North Dakota Building Climate Zone
North Dakota is very cold to subarctic, commonly Zone 6 or 7. State-level climate-zone pages are planning baselines; IECC climate zones are county based.
Planning baseline
- IECC climate zone: Zone 7A
- Climate type: Subarctic
- Wall planning target: R-20 + R-5 continuous insulation or R-13 + R-10 continuous insulation
- Attic planning target: R-60
- Floor planning target: R-38