Magnesium Oxide Fireproof Sulfate Building Material For Interior/Exterior Wall Board
MgSO₄ board represents the future of sustainable, fire-safe construction. Its unique combination of A1 fire protection, zero corrosion risk, and environmental benefits makes it the superior choice for interior and exterior wall applications across diverse climatic conditions and building types. As green building standards continue to evolve, this innovative material is poised to become the industry benchmark for safety, durability, and sustainability in modern architecture.
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Product Introduction
Magnesium Oxide Fireproof Sulfate Building Material for Interior/Exterior wall Board
Magnesium Oxide Fireproof Sulfate Building Material, commonly referred to as MgSO₄ Board (or Sulfate MGO Board), is an advanced inorganic composite building panel applicable to both interior and exterior wall construction. As a significant improvement over traditional magnesium chloride (MgCl₂) MGO boards, it effectively resolves common issues such as corrosion and moisture-induced problems. This eco-friendly and non-combustible panel has brought a revolution to modern construction, featuring versatile performance that is suitable for residential, commercial, and industrial projects.
Advantages of Magnesium Oxide Fireproof Sulfate Building Material for Interior/Exterior wall Board
1. Fire Resistance
It's A1 fully non-combustible, with no flame spread, smoke or toxic fumes in a fire.It can stand extreme high heat for hours and still keep its structure solid.When exposed to fire, it releases water vapor to cool down areas and form a protective barrier.It also meets standard fire test requirements with great flame and smoke control performance.
2. Moisture & Corrosion Resistance
Made with magnesium sulfate, it won't have salt blooming or damp sweating problems.It's totally non-corrosive, so it works safely with steel frames and metal fixtures.It features good water resistance, perfect for humid spaces like bathrooms, kitchens and coastal buildings.The inorganic material stops mold and mildew from growing easily.
3. Structural Performance
It keeps stable in changing temperature and humidity, no warping, cracking or shrinking.Reinforced with fiber glass mesh, it owns strong bending strength and great impact resistance.It's much lighter than cement boards, helping reduce the overall building weight.It's flexible enough to be curved, ideal for special architectural design shapes.
4. Additional Advantages
Great thermal insulation helps save energy for both interior and exterior walls.Nice sound insulation effectively blocks noise between separate rooms.Eco-friendly and safe, with no formaldehyde or heavy metals, and fully recyclable.Highly durable against insects and damp, with long service life and low upkeep needs.Easy to cut, drill and install with common tools, speeding up construction work.
Magnesium oxide wall board is a technologically advanced building material that offers superior performance in every category when compared to traditional wood, gypsum and cement based products.
Magnesium Oxide Wall Panels are cementitious substrate products reinforced with magnesium oxide fibre matting.
Fire resistant magnesium oxide wallboard is a new type of refractory material. It is widely used primarily as a wallboard alternative to conventional gypsum-based drywall and plywood.
It is non combustible and fire rated Class A1. With options for up to a 2 hour fire resistance, MgO Board offers an innovative passive fire protection alternative for your construction projects.
MgO board has very good fire performance. It does not spread flames or smoke. It is noncombustible and fire-rated A1, which helps protect homeowners, tenants and building occupants while mitigating damage and loss.
Magnesium oxide wall board is made of magnesium oxide, magnesium sulfate or magnesium chloride, glass fiber mesh, perlite and wood fiber.
It is an upgraded product of fireboard. A properly constructed assembly with our MgO fireproof wall board can achieve a 3-hour fireproof rating.
Fire Resistant Internal Wall Board
Our Fire Resistant Internal Wall Board is a fiberglass reinforced magnesium oxide cement board. It can be used to replace traditional gypsum drywall for wall and ceiling finishes and sheathing.
Fireproof Exterior Wall Panels
Magnesium oxide board is a new type of fire-resistant building material. The main raw materials are magnesium oxide, magnesium chloride/sulfate and perlite.
We are a company dedicated to magnesia cement products. Our main products are Magnesium Oxide Boards (MGO Board) for construction and laminated MgO boards for furniture and renovation. Our mission is to provide the world's construction markets with environmentally friendly, high-performance and sustainable green materials.
