MCM with Semi-Rigid Mineral Wool Insulation and Metal Stud Back-up
2021 IBC, IECC + MA Stretch Energy Code
Revised: August 2025
Featured Manufacturers
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Assembly Performance:
| Semi-Rigid Continuous Insulation – IECC 2021 + MA Stretch Energy Code (Climate Zone 5, All Other Use) | ||||||
| Code(IECC 2021 + MA Stretch*) | ProposedBase | ProposedOptimized | ||||
| R-Value | U-Factor | R-Value | U-Factor | R-Value | U-Factor | |
| Roofs | ||||||
| Insulation Entirely Above Roof Deck | R-30ci | U-0.032 | R-30ci | U-0.032 | R-45ci | U-0.022 |
| Walls Above Grade | ||||||
| Metal Framed | R-13+R-10ci | U-0.055 | R-19.4ci | U-0.053** | R-19+R-19.4ci | U-0.036** |
| Slab-On-Grade Floors | ||||||
| Unheated Slabs | R-15ci | F-0.52 | R-15ci | F-0.52 | R-15ci | F-0.52 |
| Vertical Fenestration | ||||||
| Fixed | NA | U-0.36 |U-0.30* | NA | U-0.29 | NA | U-0.24 |
| Operable | NA | U-0.45 |U-0.32* | NA | U-0.30 | NA | U-0.30 |
| * MA specific requirement.** U-Factor includes clear field thermal derating as required by IECC 2021 Section C402.1.3. and MA Stretch Energy Code Section C402.7. | ||||||
| Details | Analysis | ||||
 | SK-01 | Typical Wall Plan & Section |  | Dew Point Analysis | |
SK-02 | Typical Wall to Foundation | Embodied Carbon Summary | |||
SK-03 | Typical Inside & Outside Corners | Clear Field Wall Thermal Modeling | |||
SK-04 | Typical Floor to Floor | Linear Thermal Modeling | |||
SK-05 | Typical Wall to Roof |
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SK-06A-06B | Typical Wall to Window |
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SK-07A-07B | Typical Wall to Curtainwall |
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| Specifications | Product Information | ||||
 | Section 070543 | Rainscreen Cladding Attachment System - Rigid Insulation |  | Knight Wall Systems | HCI System |
Section 071300 | Sheet Waterproofing | Henry | MiraDri 860/861 | WP200 | ||
Section 072100 | Thermal Insulation - Semi-Rigid | DuPont | STYROFOAM WallGuard | ||
Section 072216 | Roof Insulation | DuPont | STYROFOAM XR | ||
Section 072700 | Air Barriers | Henry | Metal Clad 705FR | ||
Section 074213 | Metal Composite Material Wall Panels | 3A Composites | ALUCOBOND Plus & AXCENT | ||
Section 084413 | Glazed Aluminum Curtain Walls | EFCO | 5600X | ||
Section 085113 | Aluminum Windows | EFCO | 325X | ||
| Short Form Specifications Courtesy of: | Linear Thermal Bridging Modeling by: |
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