MgO Non-Combustible Structural Wall Sheathing
Recognized as the world's leading manufacturer of MgO products, MAXTERRA® MgO Non-Combustible Structural Wall Sheathing represents a leap forward in construction technology, offering a robust and sustainable alternative to conventional sheathing materials.
MAXTERRA® MgO Non-Combustible Structural Wall Sheathing are high density structurally rated magnesium oxide products that can be used as a direct replacement for: plywood and OSB for exterior sheathing, interior and exterior gypsum panels, floor underlayment, concrete underlayment, and fire rated walls for stairwells and elevator shafts.

.png?height=2000&name=sheathing_lightshadows%20(1).png)
Description
High-impact resistance and structural support.
Uses
Exterior and Interior Sheathing, Underlayment, SIP Skins.
Replaces
OSB, Plywood, Engineered Wood Sheathing, Other Structural Panelized Wall Sheathing Products.
Key Advantages
- Enhanced Safety: Eliminates flammable materials.
- Ease of Use: Facilitates efficient installation.
- Long-Lasting Durability: Sturdy, low-maintenance solution.
- Versatile Application: Suitable for various sheathing needs.
Physical Specifications
- Thicknesses: ½” (12mm), 5/8” (16mm).
- Dimensions: 4' x 8', 4' x 10', 4' x 12'.
- Weight:
- 1/2" - 2.83 lbs/sq ft
- 5/8" - 3.77 lbs/sq ft
- Edge Treatments: Square
Code Compliance
- ICC ESR-5193
- Chicago Building Code Supplement.
- Los Angeles County Building Code Supplement, Commercial and Residential.
- California Building Code Supplement, Commercial and Residential.
- Florida Building Code Supplement, Commercial and Residential.
- Florida Product Approval for use on SIPs.
- Certified for use on Wood, Light Gauge Steel, and Mass Timber Floor Applications.
- 2021, 2018, and 2015 International Building Code®
- 2021, 2018, and 2015 International Residential Code.
- ICC-ESL 1568 for Fire Rated Assemblies.
- Non-Combustible: ASTM E-136 rating, as referenced by the 2024 IBC and 2024 IRC .
- ASTM E84 Flame Spread 0, Smoke Developed 0
- AC 386, AC 269.1, AC 269.2, AC 376, AC 378 Fiber Reinforced MgO Sheathing.
- E119/UL 263 One- and Two-Hour Fire Rated Assemblies.
- NFPA 285
- International Wildland Urban Interface Code (IWUIC).
Wall Sheathing Comparisons
