Non-Combustible Structural Wall Sheathing: Enhance your wall sheathing system with high-performance magnesium oxide boards.
Wide array of options and solutions with MgO sheathing boards, suitable for diverse applications ranging from new construction, offices, stores, modular buildings, residential projects, to the renovation of existing structures. Boasting fire resistance and quick installation, these boards offer a cost-effective alternative to other products.

Description: High-impact resistance and structural support.
Uses: Exterior and Interior Wall Sheathing
Replace: Gypsum, Fiber Board, OSB, Plywood, Engineered Wood Sheathing, Other Structural Panelized Wall Sheathing Products.
Key Advantages:
Physical Specifications:
SULFYCOR mgo sheathing board is engineered to provide exceptional protection and performance for interior & exterior wall systems. Made from high-quality magnesium sulfate, magnesium oxide sheathing boards offer superior fire resistance, weather resistance, and structural stability, making them the ideal choice for residential, commercial, and industrial buildings.

MgO board(MgSO4) is a sustainable, non-flammable building material for residential and commercial construction. It provides 2–3 hours of reliable fire resistance, maintaining structural stability at 800°C and resisting ignition up to 1200°C.

Unlike OSB and plywood, Sulfycor MgO boards withstand direct water contact without rotting, swelling or degrading. They sustain stable structural integrity and consistent performance in long-term humid environments.

MgO wall sheathing boards adopt a pure, harmless formula free of fly ash, formaldehyde, crystalline silica and other toxic substances, delivering safe and eco-friendly solutions for all construction scenarios.

Featuring inherent resistance to moisture, mold and pest infestation, MgO boards wall sheathing effectively avoid structural warping, swelling and deterioration, ensuring outstanding construction durability.

Made from natural mineral compounds, Sulfycor boards are fully recyclable and landfill-safe classified as nutritional waste. Verified by 36-month freeze-thaw tests, they support stable all-season construction applications.

Equipped with superior antimicrobial properties, Sulfycor magnesium sheathing board resist mold, mildew and rot. The chloride-free composition eliminates micro-corrosion and structural expansion risks for long-term reliability.
| Items | Non-Combustible Structural Wall Sheathing | Chloride-Based MgO Panel | OSB with Integrated Weather Barrier | Fiberglass-Mat Faced Gypsum | Chemically Coated OSB Sheathing | OSB |
|---|---|---|---|---|---|---|
| Formulation | MgO(SO4) | MgO(Cl2) | Wood | Fiber Glass & Gypsum | Wood & Proprietary Coating | Wood |
| Structural Wall Sheathing | YES | YES | YES | NO | YES | YES |
| Non-Combustible | YES | NO | NO | YES | NO | NO |
| Silica Free | YES | NO | YES | NO | YES | YES |
| Resists Corronsion | YES | Unknow | YES | YES | YES | YES |
| Chemical Free | YES | YES | NO | NO | NO | NO |
| Water Resistant | YES | YES | NO | NO | NO | NO |
| Mold Resistant | YES | YES | NO | NO | NO | NO |
| Mildew Resistant | YES | YES | NO | NO | NO | NO |
| Installs with Screws or Nails | YES | YES | YES | YES | YES | YES |

We understand that every project is unique. That’s why we offer customized MGO Sheathing solutions to meet your specific needs:
Let us help you find the perfect solution for your project.