Exterior · definition
The shingle-lapped sequencing of sill pan, jamb, and head flashing with the WRB so water always drains out and down, never into the wall.
Source: Building America Solution Center (DOE) — Fully Flashed Window and Door Openings
Where this term lands on a Columbus budget
The cost pages carry the current local ranges, and the guides explain what moves them. A published range becomes a project number only after someone looks at the site.