fibre cement lap cladding

 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 are non-combustible (often rated Class A or A1), making them ideal for high-risk wildfire zones or commercial applications.
• Moisture & Rot Resistance: Unlike wood, fiber cement does not rot, swell, or buckle when exposed to rain or humidity. It is also resistant to termites and other wood-boring insects.
• Dimensional Stability: It has a low thermal expansion coefficient, meaning it won't shrink or expand drastically with temperature changes, which helps maintain the integrity of paint and seals.
• UV Resistance: When factory-finished or treated with high-quality coatings, it holds color much longer than traditional timber siding.

Common Specifications

Feature	Typical Standards
Thickness	8mm to 12mm (5/16" to 1/2")
Standard Widths	150mm to 300mm (approx. 6" to 12")
Surface Finish	Smooth (modern) or Cedar/Woodgrain (traditional)
Installation	Blind nailed (fasteners hidden) or Face nailed

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Grooved Weatherboard • Interior-Exterior fiber cement sheeting

 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 or Group 1 ratings), making them ideal for high-risk bushfire zones or commercial interiors requiring strict fire compliance.
• Moisture Stability: Unlike wood, fiber cement does not swell, rot, or warp when exposed to moisture. In exterior applications, this prevents paint from peeling prematurely; in interiors, it handles high-humidity areas like laundries or mudrooms effectively.
• Thermal & Acoustic Mass: The density of the sheeting provides better sound insulation and thermal inertia compared to thin PVC or metal siding.

Application Versatility

Application	Usage Benefits
Exterior Facades	Used for full wraps or accent walls. The deep grooves create strong shadow lines that define the architectural profile of a building.
Interior Walls	Often used for "shiplap" styles or wainscoting. It is much more impact-resistant than standard gypsum drywall, making it suitable for high-traffic hallways.
Soffits & Ceilings	Provides a clean, linear look for porch ceilings or undercover outdoor areas where durability against wind-driven rain is required.

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Why 19mm MgO Board for Passive Fire Protection?

 

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" in multi-story buildings.

3. Resistance to "Sweating" (Sulfate vs. Chloride)

For 19mm flooring, it is recommended to use Magnesium Sulfate (MgSO4) based boards.

• Chloride-free: Prevents the "crying board" phenomenon where moisture leaches out and corrodes metal joists or fasteners.
• Stability: Sulfate boards offer better dimensional stability in changing humidity, ensuring the T&G joints stay tight.

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PASSIVE FIRE FLOOR CLADDING Magnesium Oxide (MgO) boards with a Tongue & Groove (T&G)

 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 T&G MgO boards are Class A1 (Non-combustible). They do not contribute to fire spread and release no toxic smoke.
• Standard Thickness: Usually ranges from 18mm to 20mm for structural flooring, though thinner boards exist for underlayment.
• Edge Profile: The T&G system allows for a seamless, interlocking fit that distributes weight across the joints and prevents "stepping" between panels.
• Density: Generally between 1,000 kg/m³ and 1,200 kg/m³ to ensure flexural strength and impact resistance.

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2-sided TG 2700x600x16mm fiber cement decking board

 For a 2-sided Tongue and Groove (TG) fiber cement decking board with dimensions of 2700mm x 600mm x 16mm, you are looking at a high-density, structural-grade panel typically used as a subfloor or finished floor base in modular construction or mezzanine applications.

Technical Specifications & Characteristics

Feature	Description
Material	Cellulose fiber-reinforced cement (Autoclaved)
Density	Generally ≥1.3g/cm3 for structural flooring
Fire Rating	Typically A1 or A2-s1, d0 (Non-combustible)
Edge Profile	Tongue & Groove (TG) on the long edges (2-sided)
Surface Finish	Sanded or smooth; ready for tiling, vinyl, or coating

Key Performance Benefits

• Structural Integrity: At 16mm thickness, these boards provide a stiff, walkable surface. The TG profile ensures load transfer between panels, reducing "bounce" and eliminating the need for noggings under every joint.
• Moisture Resistance: Unlike plywood or particle board, fiber cement will not rot, warp, or delaminate when exposed to moisture during the construction phase.

Dimensional Stability: Low thermal expansion/contraction coefficient, which is critical for long-span decking

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12mm ship lap edge groove boards Mgo panels

 For 12mm MgO Shiplap panels, the focus shifts from structural flooring to decorative and functional wall cladding (facades). Shiplap is highly valued in international markets like the US, Canada, and Australia for its superior water-shedding capabilities and "seamless" aesthetic.

The 12mm thickness is specifically optimized for vertical applications where weight and ease of installation are as important as fire resistance.

Key Technical Specifications (12mm)

Feature	Target Specification	Purpose
Density	1,000kg/m³ – 1,150kg/m³	Balances impact resistance with ease of handling.
Bending Strength	>12 MPa	Ensures the board can withstand high wind loads.
Fire Rating	Class A1 (Non-combustible)	Critical for high-rise or boundary wall compliance.
Edge Profile	10mm - 12mm overlap	Provides a secure seal and aesthetic shadow line.
Water Absorption	< 15% (Sealed/Coated)	Prevents the board from getting heavy in rain.

 

The Shiplap Advantage vs. T&G

While T&G (Tongue and Groove) is designed for interlocking floors, the Shiplap (also called a "Rebate Joint") is the preferred edge for 12mm exterior panels because:

• Water Management: The overlapping "lap" joint creates a natural rain screen. Gravity ensures water sheds off the face of the board rather than being driven into the joint by wind.
• Movement Allowance: It allows for slightly more thermal and moisture expansion/contraction than a tight T-joint without visible gapping or "tenting."
• Blind Fastening: It allows for screws or nails to be driven through the recessed "lap," which is then covered by the overlap of the next board, hiding the fasteners for a cleaner look.

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Tongue & Groove Fire-Resistant Mgo board Flooring

 

For heavy-duty flooring applications, Tongue & Groove (T&G) MgO boards are often the gold standard due to their structural integrity and superior fire resistance compared to traditional plywood or OSB.

Here is a breakdown of the technical specifications, benefits, and installation considerations for T&G MgO flooring:

1. Key Technical Advantages

• Fire Rating: Most high-quality MgO boards are classified as non-combustible (Class A1/UL 050). They do not contribute to flame spread and maintain structural stability under high heat.
• Dimensional Stability: Unlike wood-based subfloors, MgO does not warp, swell, or delaminate when exposed to moisture. This is critical for maintaining the T&G joint integrity.
• Insects & Mold: Naturally resistant to termites and mold growth, as the inorganic composition does not provide a food source for biological agents.
• Acoustics: Due to its high density, MgO flooring offers excellent sound dampening properties (STC and IIC ratings) compared to lightweight timber boards.

2. Common Flooring Specifications

Feature	Standard Range
Thickness	18mm to 20mm (Typical for structural subflooring)
Density	$1,000 \text{ kg/m}^3$ to $1,200 \text{ kg/m}^3$
Edge Profile	2-sided or 4-sided Tongue & Groove
Bending Strength	15–20 MPa (Depending on glass fiber mesh layers)

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