Moisture Proof MGO Tile Backer Board For Bathroom
Whether for residential bathrooms or large-scale commercial projects, our Moisture Proof MGO Tile Backer Board delivers unmatched waterproof performance, structural stability, and health safety—redefining the standard for bathroom tile substrates in the global market.
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Product Introduction
Moisture Proof MGO Tile Backer Board for Bathroom
Moisture Proof MGO (Magnesium Oxide) Tile Backer Board is a high-performance inorganic building panel specifically engineered for bathroom tile installation. Designed to address the core pain points of bathroom environments-excessive moisture, mold growth, tile detachment, and water damage-it serves as a stable, waterproof substrate that ensures long-term durability of tile surfaces. Made from natural magnesium oxide, magnesium sulfate, reinforced fibers, and moisture-resistant additives, this board outperforms traditional materials like cement backer board, gypsum board, or plywood in humid conditions, making it the preferred choice for residential, commercial, and hospitality bathroom projects worldwide.
Advantages of Moisture Proof MGO Tile Backer Board for Bathroom
1 Waterproof & Moisture-Proof
It is fully waterproof and can be used directly in wet bathroom areas like shower and bathtub zones. No extra waterproof treatment is needed. It stays unaffected in humid conditions and effectively stops moisture seepage, mold and structural damage.
2 Stable, Crack-Proof Perfect Tile Base
The board features great dimensional stability and won't easily expand or shrink with temperature and humidity changes. It keeps a flat rigid surface, bonds firmly with tile adhesive, and prevents tile cracks, gaps or falling off for long-term use.
3 Lightweight & Easy Dry Installation
Much lighter than traditional cement boards, it lowers wall and floor load, perfect for high-rise and renovation projects. It can be easily cut, drilled and fixed with regular tools, no wet construction needed and saves lots of installation time.
4 Eco-Friendly & Healthy
Made of pure inorganic materials, it contains no formaldehyde, benzene or harmful volatile substances. It meets international environmental standards and ensures safe, healthy indoor air for enclosed bathroom spaces.
5 Fireproof & Long Lasting
It is non-combustible with excellent fire resistance to improve building safety. The board is mold-proof, termite-proof and corrosion-resistant, never rotting or deforming in damp environments and serves reliably for decades with little upkeep.
6 Universal Compatibility & Chemical Resistant
It bonds perfectly with all kinds of tiles including ceramic, porcelain, natural stone, glass and mosaic tiles, and works well for large and heavy tiles. It also withstands daily bathroom cleaning chemicals without discoloration or surface damage.
Our Company
We are a company dedicated to magnesia cement products. Our main products are Magnesium Oxide Boards (MGO Board) for construction and laminated MgO boards for furniture and renovation. Our mission is to provide the world's construction markets with environmentally friendly, high-performance and sustainable green materials.
We work with China Magnesium Materials Association (CMMA) and Magnesium Oxide Association (MOCA) in North America to raise awareness and promote the use of magnesium oxide cement products. We focus on the quality control and consistency of the MGO products. We have been actively involved in developing American Society for Testing and Materials (ASTM) standards related with MGO products.
Magnesium oxide wall board is a technologically advanced building material that offers superior performance in every category when compared to traditional wood, gypsum and cement based products.
Magnesium Oxide Wall Panels are cementitious substrate products reinforced with magnesium oxide fibre matting.
Fire resistant magnesium oxide wallboard is a new type of refractory material. It is widely used primarily as a wallboard alternative to conventional gypsum-based drywall and plywood.
It is non combustible and fire rated Class A1. With options for up to a 2 hour fire resistance, MgO Board offers an innovative passive fire protection alternative for your construction projects.
MgO board has very good fire performance. It does not spread flames or smoke. It is noncombustible and fire-rated A1, which helps protect homeowners, tenants and building occupants while mitigating damage and loss.
Magnesium oxide wall board is made of magnesium oxide, magnesium sulfate or magnesium chloride, glass fiber mesh, perlite and wood fiber.
It is an upgraded product of fireboard. A properly constructed assembly with our MgO fireproof wall board can achieve a 3-hour fireproof rating.
