Exterior · definition
The walking-surface boards fastened across the joists — wood, composite, PVC, or aluminum. The most-visible and most-replaced deck component.
Source: TimberTech — Decking Overview: Composite, PVC & Wood
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.