We work with China Magnesium Materials Association (CMMA) and Magnesium Oxide Association (MOCA) in North America to raise awareness and promote the use of magnesium oxide cement products. We focus on the quality control and consistency of the MGO products. We have been actively involved in developing American Society for Testing and Materials (ASTM) standards related with MGO products.
Applications: Interior & Exterior Wall Solutions
1 Interior Wall Applications
Partition Walls: Fire-rated (1-4 hours) and sound-insulated room dividers in offices, hospitals, and schools
Wet Area Linings: Bathroom, kitchen, and laundry room backer boards (tile-compatible)
Fire Barriers: Stairwells, elevator shafts, and fire escape routes in high-rise buildings
Acoustic Treatment: Studios, cinemas, and conference rooms requiring noise reduction
Ceiling Systems: Suspended and direct-applied ceiling panels with integrated fire protection
2 Exterior Wall Applications
Exterior Sheathing: Weather-resistant substrate for siding materials (vinyl, fiber cement, stone veneer)
Curtain Wall Backing: Structural support for glass and metal curtain wall systems
Facade Cladding: Ventilated and non-ventilated exterior cladding with decorative finishes
Roofing Underlayment: Fire-resistant base for roofing materials in commercial buildings
Soffits & Fascias: Durable, weather-resistant solutions for roof edges and overhangs
3 Specialized Applications
Marine Construction: Ship interiors and offshore platforms (corrosion-resistant)
Industrial Facilities: Factories, power plants, and chemical plants (fire/chemical resistance)
Historical Renovations: Compatible with traditional building materials while improving safety
Installation Guidelines
1 Preparation
Store boards flat in dry, well-ventilated area (10-25°C, RH 50-70%)
Acclimate boards to job site conditions for 48 hours before installation
Use stainless steel or hot-dip galvanized fasteners (prevents potential corrosion)
2 Installation Steps
Framing: Use steel or treated wood studs (16-24" on center)
Cutting: Score with utility knife and snap, or use power tools with carbide-tipped blades
Fixing: Fasten boards with screws every 6-8" along edges and 12" in field; maintain 2mm expansion gaps
Joint Treatment: Fill gaps with MgSO₄-based joint compound and reinforce with fiberglass tape
Finishing: Prime with water-based primer before painting, wallpapering, or tiling
Technical Specifications (Standard Sizes)
Thickness: 6mm, 8mm, 10mm, 12mm, 15mm, 20mm
Dimensions: 2440×1220mm (standard), custom sizes available
Edge Profiles: Square edge, shiplap, tongue & groove (T&G)
Density: 800-1,250 kg/m³
Flexural Strength: ≥12 MPa (standard), ≥16 MPa (premium)
Thermal Conductivity: 0.18-0.25 W/m·K
Water Absorption: ≤10% (24-hour immersion)
Best Practices for Optimal Performance
Avoid Direct Ground Contact: Use proper wall flashing and ventilation for exterior applications
Moisture Management: Ensure adequate ventilation in enclosed spaces
Fastener Selection: Use only stainless steel or hot-dip galvanized hardware
Joint Treatment: Never use cement-based compounds on MgSO₄ board joints
Finishing Compatibility: Use water-based rather than solvent-based finishes
Comparative Advantages vs. Traditional Materials
| Material | MgSO₄ Board | Gypsum Board | Cement Board | Plywood |
|---|---|---|---|---|
| Fire Rating | A1 (4 hours) | B (30-60 min) | A1 (2 hours) | D (flammable) |
| Water Resistance | Excellent | Poor | Good | Moderate |
| Corrosion Risk | None | None | Low | None |
| Weight | Light (800-1,200 kg/m³) | Light (600-800 kg/m³) | Heavy (1,800-2,000 kg/m³) | Medium (500-700 kg/m³) |
| Dimensional Stability | Excellent | Poor | Good | Poor |
| Eco-Friendliness | 100% recyclable | Recyclable | Limited | Renewable but high carbon |
| Cost | Medium | Low | High | Medium |
FAQ
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