Clean plastered facades – to preserve the value of your building

Before starting the cleaning of the facade, the specialized company in charge will plan the project in detail. For example, check if your… The building is a historic building and which legal provisions apply. Specific contamination is checked and it is recorded whether, for example, graffiti needs to be removed. Any damage such as cracks or salt damage, you should arrange before cleaning allow.

Furthermore, it applies To clarify the problems of disposing of the resulting dirty water. Disposal is regulated differently from municipality to municipality. Under no circumstances should wastewater enter the ground in an uncontrolled manner. The preparation also requires meticulousness Covering of openings and turning off electrical systems. Cleaning is always done from top to bottom and vice versa when using cleaning products. For very absorbent surfaces, so-called pre-wetting is necessary.

The right method for cleaning facades

The most important step in planning: finding the right one for cleaning plaster among many different methods. Why no facade is the same as another – Clinker reacts differently than aerated concrete. That is why the specialist always first determines the state of the surface. It clarifies what material and what stone was used to build the house how the facade accepts and absorbs detergents.

Around the Check the reaction of the facade material to different water pressures, temperatures and chemicalsa preliminary test is always necessary. The type of facade, i.e. whether it is a solid façade or a curtain wall, is also crucial when choosing cleaning methods.

High pressure cleaning

High-pressure cleaning is not the most gentle cleaning technique for plastered facades. This is usually the case hot water with or without the addition of wetting agents applied with great pressure. Short-term procedures reduce the risk of the facade becoming damp, but loose parts of the facade can still crumble.

However, this type of facade cleaning is the most tested and widespread and is suitable for all types of cleaning: from Graffiti removal, moss removal and Preparation of painting for a new painting of the facade.

High pressure cleaning

High pressure cleaning is even more brutal: with a Operating pressure of 800-1200 bar and 100-350 liters of water per minute Facade cleaners work with this method. In any case the dirt will be completely removed.

Since this technology almost always leads to loss of substance and requires enormous amounts of water, it is used less frequently in building cleaning.

Sandblasting process

So is the process of sandblasting or shot blasting, in which sandblasters are used often leaves visible tracesi.e. abrasion, on your building. But this method can also be carried out at low pressurewhich makes it more delicate.

Cleaning chemicals

Chemical processes are used there, where cleaning with water is not possible due to the type and degree of contamination AND. Acids or alkalis are used. Acids remove almost all contamination, such as

Rost
Cement veil
Efflorescence
Corrosion products
Algae
Moos
Fett
Oil.

Alkalis clean acid-sensitive rocks such as limestone, travertine or limestone.

Cleaning with a steam jet

Steam jet cleaning is one of them good alternative to cleaning with a water jet. Here cleaning takes place with minimal use of water and without pressure. THE Brushes, sprayers and suction devices improve the cleaning effect, which are only used by hand and are therefore very delicate.

Clean facade with ETICS

If your home is equipped with a composite thermal insulation system (ETICS), extreme caution is required. These are susceptible to algae and moss infestations and tend to form mold, but one aggressive cleaning would cause them serious damage.

It is best to keep too much water pressure and water vapor away from these facades. Instead, use soft brushes for cleaning and soapy water or a common algae remover, or have it cleaned by a professional.