In some cases in residential buildings, apartment buildings, commercial or industrial buildings, it is quicker and more economical to carry out basic washing and then to spray onto the surfaces a special paint with very good covering properties which prevents soot from re-emerging. This technique enables premises to be restored very quickly to a clean state and impeccable aesthetic appearance.
Peeling is a cleaning process which is applied to any non-friable surface. This is a dry cleaning process. It consists of the application of a natural latex paste with a brush, or spray apparatus, onto the surfaces to be treated. This produces a continuous film, which, when dry, becomes a skin that can be removed by hand.
These products enable the lasting encapsulation of soot and dust on all media, particularly in places that are hard to access (ventilation, or air-conditioning shafts, ducts, etc…). They also enable the binding of soot to materials that cannot be washed (glass wool, fibre glass, the upper sides of suspended ceiling tiles, etc…). This type of product is indispensable when treating the interior of shafts, to avoid the discharge of soot and chlorides when the various installations are restarted.
Cryogenic cleaning is a gentle, non-abrasive cleaning system. Dry ice (CO2) is used in the form of pellets (tiny cylinders). These pellets are projected with a very high velocity compressed air gun. On impact the pellets explode on the contaminated surface (dry ice absorbs 700 times its own volume before disintegrating in a vapour). This is an eco-friendly procedure as no chemical products are used, with no water or abrasives, and the system does not generate any secondary waste.
The ultrasound tank is a stainless steel tank which is filled with a solution (water and detergent, solvent). Ultrasound waves are triggered in the solution. They alternately cause compression and decompression phases. During decompression minuscule bubbles are formed (cavitation). During the pressure phase, these bubbles implode on contact with the items in the solution. This dislodges the dirt.