Additional information about ASHRAE 90.1-07
An electronic version of The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) 90.1-07 can be viewed using RealRead Viewer by clicking here.
Figure 1: Climate Zones for U.S. locations from Figure B-1 of ASHRAE 90.1-07
Click on the images below to view ASHRAE's tables of its R-value requirements for specific climate zones in their entirety.
Table 1: Comparison of minimum thermal insulation requirements from prescriptive building envelope option of ASHRAE 90.1-04 (and previous editions) and ASHRAE 90.1-07
Table 2: Minimum thermal insulation requirements for high albedo roof systems per Table 22.214.171.124 in ASHRAE 90.1-07
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