Abstract: A method for applying a coating to a surface includes providing a sprayable liquid binding agent formed of first and second components, pumping the first and second components of the binding agent to a first dispensing device and combining the first and second components in the first dispensing device to form the binding agent. The method further includes spraying the binding agent from the first dispensing device on to a surface to be coated, providing a particulate medium, and spraying the particulate medium from a second dispensing device into the liquid spray of binding agent produced by the first dispensing device. The binding agent may coat the particulate medium and adhere it to the surface to form a coating thereon. An apparatus for performing the method is also described.