The invention relates, on the one hand, to a brush (1) for a scrubbing, sweeping and/or polishing machine for mechanical cleaning of several surfaces that are separated from each other by means of grooves and/or joints, such as, inter alia, paving stones, tiles, Bangkirai and/or building bricks, wherein the scrubbing, sweeping and/or polishing machine is provided so as to move the brush in a plane that is substantially parallel to the said surfaces that are separated from each other, and a scrubbing, sweeping and/or polishing machine provided with one or more brushes (1), the brush (1) being provided with at least one set of polishing bristles (2) for cleaning or polishing the surfaces; at least one set of joint bristles (3) for cleaning the grooves and/or joints between the surfaces; and the polishing bristles (2) having a length that is shorter than the length of the joint bristles (3). Additionally, the invention relates to a spraying device (10) for spraying several surfaces that are separated from each other by means of grooves and/or joints, such as, inter alia, paving stones, tiles, Bangkirai and/or building bricks, wherein the spraying device (10) comprises two or more spray heads (11), each of which produces a water jet (12).