1. exterior covering
2. 0.625-in plywood sheathing
3. 3.5-in wood studs @ 16 in o.c.
   
4. 3.5-in vertical air spaces + mineral fiber batt insulation
5. 0.5-in gypsum wallboard

Wood Frame Walls with Optimum Value Engineering:

1. exterior covering
2. 0.5-in fiberboard sheathing
3. 5.5-in wood studs @ 24 in o.c.
   
4. 5.5-in mineral fiber batt insulation
5. 0.5-in gypsum wallboard

Structural Brick Walls:

1. 8-in common structural brick
2. (0-2)-in expanded polystyrene insulation
3. 0.75-in wood furring
4. 0.75-in vertical air spaces
5. 0.5-in gypsum wallboard

Concrete Block Walls:

1. exterior covering
2. 8-in concrete block
   
3. 5-in vertical air spaces
   
4. 0.75-in wood furring
5. 0.75-in vertical air spaces + fiberglass fill wall insulation
   
6. 0.5-in gypsum wallboard

Straw Bale Walls:

1. 1-in stucco finish
2. 23-in straw bale
3. 1-in stucco finish
   

Effective R-values:

The Home Energy Scoring Tool differs from Home Energy Saver Pro and Consumer in the wall types included.