The present invention relates to a caulking tool (1) comprising: an elongate body portion (10) having a longitudinal axis (A), a first opening (11) formed at a first inlet end (11'), the inlet end (11') further being configured for connection to a source of caulking material, a second opening (12) formed at a second outlet end (12'), and a tapering tubular portion (13) formed there between; a caulking vane component (20) comprising a caulking vane (20' ) connected to or connectable to said elongate body portion (10), wherein said vane (20') comprises a substantially straight front edge (21), and two side edges (22, 23) configured to extend from the outlet (12) to the straight front edge (21); wherein said vane (20) defines a plane (P), and is devoid of openings or holes, wherein said plane (P) forms an angle (V1) of 0-5° relative to said longitudinal axis (A) of the elongate body portion (10); wherein said plane (P) of said vane (20) is configured to be substantially flush with the outlet (12); wherein said straight front edge (21) extend to two sides of said outlet (12), and where said straight front edge (21) forms a second angle (V2) relative to said longitudinal axis (A) in the interval of 95-110°.