A filler for finishing architectural panel joints comprising masticized
tape having a preferential distribution of mastic along its working
surface. The preferential distribution of mastic facilitates finishing of
the architectural panel joints. The preferential distribution of mastic
may comprise the formation of a non-planar layer of mastic on the tape.
The distribution may further comprise a greater volume of mastic along
the edge portions of the tape than in the center portion of the tape, or
vice versa, or a greater portion in one region of the tape than in
another region of the tape. A tool is also provided comprising a
mechanism for dispensing masticized tape connected to a tool body. The
mechanism comprises a flow valve having a working surface suitable for
preferential distribution of the mastic onto the tape. The mechanism
further comprises mastic shrouds for containing the flow of mastic and a
sprocket cap.