We have operated on the Polish market since 1999, and on the global market for over 50 years. Our company specialises in conducting the cleaning work of stone, marble, sandstone, brick, concrete, wood, polychrome, gildings and other similar materials by means of a unique dry method known as Le Gommage® („erasing”). Le Gommage® technique was devised by THOMANN-HANRY®. Although we are specialised, we offer our customer a wide range of renovation services from proven companies, with which have cooperated for a number of years. Our additional asset is the fact that cleaning the elevation of the building can be a separate undertaking, carried out independently from the planned renovation work. TheLe Gommage® technique has been acknowledged by
- professor Ireneusz Płuski from Art Academy in Krakow,
- dr. Jadwiga Łukaszewicz from Toruń University,
and numerous publications: RENOWACJE I ZABYTKI 3/2004, NOWY KAMIENIARZ 1/2005, muratorPLUS – 1999, RENOWACJE 1999, a Polish national building fortnightly PROFILE 16/2002, Business Centre Club 11/2002 and the majority of local press. awards: ZYGMUNT BELL – the 3rd Building and Works of Art Renovation Fair 2000 in Krakow EUROPEAN MEDAL for a cleaning technique – Business Centre Club 2003 HONOURABLE MENTION – at International Pomerania and Kujawy Fair CONSERVATIO 2000 Recommendations: Business Centre Club 2003, the Mayor of Bydgoszcz 2002, the President of Bydgoszcz University, Zamek Cultural Centre in Poznań 2002 and 2005, Seminary inWłocławek 2004, Sts Peter and Paul the Apostles Church in Bydgoszcz 2005. Vice-President of Thomann-Hanry Polska Bogdan Maciejowski Le Gommage De Façades Method – erasing This type of method is employed by the Thomann Hanry company – its author – to clean buildings all over the world. It is colloquially known as „erasing”. The method is based on direct spraying on the elevation of a dry fine powder – of vegetable or mineral origin – consisting of very tiny grains, at a low pressure (0.88-2.94 bar). Grains weigh and measure very little 100-50ľ, and in some particular cases even 20ľ (classic sand-blast cleaning requires grains of 400ľ). The diameter of grains in the powder depends on the variety and extent of dirt on the surface. This is what clearly differentiates the classic cleaning method of elevations from this method. The cleaning takes place as a result of gentle grinding. The grains are of very small weight and they are sprayed at a low pressure, thus they hit the surface without excessive force, smoothening it gently. The stream of compressed air splits when it encounters an obstacle together with most of the powder grains in it. The grain diameter is selected after a building or an element to be cleaned has been examined. The method is safe for surfaces and quick, no use of water or detergents is needed. It is so gentle a method that one can even clean murals by means of it. The entire cleaning process with this method is dry, which excludes the risk of water or harmful substances (from dirt) being soaked up. Compressed air spreads over the surface and the grains follow the stream. This action leads to the „erasing” motion which cleans the surface without directly affecting the surface. Since the powder is fine-grained, the facade as well as the calcified stone (a natural protective layer) remain intact. Powders used for the cleaning process are not harmful for the surface and the environment. As the elevation remains dry, the moisture and acid compounds from the dirt are not absorbed by the surface and do not cause its damage. Powder can be used only once. In order to avoid putting up a scaffolding, a working cabin has been constructed – it moves o-n a telescopic arm of a self-propelled elevator. The platform is equipped with vacuum cleaners to suck off the powder and dust from cleaning. The moment dust is collected by the vacuum cleaners it is immediately moistened with water. Sucking resulting from underpressure forces the cabin to the surface, sucking in air through side holes at the same time. The operator, in accordance with industrial safety requirements, is provided with spotlessly clean working conditions. This innovation protects both the users of the building as well as the environment. The arm is movable and can be adjusted freely. In this way a 200-m2 elevation space can be cleaned daily. The cabin can be raised to the height of 42 metres. When cleaning taller elevations, the cleaning platform is attached to ropes underslung to arms whichare in turn fixed to the roof of the building. In individual cases, cleaning can be done from appropriately covered standing scaffoldings.