Establish Vertical Spraying Direction

What happens here

Begin by spraying the surface from top to bottom, following the vertical grain of the siding. This ensures that the paint aligns with the natural texture of the material. Avoid spraying horizontally or across the grain, as this can create an unnatural or streaky finish. For initial passes on lower sections, use a shield to prevent overspray onto footings or other ground surfaces.

Goal: The presenter emphasizes spraying in the direction of the material's grain (vertically for siding) and avoiding horizontal passes to maintain a natural appearance and prevent issues.