West Virginia Building Climate Zone
West Virginia spans mixed humid Zone 4 and cold Zone 5. State-level climate-zone pages are planning baselines; IECC climate zones are county based.
Planning baseline
- IECC climate zone: Zone 5A
- Climate type: Cold
- 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-30