A simple straight vertical stitch worked as a zigzag in horizontal bands. Each stitch is offset from its neighbour hence the name brick stitch.
The term brick stitch has been used historically to refer to various offset stitches, including the method of couching called bricking, and so doesn’t necessarily refer to this counted thread stitch.
Brick stitch is one of the core stitches in Chinese embroidery, normally executed in silk on gauze fabric . It is also used in Kohistan to embroider patterns of diamond and zigzags.
This simple stitch is worked as a zigzag in horizontal bands. Make a vertical stitch over two threads of the canvas. Next to it work an identical size stitch one thread down to offset it with the first and continue
Work back along the band ensuring that each stitch touches the stitches in the previous band by interlocking the stitches with the band above
Structure of stitch
Letitia Higgin, RSN Handbook of Embroidery (1880) , p.41–2
S. F. A. Caulfield, Blanche C. Saward, The Dictionary of Needlework (1882) , p.178
Mary Thomas’s Dictionary of Embroidery Stitches (1934) , p.15
Sheila Paine, Embroidered Textiles - Traditional Patterns from Five Continents (1990) , p.20, p26