|Interior Finish (vapor permeable)||-||-|
|Interior Gypsum Board||-||Type X|
|Metal Stud (18 GA. Min. @16” O.C.)||-||-|
|Stud Cavity Insulation (Optional)*||-||Fiberglass Batt|
|Continuous Insulation*||Dow||2 1/2" Styrofoam Ultra XPS|
|Exterior Gypsum Sheathing||-||Type X|
|Self Adhered Air/Water/Vapor Barrier*||Carlisle||Barritech VP|
|Cladding Attachment System||Knight Wall||HCI 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.
** Note that specific conditions are required at the head detail of fenestration openings to maintain NFPA 285 compliance.
(proposed clear wall U-Factors are approximately 8% | 33% better than code and have 92% | 79% thermal effectiveness)
|Design R-Value: a||R-13 + R-7.5ci||R-14ci | R-19 + R-14ci|
|Total R-Value:||N/A||R-18.66 | R-36.60|
|Effective R-Value:c||N/A||R-17.08 | R-28.75|
|Design U-Factor: a, b||U-0.064||U-0.059 | U-0.043|
|Effective U-Factor: c||N/A||U-0.059 | U-0.035|
|Assembly Air Permeability||0.04 cfm/ft2 @75Pa||0.0024 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.