This masonry technique shapes a mortar joint by pressing the tool inward at the bottom edge, forcing the mortar to slope downward and outward from the brick above. It creates a weather-struck profile that sheds water efficiently away from the masonry face. The finished joint leaves the top edge recessed and the bottom edge flush with the brickwork.
Heard on the job
Make sure you downstrike those bed joints so the rain doesn't pool on the lower bricks.