Exterior · definition
A synthetic WRB sheet (e.g., Tyvek) lapped shingle-style and taped, integrated with window/door flashing to keep bulk water out of the wall.
Source: DuPont — Tyvek HomeWrap
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.