Exterior · definition
The primer-plus-topcoat regimen matched to the substrate. Proper prep and product selection determine whether siding holds paint 5 or 15 years.
Source: Sherwin-Williams — Exterior Paint & Coatings
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.