Inverted Wall System
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Assembly:
| Component | Manufacturer | Product |  |
| 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. | |||
Assembly Performance:
(proposed clear wall U-Factors are approximately 8% | 33% better than code and have 92% | 79% thermal effectiveness)
Clear Wall | Code Minimum | Proposed |
| 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. | ||