What is MgO Board? (General Introduction)
Magnesium oxide board is made of natural materials such as inorganic substances, plant fibers. It is eco-friendly, healthy, and pollution-free, with no asbestos, formaldehyde and radiation. The board is an upgraded product that replaces wood board and gypsum board. It has not only the lightweight and flexible properties of wood-based organic boards, but also the fire-resistant and water-resistant properties of inorganic boards.
Composition of MgO Board
Magnesium Oxide (MgO): Magnesium oxide is a natural non-toxic inorganic mineral. It is calcined and pulverized into powders and mixed in the magnesium chloride solution.
Magnesium chloride (MgCl2): Add magnesium oxide powder into aqueous solution and stir until it becomes cement slurry.
Perlite (PO4): It is a type of obsidian, which is a vitric rock cooled rapidly from lava in volcanic eruption. It is widely used as an insulating material and added to magnesium oxide boards to enhance its fire resistance.
Wood fiber: Also known as sawdust, is mixed into the cement slurry and acts as an adhesive to assist the overall performance of the product.
Non-woven fabric: It is composed of directional or random fibers, with moisture-proof, breathable, flexible and other characteristics.
Fiberglass mesh: Fiberglass is an inorganic non-metallic material with excellent performance, which increases the strength and toughness in the board.
Key Features of MgO Board
1. Fire Resistant
Magnesium oxide board (MgO board) demonstrates outstanding fire resistance. Classified as a non-combustible material, it can withstand temperatures up to 800°C without burning and remains flame-free even at 1200°C. It complies with the highest fire safety standard, Class A1. When paired with quality metal studs in partition systems, it can deliver fire resistance of more than 3 hours. Its ability to absorb heat during combustion also slows the temperature increase in surrounding areas, enhancing safety.
2. Moisture Resistant
MgO board performs reliably in both dry and damp conditions. Even after prolonged water immersion and subsequent air-drying, it maintains its shape and strength without swelling, warping, or softening. Unlike traditional boards, it shows no signs of salt deposition or surface degradation after exposure to moisture.
Wondering if MgO board is suitable for outdoor use?
3. Lightweight & Earthquake-Resistant
With a density ranging from 0.8 to 1.2 g/cm³, MgO board is significantly lighter than many other construction materials. This reduces the overall weight of walls by over 60%, increasing usable indoor space by 5–8%. Its light weight and flexibility contribute to improved seismic performance, making it a preferred choice in earthquake-prone regions.
4. Eco-Friendly & Healthy
Free from harmful substances like asbestos, formaldehyde, benzene, and radioactive elements, MgO board is a safe, non-toxic solution for interior construction. It emits no smoke or harmful gases when exposed to flames. Manufactured with natural minerals and plant-based fibers using low-energy, emission-free processes, it’s a truly sustainable building material.
5. Thermal Insulation & Energy Efficiency
Thanks to its compact inorganic composition and uniform microporous structure, MgO board offers excellent thermal insulation. It helps maintain indoor temperatures, reducing reliance on HVAC systems and ultimately lowering energy costs.
6. Easy Installation
Lightweight and simple to handle, MgO board can be transported, cut, nailed, drilled, or painted with ease. It works with a wide range of fasteners—including self-tapping screws and pneumatic nails—and supports a variety of finishes, allowing for fast and flexible installation.
7. Sound Insulation
The fine, evenly distributed pores in MgO board contribute to excellent acoustic insulation. A 6mm board provides up to 29dB of sound reduction. When used in partition systems with metal studs and rock wool, total sound insulation can exceed 42dB, effectively minimizing noise transmission between rooms.
8. Durability
Built to withstand harsh conditions, MgO board resists corrosion, chemical attack, and weathering. It has low thermal expansion, minimal dimensional change, and strong resistance to aging. It remains stable through extreme temperature shifts, having passed more than 50 freeze-thaw cycles without damage.
9. Mold & Pest Resistant
Composed entirely of inorganic minerals, MgO board naturally resists mold, mildew, and insect damage—including termites. This makes it a dependable choice for environments with high humidity or where pest resistance is a concern.
Applications of MgO Board
Specific Uses:
Interior wall | Sub-flooring | Fire door | Ceiling | Decorative panel | Acoustic panel | Furniture | Fireplace | Duct
Application Areas:
Bathroom | Kitchen | Laundry room | Office buildings | Shopping malls | Hotels | Theaters | Schools | Gyms | Data centers | Libraries | Highway tunnels
How is MgO Board Made? (Production Process)
The production process of mgo board typically includes the following steps: raw material mixing, board forming, curing, demolding, drying, and cutting.
