Fireproof Moisture-Proof And Chlorine-Free MGO Board
This Fireproof, Moisture-Proof & Chlorine-Free MGO Board combines "safety, durability, and versatility" to address the core demands of modern construction. With its inorganic composition, global certification compliance, and compatibility with diverse scenarios, it is an ideal choice for international trade clients targeting high-quality building material markets.
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Product Introduction
Fireproof Moisture-Proof and Chlorine-Free MGO Board
This board is an inorganic composite material. It's made with high-purity magnesium oxide, food or industrial-grade magnesium sulfate, plant fiber or perlite fillers, and reinforced with multiple layers of fiberglass mesh.
The magnesium sulfate-based cement system creates a dense crystal structure. That means it's naturally fire-resistant, moisture-resistant, and corrosion-resistant-no extra coatings or additives needed.
It's an upgraded version of the traditional MGO board. Instead of using magnesium chloride, we use magnesium sulfate as the cement modifier. It combines three key benefits: top-level fire resistance, great moisture resistance, and no chlorine corrosion. It also keeps high strength, stable dimensions, and is eco-friendly.
It's designed for all kinds of construction projects around the world, from homes to factories. It solves the old problems of traditional MGO boards-like halogen return, efflorescence, and metal corrosion-making it the top choice for high-demand projects.
Advantages of Fireproof Moisture-Proof and Chlorine-Free MGO Board
1 Fire Resistance: Class A1 Non-Combustible, Safe & Reliable
Combustion Performance: Certified Class A1 non-combustible (EN 13501-1, ASTM E136), no flame spread, no melting, and no dripping in fires.
Fire Resistance Rating: 1–4 hours (varies by thickness and installation; 15mm thick achieves ≥2h, 20mm thick reaches 3–4h per ASTM E119/GB/T 9978).
High-Temperature Tolerance: Maintains structural integrity at 800℃, no collapse at 1200℃; only releases clean water vapor (no toxic fumes like CO or formaldehyde).
Smoke Suppression: Smoke Density Index (SDI) < 5 (ASTM E84), ensuring high visibility in fires for safe personnel evacuation-ideal for densely populated areas (schools, hospitals, shopping malls) and industrial sites (data centers, warehouses).
2 Moisture Resistance: No Halogen Return, Mold-Proof & Durable
Humidity Adaptability: Performs stably in environments with 80–95% relative humidity; no swelling, deformation, or efflorescence (tested per EN 12467).
Mold & Termite Resistance: Inorganic composition inhibits mold growth (meets ASTM G21-15 mold resistance standard) and termite infestation, suitable for basements, bathrooms, kitchens, and coastal/humid regions (e.g., Southeast Asia, Middle East).
Water Absorption: ≤15% (24-hour immersion test), far lower than traditional MGO boards (≥25%) and gypsum boards (≥30%), ensuring long-term durability in damp conditions.
3 Chlorine-Free Corrosion Resistance: Protects Steel Structures
No Metal Corrosion: Free of chloride ions, it does not corrode steel keels, fasteners, or steel structures (tested per ISO 9223); compatible with light steel framing systems-eliminating the need for additional anti-corrosion coatings on steel components.
Long-Term Stability: No "halogen return" (salt efflorescence on the surface) even in humid environments, avoiding structural damage or aesthetic issues caused by salt crystallization.
4 Environmental and Health Performance
Non-toxic: Free of asbestos, formaldehyde, benzene and radioactive elements
Fire behavior: No smoke, no toxicity, no odor
Anti-bacterial performance: Antibacterial rate over 99.99%, mildew resistance grade 0
pH value: 9-11, natural alkaline barrier inhibits microbial growth
Key Formula Upgrade: Chlorine-Free Design
| Component | Chlorine-Free MGO Board (MgSO₄-Based) | Traditional MGO Board (MgCl₂-Based) | Advantage |
|---|---|---|---|
| Cementitious Modifier | MgSO₄ (no free Cl⁻) | MgCl₂ (contains free Cl⁻) | Eliminates halogen return, efflorescence, and steel corrosion |
| Cl⁻ Content | ≤0.012% | ≥0.5% | Compatible with steel structures; no long-term maintenance costs |
| Hydration Product | Stable magnesium sulfur-oxygen crystals | magnesium chloride hydrates | Better moisture resistance and dimensional stability |
Application Scenarios
Leveraging its multi-functional advantages, this board is widely used in global construction projects:
Public Buildings: Schools, hospitals, shopping malls, airports, and subway stations (fire-resistant walls, flooring substrates, and fire compartments).
Residential & Commercial Buildings: Basements, bathrooms, kitchens, balconies (moisture-proof walls/flooring), and underfloor heating substrates.
Industrial Buildings: Factories, warehouses, data centers, and clean rooms (corrosion-resistant walls, load-bearing flooring, and equipment room partitions).
