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A9.4.1 Air Films
2021 Oregon Energy Efficiency Specialty Code (OEESC) > Normative Appendix A Rated R-Value of Insulation and Assembly U-factor, C-Factor, and F-Factor Determinations > A9 Determination of Alternate Assembly U-Factors, C-Factors, F-Factors, or Heat Capacities > A9.4 Calculation Procedures and Assumptions > A9.4.1 Air Films
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A9.4.1.1
Exterior surfaces are areas exposed to the wind.
A9.4.1.2
Semiexterior surfaces are protected surfaces that face attics, crawlspaces, and parking garages with natural or mechanical ventilation.
A9.4.1.3
Interior surfaces are surfaces within enclosed spaces.
Related Code Sections
A9.4.1 Normative Appendix A Rated R-Value of Insulation and Assembly U-factor, C-Factor, and F-Factor Determinations, Air Films
Prescribed R-values for air films shall be as follows: R-Value Condition 0.17 All exterior surfaces 0.46 All semiexterior ...
2021 Oregon Energy Efficiency Specialty Code (OEESC) > Normative Appendix A Rated R-Value of Insulation and Assembly U-factor, C-Factor, and F-Factor Determinations > A9 Determination of Alternate Assembly U-Factors, C-Factors, F-Factors, or Heat Capacities > A9.4 Calculation Procedures and Assumptions > A9.4.1 Air Films
A2.2.1 Normative Appendix A Rated R-Value of Insulation and Assembly U-factor, C-Factor, and F-Factor Determinations, General
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A3.3.1 Normative Appendix A Rated R-Value of Insulation and Assembly U-factor, C-Factor, and F-Factor Determinations, General
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