The material to be applied shall be stacked on a level surface with a maximum of 2 pallets on top of each other until the end of the installation process, and shall be covered with a waterproof material that provides adequate ventilation. The contractor shall ensure that the material stored at the construction site is protected from various damages, dust, dirt, chemicals, and other harmful substances. Damaged and defective materials shall be replaced by the contractor at no additional cost to the employer. Before the flooring coating is manufactured, the existing concrete floor surface will be swept and then cleaned by washing with pressurized water washing machines, and a minimum 3 cm thick leveling layer (1m³ washed and screened sand + 500kg cement + 0.290m³ water) will be spread on top. After the leveling layer manufacturing process is completed, the surface will be cleaned again to remove dust, dirt, etc. During the terrazzo tile application process and for 48 hours after application, the ambient temperature must not fall below +5º C.