Special Scenarios: Coastal buildings (salt spray corrosion resistance), modular buildings (lightweight and quick installation), and ships (fire-resistant bulkheads).
Standard Specifications & Customization Options
Thickness: 6mm, 8mm, 10mm, 12mm, 15mm, 20mm, 25mm 4mm–30mm (minimum order quantity: 500pcs)
Size: 2440×1220mm (4ft×8ft), 3000×1220mm Maximum size: 3600×1220mm (width ≤1220mm)
Edge: Profile Square Edge, Shiplap, Tongue & Groove (T&G) Custom edge designs (e.g., beveled edges)
Surface: Finish Smooth, Embossed Anti-slip surface for flooring; fire-retardant coating for special scenarios
Color: Natural Gray, White Custom colors (e.g., black, beige) with inorganic pigments
Comparative Advantages vs. Traditional Building Materials
| Material | Fireproof, Moisture-Proof & Chlorine-Free MGO Board | Traditional MGO Board (MgCl₂-Based) | Gypsum Board | Cement Board |
|---|---|---|---|---|
| Fire Rating | Class A1 | Class A1 | Class B1 | Class A1 |
| Moisture Resistance | Excellent (no halogen return) | Poor (prone to efflorescence) | Very Poor (deforms when wet) | Good (heavy) |
| Corrosion Resistance | No steel corrosion | Corrodes steel | No corrosion | No corrosion |
| Weight (10mm) | 10–12kg/㎡ | 11–13kg/㎡ | 8–10kg/㎡ | 20–25kg/㎡ |
| Installation Efficiency | High (T&G splicing) | Medium (needs anti-corrosion) | Medium (moisture-proof treatment required) | Low (heavy tools needed) |
| Long-Term Maintenance | Low (no corrosion/mold) | High (anti-corrosion needed) | High (easy to replace) | Medium (brittle, prone to cracking) |
Our Factory
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.
FAQ
Q: Is this MGO board truly chlorine-free, and will it corrode steel structures?
A: Absolutely. Our board uses MgSO₄ (magnesium sulfate) instead of traditional MgCl₂, with a Cl⁻ content ≤0.012% (tested per ISO 9223). It won't corrode steel keels, fasteners, or steel frames, eliminating the need for additional anti-corrosion treatments-ideal for light steel structure projects.
Q: What fire resistance rating does it have, and is it safe in fires?
A: It holds Class A1 non-combustible certification (EN 13501-1, ASTM E136) with a fire resistance rating of 1–4h (15mm thick ≥2h, 20mm thick 3–4h per ASTM E119). In fires, it releases only clean water vapor (no toxic fumes like CO) and has a Smoke Density Index (SDI) <5, ensuring safe evacuation for densely populated areas.
Q: Can it be used in humid or coastal environments without efflorescence?
A: Yes. The MgSO₄-based cementitious structure resists moisture absorption and halogen return (efflorescence). It performs stably in 80–95% relative humidity (tested per EN 12467) and is mold-proof (ASTM G21-15) and salt-spray resistant-perfect for basements, bathrooms, coastal buildings, or humid regions like Southeast Asia.
Q: What specifications can be customized, and what's the MOQ?
We offer flexible customization:
Thickness: 4mm–30mm (standard: 6/8/10/12/15/20mm);
Size: Up to 3600×1220mm (standard: 2440×1220mm);
Edge profiles: T&G, shiplap, square edge, or custom designs.The minimum order quantity (MOQ) for customization is 500pcs; standard specs have no MOQ limit.
Q: Is installation complicated, and what tools are needed?
A:Installation is simple and efficient-no professional skills required:
Cut with ordinary woodworking tools (saw, drill);
Fix to steel/wood keels with self-tapping screws (spacing 200–300mm);
T&G edges enable tight splicing, 30–50% faster than cement/gypsum boards.It's compatible with concrete, keel, or modular substrates.
Q: Can it be used with underfloor heating systems, and what scenarios is it suitable for?
A: Absolutely. With a thermal conductivity of 0.15–0.25 W/(m·K) and low linear expansion coefficient (≈8×10⁻⁶/℃), it withstands 0–80℃ temperature fluctuations without warping-ideal for underfloor heating substrates.Key scenarios: Public buildings (schools/hospitals), residential/commercial (basements/bathrooms), industrial (warehouses/data centers), coastal/modular buildings, and ship bulkheads.
Q: What is the core difference between them and ordinary magnesium oxide boards?
A: Environmentally friendly ones are superior to ordinary ones in terms of raw material purity (no harmful additives), production processes (low consumption and low emissions), health and safety (extremely low formaldehyde), and recyclability (easy to recycle).
Q: How to dispose of them after disposal?
A: Due to their main components being inorganic minerals and degradable fibers, they can be naturally degraded or crushed and reprocessed as raw materials for production, reducing construction waste pollution.
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