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When deciding between Sanded MgO (Magnesium Oxide) Board and Fiber Cement Board (FCB) for high-performance building projects, the choice often comes down to the specific technical demands of the application. While both are excellent non-combustible alternatives to drywall and plywood, they behave very differently under the drill, in humid environments, and during installation

Dimensional Accuracy & Surface Finish

• Sanded MgO Board: The defining feature of a sanded MgO board is that it undergoes mechanical wide-belt calibration. This eliminates the rough “screen layer” ...

Modified Magnesium Oxide (MgO) boards are specialized building materials engineered to overcome the historical weaknesses of standard MgO panels—specifically “crying” (leaching moisture) and salt-related corrosion. High moisture resistant versions typically utilize a Magnesium Sulfate (MgSO4) chemistry rather than the traditional Magnesium Chloride (MgCl2).

The Chemistry: Sulfate vs. Chloride

The primary factor in moisture resistance is the bonding salt used during the manufacturing process.

• Standard ...

What are Through-Color Fiber Cement Panels?

Unlike standard fiber cement boards that are surface-painted, through-color fiber cement (also known as integrally colored) features pigments that are blended into the raw materials during the manufacturing process.

The Advantage of Integral Pigmentation

• Seamless Edges: When the panel is cut on-site, the color of the core matches the surface. This eliminates the need for edge painting and hides the visibility of minor chips or scratches.
• Long-Lasting Vibrancy: Because the color is not just a skin, it resists ...

In a flat roofing system, MgO (Magnesium Oxide) boards act as a high-performance structural substrate or cover board. They are increasingly replacing traditional OSB (Oriented Strand Board), plywood, or gypsum-based boards due to their superior fire rating and moisture resistance.

Here is the technical breakdown of using MgO boards for flat roofing：

1. The Core Functional Role

In a ...

Magnesium Oxide (MgO) board is highly effective for outdoor applications, provided it is used correctly—primarily as a substrate rather than a finished exterior surface. While it is naturally moisture-resistant and non-combustible, it is not “waterproof” in the sense of being a final weather barrier.

 Primary Outdoor Uses

• Wall Sheathing: As a direct replacement for plywood or OSB, providing superior fire resistance and mold protection.
• Soffits ...

Fiber cement is a composite material made of Portland cement, cellulose fibers, and mineral fillers. When manufactured as a flat roofing sheet, it undergoes a high-pressure steaming process (autoclaving) that results in a material with remarkable dimensional stability and strength.

1. Unmatched Fire Safety (A1 Fire Rated)

For high-rise developments and industrial hubs, fire compliance is non-negotiable. Most ...

Fiber cement lap cladding is a highly durable exterior siding material made from a mixture of cellulose fibers, portland cement, sand, and water. It is designed to mimic the appearance of traditional wood siding—specifically “lap” or “clapboard” styles where each board overlaps the one below it—while offering significantly higher resistance to environmental factors.

Key Performance Benefits

• Fire Resistance: Most fiber cement products ...

Fiber cement grooved weatherboards are a versatile cladding solution, designed to mimic the aesthetic of traditional timber tongue-and-groove planks while providing the durability of masonry. Because they are composed of pressurized sand, cement, and cellulose fibers, they offer significant performance advantages in both internal and external environments.

Technical Performance

• Fire Resistance: Typically classified as non-combustible (often reaching A1 ...

1. Zero Flame Spread & Low Smoke

MgO boards do not burn. In the event of a fire, they do not contribute fuel to the flames and, crucially, do not emit toxic smoke or “dripping” particulates, which are the primary causes of injury during building evacuations.

2. Structural Integrity Under Heat

Unlike plywood or OSB, which lose structural capacity quickly when charred, MgO maintains its shape and load-bearing properties for a longer duration under high temperatures. This is vital for maintaining “compartmentation” ...

Magnesium Oxide (MgO) boards with a Tongue & Groove (T&G) profile are increasingly used as high-performance subflooring and underlayment. They offer a robust alternative to plywood or fiber cement, particularly in environments requiring high fire ratings and moisture resistance.

Core Technical Specifications

MgO flooring boards are typically denser and thicker than standard wall panels to handle structural loads.

• Fire Rating: Most ...