Insulation Zone Map (Adapted from Source Map at ENERGY STAR)
Recommended Insulation Levels
Recommended insulation levels for retrofitting existing wood-framed buildings in Ohio, West Virginia and Kentucky.
|Zone||Add Insulation to Attic||Floor|
|Uninsulated Attic||Existing 3-4 Inches of Insulation|
|Zone 4 (Yellow)||R38 to R60||R38||R25 to R30|
|Zone 5 (Green)||R49 to R60||R38 to R49||R25 to R30|
(Source: ENERGY STAR)