Chemical cleaning for aircon can be regarded as a category that falls between cleaning under high pressure and sandblasting. If sandblasting is not necessary, but high pressure cleaning is not sufficient, chemical cleaning may be the option.
However, please note: this is an aggressive method that can also damage the facade. Keep this option as a backup: you can usually consider this as an option if the facade is too dirty to clean with organic products.
How does this method work?
The product is applied to the facade surface with a brush or spray. The chemical reaction loosens the dirt. In most cases, the product has to work for a while (5 minutes to half an hour) and then the facade is hosed down with a high-pressure cleaner and water. Remnants will always remain on the facade, which is why the real result is only fully visible after a week.
It is important to have this product applied by a professional, as there is also a risk of damage. Usually this will also be tried on a small part of the facade first. Apart from the application, the quantity is also very important, it had to be carefully matched to the type of facade. After rinsing the facade, a special paste is usually applied. This absorbs certain salts.
The most commonly used products are ammonium hydrogen fluoride, hydrogen fluoride, hydrogen chloride (hydrochloric acid) and hydrogen phosphate (phosphoric acid).It is best you leave chemical cleaning aircon in the hands of the experts such as LK Brothers.
Benefits of chemical cleaning
The price is an important advantage here, partly because it is a fairly aggressive method. The lower cost price of the products also weighs on the total price tag.
Disadvantages of chemical cleaning
The biggest disadvantage is the environmental impact and the health of the person using the drug. Good protection is therefore certainly necessary.
Types of chemical cleaners
A distinction is made between acidic and basic cleaning agents:
The acidic variants: clean the facade by attacking the substrate. The dirt will then dissolve. There is a great risk of damage to the facade and therefore the facade is usually moistened in advance. These acidic cleaning agents attack silicon-containing materials (sandstone, brick and igneous rocks) and the glass and joinery. Improved acidic agents based on ommonium hydrogen fluoride can be used to clean architectural concrete.
Basic (alkaline) products: work through the saponification of fats, among other things. The products are not suitable for porous materials. They are best used on glazed stones.
Dry cleaning the facade of your home offers a solution when, for example, sandblasting under high pressure is not possible. When a classic cleaning under high pressure cannot achieve the desired result, chemical cleaning is usually the only really interesting alternative.
As a home owner, you should take into account that chemical cleaning is very aggressive. In the first instance, this will of course ensure that even the most stubborn dirt disappears, but in addition, the aggressiveness of the method ensures that your facade can be damaged. Partly for this reason, the chemical cleaning of the facade is still considered the last solution for really stubborn dirt.