A joint density assembly adapted for use on a screed. The preferred joint density assembly comprises an endgate having a vertical axis. The preferred endgate comprises a frame adapted to be mounted to the screed, a mounting means adapted to mount the frame to the screed, a pivoting shoe adapted to be pivotally adjusted, and a means for adjusting the pivoting shoe which is adapted to move the pivoting shoe between a retracted position and an extended position. The preferred pivoting shoe is adapted to pivot about the vertical axis of the endgate. A method for increasing the density of an asphalt longitudinal joint comprising providing a joint density assembly and adjusting the pivoting shoe.