Fireproof Magnesium Oxide Board Backer Board
Fireproof Magnesium Oxide Board Backer Board unlike conventional backer materials (such as cement backer board, plywood, or gypsum board), it addresses the unique demands of high-moisture areas (bathrooms, kitchens) and fire-sensitive zones (fireplaces, commercial kitchens) by combining non-combustibility with superior adhesion properties. It acts as a stable, long-lasting base that prevents finish cracking, delamination, or water damage—making it a top choice for projects where durability and safety are non-negotiable.The characteristics of magnesium oxide boards, such as high strength, water resistance, dimensional stability, fire resistance, light weight, and ease of fixing, give them obvious advantages in hurricane-resistant building applications, effectively improving the safety and durability of buildings in hurricane environments.
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Product Introduction
We are a trusted provider of high-performance, sustainable building materials, focused on magnesium oxide (MGO)-based solutions.
Our core product - MGO Boards - offers fire resistance, lightweight with high strength, moisture and mold resistance, and lasting durability, making it ideal for a wide range of architectural and decorative applications.
We collaborate with leading industry associations, including the China Magnesium & Materials Association (CMMA), where we serve as the Chair of the International Exchange Committee, as well as the Magnesium Oxide Building Products Association (MgOBPA) and the Magnesium Oxide Cement Association (MOCA).
Guided by our commitment to innovation and sustainability, we provide high-performance materials that support the future of green construction.
Magnesium Oxide Wall Board offers unmatched performance with its fire resistance, lightweight and high-strength structure, moisture and mold protection, and superior durability-making it a better choice than traditional materials like gypsum, cement, and wood-based boards.
Fire Retardant Board is a mineral matrix engineered board designed to contain a fire within a compartment of a building by acting as a barrier to stop the spread of heat, smoke, fire and gases. It can be used for steel protection, walls, ceilings, ducts, concrete protection and sealing penetrations and voids.
Fireproof wall board, also known as fire-resistant wall board or fire-rated wall board, is a type of building material designed to resist the spread of fire and provide some level of protection in case of a fire. It is commonly used in construction to create fire-resistant partitions, walls, and ceilings.
Magnesia boards are used in place of traditional gypsum drywall as wall and ceiling covering material and sheathing.
The non-combustible property of magnesium oxide board comes from its inorganic mineral components and stable structure.
Decorative panels, with magnesium oxide board as the base material, are widely used in interior decoration industry. These panels are extensively used in high-end residential, commercial and industrial projects for interior decoration.
As a sheathing board, magnesium oxide board has core competitiveness in non-combustibility, water and corrosion resistance, and structural stability, while also being convenient for construction and environmentally friendly.
Magnesium oxide board demonstrates good mildew-proof characteristics due to its unique advantages. Its alkaline nature resulting from the main raw materials is not conducive to the growth of mold.
As the new generation of inorganic eco-friendly building materials, MGO Exterior Deck boards have become the preferred material for outdoor walkways, scenic platforms, and other outdoor construction projects due to their lightweight strength, fire resistance, moisture protection, and weather resistance.
Fireproof Magnesium Oxide (MgO) Board Backer Board is a purpose-built substrate crafted to serve as a reliable foundation for decorative and protective finishes in residential, commercial, and industrial settings. Formulated with high-purity magnesium oxide (MgO), alkali-resistant fiberglass mesh reinforcement, and a food-grade magnesium chloride binding agent, this board is designed to support tile, stone, laminate, or paint while delivering exceptional fire protection, moisture resistance, and structural rigidity.
Advantages of Fireproof Magnesium Oxide Board Backer Board
① Top-Tier Non-Combustible Performance
Classified as Euroclass A1 (EN 13501) and ASTM E119 Class A, this board is fully non-combustible, emitting no toxic fumes or flame spread even when exposed to temperatures up to 1300°C.
Serves as an effective fire barrier in wall assemblies, protecting structural elements and slowing fire propagation-ideal for fireplace surrounds, commercial kitchen walls, and fire-rated partitions.
Maintains structural integrity during fire incidents, avoiding collapse and preserving the stability of applied finishes (e.g., tile, stone).
② Exceptional Moisture & Mold Resilience
The inert MgO matrix creates a water-repellent structure, with a 24-hour water absorption rate of ≤ 7%-far lower than cement backer board (12–15%) or gypsum-based substrates.
Resists mold, mildew, and rot in perpetually humid environments (showers, saunas, laundry rooms), eliminating the risk of substrate degradation that leads to finish failure.
Compatible with all waterproofing membranes (liquid-applied, sheet membranes) to enhance moisture protection in wet areas.
③ Superior Tile & Finish Adhesion
Features a textured surface profile that optimizes bonding with tile adhesives, thinset mortars, and grouts-ensuring permanent adhesion without the need for additional priming.
Low shrinkage rate (≤ 0.2%) prevents gaps between the backer board and finish, avoiding tile cracking or lifting over time.
Supports heavy finishes (natural stone, large-format tiles) with a high shear strength (≥ 1.5 MPa), making it suitable for floor-to-ceiling tile installations.
④ Robust Impact & Structural Rigidity
Dense composition (1.4–1.7 g/cm³) and dual-layer fiberglass reinforcement deliver exceptional impact resistance (≥ 10 J) and flexural strength (≥ 5.5 MPa).
Resists warping, bowing, or deformation under structural stress, maintaining a flat surface for consistent finish application.
Provides stable support for wall-mounted fixtures (vanities, cabinets, shelving) when properly fastened to framing.
