Why Modern MgO Subflooring is Non-Corrosive？

 The non-corrosive nature of premium MgO subfloor panels relies entirely on their chemical matrix:

  Magnesium Sulfate Formulation (): By replacing Magnesium Chloride () with Magnesium Sulfate, the manufacturing process eliminates free chloride ions.

  Zero Leaching: Sulfate-based boards do not exhibit hygroscopic (moisture-attracting) pulling of ambient water in high-humidity zones. Because the board stays dry internally and lacks chlorides, it will not degrade or corrode steel joists, light-gauge steel framing, or subfloor fasteners.

  Acoustic & Structural Integrity: The resulting matrix is a dense, crystalline structure that provides excellent shear strength and acoustics without compromising the surrounding metal infrastructure.

For structural subfloor applications (such as modular construction, multi-family mid-rises, or heavy-duty commercial spaces), non-corrosive MgO boards typically conform to the following engineering profiles:

Property	Typical Specification
Standard Thicknesses	15mm, 18mm, 20mm
Edge Profile	Tongue & Groove (T&G) or Square-Edge (S-Edge)
Density	High Density ( to )
Fire Rating	Class A1 (Non-combustible) / ASTM E136
Flexural Strength	High structural capacity (capable of meeting span ratings for 16" or 24" on-center joist spacing) More iinformation, please visit at www.hocre-board.com or send message by whatsapp +86 15001321220

MgO T&G Panels vs. Traditional Subfloors

 When comparing Magnesium Oxide (MgO) Tongue & Groove (T&G) Panels to traditional subflooring materials—primarily Oriented Strand Board (OSB) and Plywood—the choice comes down to a balance between high-performance durability and upfront material costs.

MgO panels have rapidly gained traction in commercial, modular, and high-end residential builds due to their superior material properties. Here is a detailed breakdown of how they stack up against traditional options.

Technical Performance Comparison

Feature	MgO T&G Panels	Traditional Subfloors (OSB / Plywood)
Fire Rating	Class A1 / Flame Spread 0 (Non-combustible)	Combustible (Requires additional fire-rated underlayments)
Moisture Resistance	Excellent; does not delaminate, swell, or rot	Poor to Moderate; prone to edge-swelling and delamination
Mold/Pest Resistance	Naturally immune to mold, termites, and wood-boring insects	Vulnerable unless heavily chemically treated
Dimensional Stability	High; minimal expansion/contraction	Moderate; prone to warping, cupping, and squeaking over time
Environmental Impact	Low carbon footprint; captures  during curing; formaldehyde-free	Higher VOC emissions (glues/resins); intensive logging

 

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Magnesium Oxide (MgO) cladding panels

 

Magnesium Oxide (MgO) cladding panels are high-performance exterior and interior wall systems that have become a preferred alternative to traditional fiber cement, stucco, and wood cladding. Composed of magnesium oxide, natural minerals, and fiberglass mesh reinforcement, these panels offer ultimate structural protection.

Key Advantages of MgO Exterior Cladding

• A1 Fire Resistance: MgO is completely non-combustible. It has zero flame spread and smoke development ratings, allowing assemblies to easily hit 1-hour to 2-hour fire ratings under rigid ASTM/UL configurations.
• Weather and Vapor Control: Unlike legacy timber or gypsum products, high-quality MgO sheathing does not warp, swell, rot, or delaminate when exposed to heavy driving rain, moisture, or freeze-thaw cycles. It maintains excellent vapor permeance, helping the building envelope dry efficiently.
• Impact Strength: MgO panels carry significantly higher flexural and tensile strength than fiber cement boards, providing exceptional wind-load resistance and durability against harsh physical wear.
• Eco-Friendly Integrity: Manufactured through low-energy processes, MgO boards act as a carbon sink during curing and contain zero toxic resins, formaldehyde, heavy metals, or dangerous crystalline silica dust

Mgo cladding panel  thickness： 12mm, 14mm, 15mm, 16mm

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What is an MgO Wall Lining Board?

