Absolutely, MgO board has a range of benefits compared to fiber cement board, including being lighter, more flexible, having higher impact resistance, and better performance in fire tests. However, its larger wet expansion during wet and dry cycles does require careful consideration in construction to ensure proper frame positioning, adequate number of screws, and effective waterproofing. This ensures the structural integrity and longevity of the MgO board in various environmental conditions.
When comparing Magnesium Oxide (MgO) board and fiber cement board, it's essential to consider their composition, properties, applications, and benefits. Here's a detailed comparison:
Composition
MgO Board:
Made from magnesium oxide, non-organic minerals, fiber mesh composites, and bonders.
Often includes non-metal corrosive magnesium sulfate (MgSO4) instead of magnesium chloride. MagMatrix BMSC 51 is the most advanced and innovative new sulfate chlorine-free MGO board.
Natural and abundant materials such as seawater and brine pools are used in production.
Fiber Cement Board:
Composed of cement, cellulose fibers, and sand.
Some versions may contain silica, which can be harmful when inhaled as dust.
Properties
Fire Resistance:
MgO Board :Highly fire-resistant, can withstand extreme temperatures, and is often used for fire-rated applications.
Fibr cement board is also fire-resistant but generally does not have a rating as highg as MgO boards.
-Durability
MgO Board :Strong, impact-resistant, and does not deteriorate when exposed to water.
Fiber Cement Board: Durable but prone to cracking and may require maintenance.
Moisture Resistance:
MgO Board: Naturally resistant to mold, mildew, and rot, making it suitable for wet or humid environments.
Fiber Cement Board is moisture-resistant but can absorb water, leading to potential issues if not properly sealed and maintained.
Environmental Impact:
MgO Board: Low carbon footprint due to cleaner production processes and natural material sourcing.
Fiber Cement Board: Higher carbon footprint due to energy-intensive cement production processes.
Health and Safety:
MgO Board: Free from harmful chemicals like formaldehyde, asbestos, and silica, making it safer for indoor use.
Fiber Cement Board: This may contain silica, posing health risks if dust is inhaled during cutting or installation.
Applications
MgO Board:
Ideal for fire-rated walls, ceilings, and floors.
Suitable for wet areas like bathrooms, kitchens, and exterior cladding.
Used in high-performance building assemblies due to its breathability and structural sheathing, MagMatrix BMSC 517 New sulfate MGO boar, the Perseverance model is type I II for the exterior fire-rated sheathing panel for noncombustible constructions, and the multi-support is type IIIA and V for the timber frame fire-rated shear wall sheathing panel.
Fiber Cement Board:
Commonly used for exterior cladding and siding.
It is also used for interior walls, especially in areas that require durability and moisture resistance.
Suitable for both residential and commercial applications.
Benefits
MgO Board:
High fire resistance and structural fire ratings to help delete the fire rate gypsum systems and layers.
Excellent moisture resistance.
Environmentally friendly with a low carbon footprint.
Safe for indoor air quality.
Strong and durable with structural support capabilities.
Fiber Cement Board:
Good fire resistance.
Durable and long-lasting.
Moisture-resistant with proper maintenance.
Versatile for various applications, especially exterior cladding.
Summary
MgO board offers superior fire resistance, moisture resistance, environmental benefits, and indoor air quality safety compared to fiber cement board. It is well-suited for high-performance building assemblies and environments with high humidity or fire risks. On the other hand, fiber cement board is a durable and versatile option, widely used for exterior cladding and other applications where moisture resistance and durability are essential, albeit with some potential health and environmental concerns.
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