⑤ Eco-Conscious & Healthy Construction
Free of formaldehyde, asbestos, VOCs, and heavy metals, meeting strict environmental standards (LEED, CARB P2, E0-Class).
Manufactured from abundant, naturally occurring minerals (MgO) with a low carbon footprint-100% recyclable at the end of its service life.
Safe for indoor air quality, making it suitable for homes, schools, hospitals, and senior living facilities.
⑥ Hassle-Free Installation & Versatility
Lightweight design (6–16 kg/m² for 6–15mm thickness) reduces labor strain compared to heavy cement backer boards, simplifying transport and handling.
Easily cut, drilled, and shaped with standard tools (circular saws, drills) without generating harmful dust-accelerating installation timelines.
Compatible with all common wall framing systems (wood studs, steel studs, concrete masonry) and finish materials (ceramic tile, porcelain tile, natural stone, paint, wallpaper).
Available in standard sizes (1220×2440mm, 1200×2400mm) and customizable thicknesses (6mm–15mm) to fit project-specific needs.
⑦ Long-Lasting Resilience & Cost Savings
Service life exceeds 45 years under normal use, outperforming cement backer board (25–30 years) and gypsum board (10–15 years).
Resists insect infestation, corrosion, and chemical damage, eliminating the need for frequent replacements or repairs.
Reduces long-term maintenance costs, as it requires no periodic sealing or treatment to preserve performance.
Fireproof Magnesium Oxide Board Backer Board
Technical Specifications
|
Parameter |
Value |
Standard Reference |
|
Core Formulation |
High-purity MgO, alkali-resistant fiberglass mesh, food-grade MgCl₂ |
- |
|
Thickness Options |
6mm, 8mm, 10mm, 12mm, 15mm (customizable) |
- |
|
Density |
1.4–1.7 g/cm³ |
GB/T 5486 |
|
Flexural Strength |
≥ 5.5 MPa |
GB/T 17671 |
|
Compressive Strength |
≥ 32 MPa |
GB/T 17671 |
|
Water Absorption (24h) |
≤ 7% |
GB/T 4100 |
|
Fire Rating |
Euroclass A1 / ASTM E119 Class A |
EN 13501 / ASTM E119 |
|
Shear Strength (Tile Bond) |
≥ 1.5 MPa |
ANSI A118.9 |
|
Formaldehyde Emission |
≤ 0.04 mg/m³ (E0-Class) |
GB/T 18580 / CARB P2 |
|
Temperature Resistance |
-55°C to 95°C |
- |
|
Standard Dimensions |
1220×2440mm, 1200×2400mm (customizable) |
- |
Installation Best Practices (Backer Board-Specific)
- Substrate Preparation: Ensure wall framing or base substrate is level, plumb, and structurally sound. Clean surfaces of dust, grease, or moisture-repair any gaps or irregularities before installation.
- Board Placement: Install boards vertically (for wall applications) with the textured side facing outward (optimizing finish adhesion). Leave a 3mm expansion gap between boards and a 5mm gap at floor/wall intersections to accommodate thermal movement. Stagger vertical seams between adjacent rows for enhanced stability.
- Fastening Protocol: Use corrosion-resistant screws (stainless steel or hot-dipped galvanized) with a minimum length of 30mm. Space screws 120mm apart along board edges and 200mm apart in the field. Drive screws flush with the board surface (avoid over-tightening to prevent cracking) and ensure full penetration into framing (≥ 15mm for wood studs, ≥ 10mm for steel studs).
- Seam & Edge Treatment: For wet areas (showers, tub surrounds), apply a waterproofing membrane over all seams and fastener heads. Fill board gaps with polymer-modified thinset mortar and embed fiberglass mesh tape to create a smooth, crack-resistant surface for tiling.
- Finish Preparation: Allow installed backer board to acclimate to job site conditions for 24 hours before applying finishes. For tile installations, use a polymer-modified thinset mortar compatible with MgO substrates-follow manufacturer guidelines for coverage and curing time.
Key Application Scenarios of Fireproof Magnesium Oxide Board Backer Board
- Residential Spaces: Shower walls, bathtub surrounds, kitchen backsplashes, fireplace surrounds, laundry rooms, and basement walls.
- Commercial Buildings: Restaurant kitchens, hotel bathrooms, hospital corridors, retail store interiors, and fire-rated partitions.
- Specialty Projects: Wet labs, saunas, swimming pool changing rooms, modular buildings, prefabricated bathrooms, and high-humidity industrial areas.
- Renovation Work: Replacement of damaged gypsum or cement backer boards to improve moisture resistance and fire safety.
As a leading manufacturer of specialized MgO building materials, we distinguish ourselves with:
Finish-Focused Engineering: Our backer board is optimized for tile and stone adhesion, with a surface texture and composition tailored to prevent finish failure.
Rigorous Quality Assurance: Each batch undergoes 15+ quality inspections (including fire resistance, moisture absorption, and adhesion tests) and holds certifications from SGS, Intertek, and ANSI.
Customization Flexibility: We offer tailored thicknesses, sizes, and surface treatments (e.g., extra-textured for heavy tiles) to meet unique project requirements.
Global Code Compliance: Fully aligned with international standards (EN 13501, ASTM E119, ANSI A118.9) for seamless integration into global construction projects.
End-to-End Support: Provide detailed installation manuals, on-site technical training, and a 20-year product warranty-backed by 25+ years of expertise in specialty building substrates.
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