653 Floor Insulation (Extreme Climate)
Typically, floor insulation is found under raised subfloors and in the floor
structure above unheated basements. It is not found under slabs, and typically
not found in the floor structure above heated basements. Use this component to
enter the area of the subfloor with R-22 floor insulation (7" fiberglass batt
or blanket), typical of an extreme climate.
Use the following map as a guide to the climate zones in the United States:
Climate Zones: Mild Moderate Extreme