In terms of insulation, what is the recommended R-value for exterior walls in North Carolina?

The recommended R-value for exterior walls in North Carolina is in the range of R-13 to R-20. This range is determined by the North Carolina Residential Code to provide adequate thermal resistance, which helps improve energy efficiency, maintain comfortable indoor temperatures, and reduce overall energy costs for heating and cooling.

In climates similar to that of North Carolina, achieving this R-value ensures that homes can effectively resist heat loss in the winter and heat gain in the summer. It supports energy conservation principles and helps meet the performance standards established for residential construction within the state.

Other ranges might not provide sufficient insulation in the context of North Carolina’s climate, which can lead to higher energy costs and discomfort in homes. The R-value serves as a critical measurement for building performance, and adhering to the recommended values is essential for compliance with code and for the energy efficiency of residential buildings.