4.01 Attics 4.0101 Exterior Roof Insulation 4.0102 Interior Roof Insulation 4.0103 Attic Floors - Unconditioned Attics 4.0104 Attic Knee Walls 4.0188 Unique Installations 4.02 Walls 4.0201 Accessible Walls 4.0202 Enclosed Walls 4.03 Floors 4.0301 Accessible Floors 4.0302 Exposed Floors 4.0388 Unique Installations 4.04 Conditioned Subspaces 4.0401 Rim/Band Joist 4.0402 Walls 4.0403 Slabs Hierarchy Insulation
