Blade holder for creping of a web travelling on a rotating cylinder (2) or for doctoring the surface of the cylinder, comprising a blade (3) directed opposite to the travelling direction of the cylinder (2), a blade carrier (41) for the blade, further comprising a pressure ledge (13) extending along the whole length of the blade and arranged to exert a pressure at or adjacent to the upper longitudinal edge of the blade (3) via pivotable pressure arms (15) evenly distributed along the length of the ledge and arranged on the blade carrier (41) to bring said edge to engagement against the cylinder (2). Each pressure arm (15) is arranged to be individually actuated by a pressure means having a double folded membrane (35) for actuation of the pressure arm (15) by means of a pressure medium.