Exterior · definition
Rigid foam over the sheathing, under the siding, that breaks thermal bridging through studs. Increasingly code-relevant and added during re-siding.
Source: DOE Building America Solution Center — Continuous Rigid Insulation Sheathing/Siding
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.