A station for applying fluid substances to stone materials, comprising a support surface for supporting a stone slab and an applicator for applying the fluid substance to the slab, wherein said applicator comprises a distribution roller suitable to press the slab and to move on it in order to distribute the fluid substance over the slab, an automated moving device being provided for moving said applicator, to allow the automated distribution of the fluid substance, wherein said applicator comprises a pressing member (29, 129) to press the roller against the slab, and a pressure adjusting device for regulating the pressure of the roller on the slab, wherein said applicator comprises a support (27, 28), to which said roller is hinged, in order to allow the rotation thereof on the slab, said pressing member comprising at least one actuator (29, 129) suitable to generate a force onto said support (27, 28) so as to transmit the force to the roller and to generate a pressure of the roller on the slab, said pressure adjusting device for regulating the roller pressure on the slab being suitable to act by adjusting the force of said at least one actuator (29, 129) acting on said support (27, 28), wherein said actuator is a rotation actuator (29, 129) of the pneumatic type and comprises an adjusting device for regulating the actuation pressure for the compressed air in inner chambers of the actuator, wherein by setting a compressed air value in the chambers of the actuator, and keeping it constant during the resin finishing, the pressure of the roller on the slab will be substantially constant, said actuator further comprising a rotating member defining a power output of the rotation actuator for applying a torque; said support (27, 28) comprising at least one support body, to which said roller is hinged, said support body being fixed to said rotating member so that the application of a torque to said rotating member by means of the actuator tends to drive said support member (27, 28) and said roller into rotation around the axis of the rotating member, in such a way that, with said roller arranged into contact with the slab and said support body inclined, the direction of the torque applied to said member in the direction of movement of said roller towards the slab causes an increase in the pressure of the roller on the slab, while a decrease in the torque in said direction causes a decrease in the pressure between roller and slab, wherein said applicator comprises at least one nozzle from which the fluid substance exits for being deposited on the slab, the nozzle being associated with a supplying system for supplying the fluid substance. wherein said applicator comprises a pressing member (29, 129) to press the roller against the slab, and a pressure adjusting device for regulating the pressure of the roller on the slab, wherein said applicator comprises a support (27, 28), to which said roller is hinged, in order to allow the rotation thereof on the slab, said pressing member comprising at least one actuator (29, 129) suitable to generate a force onto said support (27, 28) so as to transmit the force to the roller and to generate a pressure of the roller on the slab, said pressure adjusting device for regulating the roller pressure on the slab being suitable to act by adjusting the force of said at least one actuator (29, 129) acting on said support (27, 28), wherein said actuator is a rotation actuator (29, 129) of the pneumatic type and comprises an adjusting device for regulating the actuation pressure for the compressed air in inner chambers of the actuator, wherein by setting a compressed air value in the chambers of the actuator, and keeping it constant during the resin finishing, the pressure of the roller on the slab will be substantially constant, said actuator further comprising a rotating member defining a power output of the rotation actuator for applying a torque; said support (27, 28) comprising at least one support body, to which said roller is hinged, said support body being fixed to said rotating member so that the application of a torque to said rotating member by means of the actuator tends to drive said support member (27, 28) and said roller into rotation around the axis of the rotating member, in such a way that, with said roller arranged into contact with the slab and said support body inclined, the direction of the torque applied to said member in the direction of movement of said roller towards the slab causes an increase in the pressure of the roller on the slab, while a decrease in the torque in said direction causes a decrease in the pressure between roller and slab, wherein said applicator comprises at least one nozzle from which the fluid substance exits for being deposited on the slab, the nozzle being associated with a supplying system for supplying the fluid substance.