With ultra-high pressure (hydro blasting) is a new concept for the preparation of painted surfaces, to be carried out in any type of service of anticorrosive maintenance, without the use of abrasive material (sand), meeting the requirements of environmental protection. It is important to note that by not generating solid particulate matter in suspension in the local atmosphere, plus the property of being applied with any high humidity condition of the air, the hydro blasting process can be performed in any rural or industrial region.