Fiber cement board is a highly durable building material, and when manufactured with a tongue and groove (T&G) profile, it is specifically designed for seamless installation in flooring, subflooring, and wall cladding.
Fiber cement is composed of Portland cement, sand, and cellulose fibers. While it will not rot, warp, or settle when exposed to ...
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There are main advantages of tongue and groove fiber cement board for interior wall cladding:
The tongue and groove interlocking design fits tightly, saves labor and construction time.
Suitable for bathrooms, kitchens, basements and humid indoor areas.
Class A non‑combustible, asbestos‑free, healthy for indoor living spaces.
No shrinking, no swelling, ...
Continue Reading →Tunnel environments are uniquely harsh, characterized by constant moisture, piston-effect air pressure from passing vehicles, and the necessity for high fire resistance.
Key Technical Requirements
In a tunnel, a fire can reach extreme temperatures very quickly (the RWS curve or HCinc curve). Tunnel boards must be Class A1 Non-combustible.
One of the primary safety advantages of fiber cement board is its behavior under extreme heat. Because it is composed of inorganic materials—primarily Portland cement, sand, and cellulose fibers—it is naturally non-combustible.
Here is a breakdown of why fiber cement is considered a safe choice for fire-rated assemblies:
Fire Performance Characteristics
To ensure durability in environments with high moisture, chlorides (coastal areas), and sulfur (industrial zones or volcanic regions), the selection of the board’s chemical composition and density is critical.
Standard fiber cement or common MgO boards may struggle under these specific conditions without the right additives or manufacturing processes. Here is a breakdown of the most resilient options:
Autoclaved, high-density fiber cement is generally the “gold standard” for moisture and atmospheric resistance.
MgO Sulfate board is an excellent choice for a roof substrate, particularly in high-performance or fire-rated roofing systems. Because it is chloride-free, it avoids the structural risks associated with traditional MgO boards when they come into contact with metal roof components.
Role as a Roofing Substrate
In a roofing assembly, the MgO Sulfate board acts as the rigid deck or recovery board. It provides a flat, stable surface for the final waterproofing layer.
The primary reason to choose Magnesium Oxysulfate (MgO Sulfate) board over the more common Magnesium Oxychloride (MgO Chloride) board—especially in roofing and structural applications—comes down to a single chemical enemy: Chlorides.
While both are “MgO boards,” their performance in real-world environments is drastically different. Here is the technical breakdown:
Regular MgO Chloride boards are hygroscopic, meaning they naturally absorb moisture from the air.
Matte finish fiber cement panels are a top-tier choice for modern architecture, offering a sophisticated, “stony” aesthetic without the gloss or glare of metal or plastic composites. They provide a muted, organic look that shifts beautifully with natural light.
Key Characteristics
When choosing between Through-Colored (Integrally Pigmented) and Painted (Surface Coated) fiber cement, the decision usually comes down to a trade-off between “natural material honesty” and “perfect color uniformity.”
Here is a breakdown of why through-colored boards are generally considered the premium choice for modern architecture.
A “translucent/matte through-colored smooth fiber cement facade” describes a high-end architectural cladding system that balances raw material honesty with a refined, modern finish.
While fiber cement itself is inherently opaque, the term “translucent” in this industry typically refers to the top coating or the visual “depth” of the panel, rather than the board being see-through like glass.
Key Characteristics