).
- The lance can also safely be used to just rinse off the vehicle without using the brush or the cleaning solution. This can be done more safely when you choose for osmose-water and leave the lance running for 10 seconds, to flush out any cleaning agents left in the hose.
- At some places they even offer compressed air to inflate the tyres and several trash cans to through away the rubbish in your car.
The 100% scratch free carwash
A 100% scratch free carwash that uses any automatic devices are not 100% scratch free. It would only be possible to be 100% scratch free when they would use clean water for every vehicle, rinse out the washmitt after every panel, pre-soak the dirt with a snowfoam-like product and rinse thoroughly before drying with air and MF towels. Since this costs money, products, staff and extra usage of water, this is not economical. And would cost way to much money. The normal carwash cannot be 100% scratch free. Most of the times, this slogan is just a marketing-trick. The idea is that you think that the machine itself is 100% scratch free, however, the only thing that is actually scratch free, is the Do It Yourself box if you only use the lance the rinse off the dirt (and if you use it in the proper way).
So yes, it can be scratch free, if you only use a certain tool, and do it in the correct way. Any other way of washing your car at the carwash is not covered by the 100% scratch free claim.
Different related articles
There are a few different kinds of machine polishers on the market, these are designed with different strengths and weaknesses. Knowing what machine suits which job the best can help to make the job easier or achieve better results....
A surface imperfection is an unwanted difference in depth, height or structure to the surrounding area. For example: a scratch, which is basically a sudden difference in depth with an edge that has an angle that is very different to the one of the surrounding area....
Bufffiber is a Dutch car detailing accessories brand. The company was launched in 2017, after a year of internal product development the first products were launched to the general public in the fourth quarter of 2018. At this moment Bufffiber specializes exclusively on high-end Korean microfiber car detailing products, with an intention to expand its product selection in 2019/2020....
Shurhold is an American manufacturer of detailing products and car care related products. The brand doesn't focus on just cars, but also boats, RV's and caravans. It is one of a few brands that offers products, machines and tools under 1 name....
There are 2 general ways for deep cleaning fabric. Using a vacuum cleaner (just removing surface dirt), or using a wet/dry vacuum cleaner (deep clean the fabric). When you deep clean fabric, you need to take into account that you will spent a lot more time on it....
Dried up polish can be very unattractive. It is also a hardened substance that can cause surface damage when rubbed over the paintwork. Although the detailer should have removed this, it can be encountered on some jobs. Dried up wax residue can generally be approached in the same way....

[…] je meer lezen of leren over de wasstraat? Lees dan dit handige artikel op DetailingWiki nog even […]