|Interior Finish (vapor permeable)||-||-|
|Interior Gypsum Board (Type X)||-||-|
|Metal Stud (18 GA. Min. @16” O.C.)||-||-|
|Stud Cavity Insulation (Optional)*||Dow||2" Styrofoam SPF CM-2045|
|Continuous Insulation*||Dow||2" Thermax XArmor|
|Cladding Attachment System||Knight Wall||CI System|
|Rainscreen Cladding*||-||NFPA 285 Compliant|
* Product recommendations are based on Type I-IV construction requiring NFPA 285 assembly acceptance criteria compliance per IBC 2015 Sections 1403.5 & 2603.5.
(proposed clear wall U-Factors are approximately 2% | 25% better than code and have 91% | 80% thermal effectiveness)
|Design R-Value: a||R-13 + R-7.5ci||R-13ci | R-12.8 + R-13ci|
|Total R-Value:||N/A||R-17.09 | R-29.86|
|Effective R-Value:c||N/A||R-15.56 | R-23.88|
|Design U-Factor: a, b||U-0.064||U-0.063 | U-0.048|
|Effective U-Factor: c||N/A||U-0.064 | U-0.042|
|Assembly Air Permeability||0.04 cfm/ft2 @75Pa||0.01 cfm/ft2 @75Pa|
a Clear wall meets energy code thermal requirements without stud cavity insulation.
b Clear wall U-Factor is based on the stud size & spacing noted above and is calculated per IECC 2015 & ASHRAE 90.1-2013 Appendix A.
c Clear wall effective thermal performance is based on the stud size & spacing noted above, manufacturer literature and industry studies on the thermal performance of facades.