Install Instructions
IM-PR 566442 1114 (Design Manual)
10
Figure 1-8 U.S. climate zones
Source: U.S. Department of Energy
Climate Zone
Slab with Ground
Contact, Perimeter
Insulation
Slab or Floor in
Conditioned Space,
Horizontal Insulation
Slab or Floor over
Unconditioned Space,
Horizontal Insulation
Wall Cavity
R-Value
Exterior
Wall Cavity
R-Value
Interior
1
R-5.0, 24-inch depth
R-value that is 5 times
the value of the oor
covering’s R-value.
R-13
R-20 R-13
2
3
R-19
4 except Marine
R-15, 24-inch depth
5 and Marine 4
R-30
6
R-15, 48-inch depth
7-8 R-38
Table 1-2 Recommended R-values for residential new construction. It may not be feasible to attain these
values in existing construction. All installations should comply with local code.