Fire Resistant Internal Wall Board
Our Fire Resistant Internal Wall Board is a fiberglass reinforced magnesium oxide cement board. It can be used to replace traditional gypsum drywall for wall and ceiling finishes and sheathing.
Fireproof Exterior Wall Panels
Magnesium oxide board is a new type of fire-resistant building material. The main raw materials are magnesium oxide, magnesium chloride/sulfate and perlite.
Core Raw Materials & Moisture-Proof Mechanism of Moisture Proof MGO Tile Backer Board for Bathroom
MgO board is an inorganic composite panel made from a binder system of magnesium oxide (MgO), magnesium chloride (MgCl₂), and water, reinforced with alkali-resistant glass fiber mesh, along with modifiers and fillers, formed through a specialized manufacturing process.
Key Features:
Class A non-combustible, high fire resistance
Lightweight yet high strength, impact-resistant
Moisture-resistant, mold-proof, formaldehyde-free
Dimensionally stable, resistant to warping
The exceptional moisture resistance of MGO tile backer boards stems from its scientific inorganic formulation and structural design, eliminating the risk of water absorption, swelling, or mold growth:
1. Key Raw Materials
High-Purity Magnesium Oxide (MgO): Acts as the core cementitious component, reacting with magnesium sulfate to form a dense, water-insoluble magnesium oxysulfate hydrate crystal structure-impermeable to moisture.
Magnesium Sulfate Solution: Replaces traditional magnesium chloride as the curing agent, avoiding "efflorescence" (white salt deposits) and chloride ion corrosion, while enhancing water resistance.
Reinforced Fibers: Chopped glass fiber or kraft paper fiber is evenly distributed to improve tensile strength and crack resistance, preventing structural damage caused by moisture-induced expansion.
Moisture-Resistant Additives: Special water-repellent agents and mold inhibitors are integrated to reduce water absorption and inhibit the growth of mold, mildew, and bacteria.
Dense Inorganic Matrix: No organic components (e.g., wood fibers, formaldehyde-based binders) that absorb moisture or decompose in humid environments.
2. Moisture-Proof Working Principle
Dense Crystal Structure: The magnesium oxysulfate hydrate crystals form a tight, non-porous matrix that blocks water penetration-unlike porous cement or gypsum boards that absorb moisture over time.
Low Water Absorption: The board's water absorption rate is ≤ 15% (ASTM C1396 standard), and it does not swell, warp, or soften even when exposed to prolonged humidity or direct water splashes.
Mold-Proof Inorganic Composition: Mold and bacteria cannot survive on inorganic surfaces, eliminating the musty odors and health hazards associated with organic-based backer boards.
Specification:
Thickness Standard: 6mm, 8mm, 10mm, 12mm, 15mm (optimal for bathrooms: 10–12mm)
Size Standard: 1220×2440mm (4'×8'), 1220×3050mm (4'×10')
Customization Thickness: 5mm–25mm; Size: Up to 1220×6000mm (MOQ: 1000 pieces)
Density 0.9–1.2 g/cm³
Water Absorption Rate ≤ 15% (ASTM C1396)
Flexural Strength ≥ 8 MPa (dry condition); ≥ 6 MPa (wet condition)
Fire Rating A1-class (ISO 1182, GB 8624)
Environmental Standard E1-class (EN 13986), CARB P2




Bathroom Application Scenarios
Shower Stalls: Full-wall installation (floor to ceiling) for waterproof, mold-proof tile backing.
Bathtub Surrounds: Provides a stable substrate for tiles around bathtubs, preventing water damage to adjacent walls.
Bathroom Floors: Suitable for tile flooring in wet areas, with excellent load-bearing capacity and moisture resistance.
Vanity Backsplashes: Protects walls behind sinks from water splashes and cleaner corrosion.
Wet Rooms: Ideal for fully waterproofed wet rooms (common in European and American markets) due to its IPX7 waterproof rating.
Commercial Bathrooms: Hotels, hospitals, shopping malls, and public restrooms-meeting high standards for durability, hygiene, and fire safety.
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