Abstract: A roller brush for sweeping machines includes an axle (1) which carries distance members (2, 3) which in turn carry profile bars (4) which are arranged along a circumference of the roller brush. The profile bars (4) in turn carry bristle bars (6) provided with bristle members (6.1) which are arranged to protrude mainly radially from the roller brush. One or more cover bars (5) are arranged between adjacent profile bars (4) along the circumference. The cover bars (5) are preferably developed with equal width along the circumference of the roller brush whereby the profile bars (4) are spaced at equal relative distance along the circumference.