 An MgO wall lining board is a factory-manufactured mineral casting made primarily from magnesium oxide, magnesium chloride (or sulfate), water, and reinforced with a heavy-duty fiberglass mesh layer. This unique combination yields a dense, mineral-hard panel that mimics the structural integrity of concrete but can be scored, cut, and fastened using standard carpentry tools.

Material Property	Traditional Gypsum Drywall	Fiber Cement Board	Premium MgO Board
Fire Resistance	Limited (Type X required)	Class A1 (Non-combustible)	Class A1 / Zero Smoke Spread
Moisture Response	Absorbs water, molds, decomposes	Dimensionally stable but heavy	Waterproof, does not rot or warp
Environmental Impact	High carbon footprint	Contains crystalline silica	Eco-friendly, CO2 absorbing
Tensile / Impact Strength	Low (easy to puncture)	Medium (brittle)	Extremely high impact resistance

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Through color fiber cement TRANSPARENT PANELS

 The key advantage of Through-Color Fiber Cement Transparent Panels comes down to one core concept: it achieves a raw, natural concrete aesthetic without any of the structural or maintenance vulnerabilities of traditional concrete or painted panels.

By combining a through-body pigmented core with a crystal-clear protective topcoat, it solves the classic architectural dilemma of choosing between organic beauty and long-term durability.

standard thickness of 8 mm or 12 mm for exterior cladding.

• Standard Width: 1220mm（4 feet)
• Standard Lengths:
• 2440 mm (8feet) — Ideal for standard floor-to-floor heights, residential partitions, and modular layout designs.
• 3050 mm (10feet) — The preferred choice for commercial high-rise facades, luxury lobbies, and continuous vertical lines.

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A White T&G (Tongue & Groove) Subflooring MgO (Magnesium Oxide) Board 16mm,18mm and 20mm

 A White T&G (Tongue & Groove) Subflooring MgO (Magnesium Oxide) Board represents a heavy-duty, structural-grade flooring substrate designed to replace traditional plywood, OSB, and fiber cement underlayments.

By combining the structural interlock of a machined Tongue & Groove profile with the fireproof, water-resistant properties of MgO chemistry, these boards create an ultra-flat, non-combustible, and acoustically quiet subfloor matrix.

Property	Standard Metric/Specification	Engineering Advantage
Typical Thickness	16mm, 18mm, or 20mm	Matches or replaces standard 3/4"plywood/OSB subfloors.
Density Range	1050  to 1200 kg/m3	Structural grade; delivers solid underfoot feel with zero bounce.
Fire Performance	Class A1 / Class 0 (Non-combustible)	Acts as an integrated fire barrier between floor assemblies.
Flexural Strength	High Modulus of Rupture (MOR)	Easily supports ceramic tile, stone, or heavy screeds without cracking.
Finish Adaptability	Smooth front / Textured sanded back	Ready for direct adhesive bonding of tiles, vinyl, or hardwood.

 

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4mm and 6mm Sanded Mgo board Class-A Fire-Rated Core for Premium Laminates (HPLCPL Core)

 In the 4mm and 6mm thickness range, Sanded MgO Boards primarily serve not as independent drywall panels, but as high-precision, high-strength, Class-A fire-rated substrates (or core boards).

  Replacing Traditional Substrates: In public spaces with strict fire codes (hospitals, schools, airports), traditional MDF and plywood are often disqualified. Sanded MgO boards provide a non-combustible (Class A) alternative.

  High-Precision Lamination: These boards serve as the rigid core for High-Pressure Laminates (HPL), Continuous Press Laminates (CPL), or acrylic sheets applied under high heat and pressure.

  Finished Products: The resulting composite panels are used for anti-bacterial hospital wall cladding, school desk tops, and chemical-resistant lab counters. The sanded surface ensures the final laminate is mirror-flat with zero telegraphing (no bumps or dimples showing through).

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