Benefits of Using Magnesium Oxide (MgO) Board

Magnesium oxide board, commonly known as MgO board, is a next-generation construction material that offers a wide range of features across commercial, residential, and industrial applications. Below, we explore in detail the key mgo board benefits and why it has become the preferred choice for architects, contractors, and developers worldwide.

One of the most important MgO board features is its outstanding fire resistance. Classified as A1 non-combustible under EN 13501-1, it will not burn at 800°C and shows no visible flames even when exposed to temperatures of 1200°C. Unlike traditional gypsum or plywood boards, MgO boards absorb a significant amount of heat during combustion, effectively delaying fire spread and providing critical evacuation time in emergencies. When used with metal studs and rock wool, it can form partition systems that achieve over 3 hours of fire resistance.

Applications: Ideal for schools, hospitals, high-rise buildings, tunnels, and prefabricated housing where stringent fire safety is mandatory.

MgO board performs reliably in both humid and dry environments. It resists swelling, warping, or softening—even after prolonged water exposure. In lab tests, boards submerged for 72 hours returned to full function after natural drying. Additionally, it is free from salt efflorescence, making it suitable for coastal and tropical regions.

👉 Can MgO boards be used for exterior walls?

Yes—with proper surface treatment or cladding, MgO boards can serve as part of ventilated façade systems or underlayment in exterior walls.

Compared to cement boards and bricks, MgO board is significantly lighter, with a typical density of 0.8–1.2g/cm³. This not only reduces transportation costs but also cuts interior wall load by over 60%, thereby improving seismic resistance and structural safety. Moreover, reduced wall thickness adds 5–8% more usable floor area, offering greater design flexibility.

MgO boards are produced using natural mineral powder and plant fibers, cured at room temperature with zero emissions. They contain no asbestos, formaldehyde, benzene, or other harmful substances. In case of fire, they emit no smoke or toxic gases, making them ideal for hospitals, schools, and green building projects.

The unique microporous structure of MgO board gives it a low thermal conductivity, providing effective thermal insulation. When used in wall or ceiling systems, it reduces heat transfer and enhances indoor energy efficiency, which can translate to lower HVAC costs in both hot and cold climates.

Installation is quick and versatile: MgO board can be cut, nailed, screwed, drilled, or painted with ease. Compatible with brad nails, gun nails, and self-tapping screws, it eliminates the need for specialized tools. Its flexible yet stable composition also reduces breakage during handling or transport.

Thanks to its dense structure and consistent thickness, MgO board delivers impressive acoustic performance. A standard 6mm board provides 29dB of airborne sound reduction, while a 9mm double-panel partition system with metal studs and rockwool can achieve over 42dB sound insulation—suitable for hotels, office partitions, and studios.

Magnesium oxide board features exceptional durability and stability—this is why MgO board is built to last. It resists corrosion, shrinkage, and thermal expansion, and is not affected by acids or alkalis. Tested to endure over 50 freeze-thaw cycles, it remains dimensionally stable across decades. These properties make it a strong alternative to OSB or fiber cement board in tough environments.

Made entirely of inorganic minerals, MgO board is uninhabitable for mold and pests. It will not rot, mildew, or attract termites—making it ideal for humid climates or applications such as basement walls, bathroom ceilings, or container houses.

At Suparna, we believe performance should be backed by evidence. That’s why our MgO boards have undergone rigorous testing for fire resistance (including fire rating and fire duration) and safety.

👉 Visit this page to view our certified test reports and technical datasheet.

If you’re planning a project and need expert guidance or customized product solutions, contact our team — we’re ready to help you build smarter, safer, and greener.