Laser stone cleaning or laser blasting is very suitable for removing all types of impurities on stone. The laser beams will quickly heat the paint layer, which will then evaporate. The lower stone or concrete layer remains cool due to its higher ablation temperature. Therefore, the laser beams will not have any effect on the stone or plaster layer below. After treatment, the stone remains as clean as if it had just been laid!
Laser stone cleaning enables the removal of undesirable layers, most often sulfation, while preserving the oxalate films – patina – that are between the substrate and the deposits. The principle of its operation is basically very simple: laser beams of a certain frequency react to the dark color of the dirt, create resonance in it and turn it into fine dust. While impurities are present on the stone, light is absorbed, and cleaning continues. When the impurity is removed, the light is reflected on the clean surface of the stone, and cleaning stops. It is possible to clean black crust and patina of even several cm!
