Premium Strong MgO Board Subfloor Flooring Fireproof A1 Class 16-20mm Thickness
As a new type of environmentally friendly building material, magnesium oxide board flooring is gaining increasingly widespread application in the construction and decoration fields due to its excellent fire resistance, water resistance, moisture resistance, as well as high strength, environmental health, and convenient installation advantages.
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Product Introduction
Premium Strong MgO Board Subfloor Flooring Fireproof A1 Class 16-20mm Thickness
Premium Strong MgO Board Subfloor Flooring is a high-performance inorganic building panel tailored for floor substrate systems, with a thickness range of 16–20mm and certified A1 Class Non-Combustible fire rating. It is formulated with high-purity magnesium oxide (MgO), food-grade magnesium chloride, and reinforced with double-layer alkaline glass fiber mesh. Through advanced autoclave curing technology, it forms a dense and stable magnesium oxychloride crystal structure. This board is engineered to meet the strict requirements of floor substrates for load-bearing capacity, fire safety, moisture resistance, and dimensional stability, making it an ideal alternative to traditional plywood, particleboard, and gypsum board subfloors.
Advantages of Premium Strong MgO Board Subfloor Flooring Fireproof A1 Class 16-20mm Thickness
01/ A1 Class Fireproof Performance (Core Advantage For Floor Safety)
It meets top non-combustible fire standards. It won't burn, catch fire, or give off toxic smoke even when it's really hot. It stays strong enough to support the floor for a long time during a fire, helping people evacuate safely. It's safe for places that need strict fire protection.
02/ High Strength & Heavy Load-Bearing Capacity
It's much stronger than traditional floor materials. Its thickness is perfect for floors, so it can hold heavy things like furniture and people walking on it without sagging or getting damaged. It's also resistant to hits from heavy objects, which saves money on maintenance.
03/ Waterproof & Moisture-Proof Performance
It has a tight structure that keeps water out completely, and it's treated to be even more waterproof. It won't swell, soften or warp in damp places like basements or coastal areas. It also doesn't get moldy or infested by termites, so it lasts longer.
04/ Excellent Dimensional Stability
It doesn't expand or shrink much when the temperature changes, so the floor won't crack or warp and separate from the surface. It's evenly dense all over, which prevents the floor from making squeaking noises.
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Rich Experience
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With rich experience and one-to-one service,we can help you choose products and answer technical questions.
Premium Strong MgO Board Subfloor Flooring Fireproof A1 Class 16-20mm Thickness
Technical Specifications
| Parameter | 16mm Thickness | 18mm Thickness | 20mm Thickness | Test Standard |
|---|---|---|---|---|
| Density | 1000–1100 kg/m³ | 1050–1150 kg/m³ | 1100–1200 kg/m³ | ASTM C642 |
| Flexural Strength | ≥18 MPa | ≥20 MPa | ≥22 MPa | GB/T 7019 |
| Compressive Strength | ≥35 MPa | ≥40 MPa | ≥45 MPa | GB/T 7019 |
| Water Absorption | ≤15% | ≤14% | ≤13% | GB/T 7019 |
| Fire Rating | A1 Class Non-Combustible | A1 Class Non-Combustible | A1 Class Non-Combustible | EN 13501-1 |
| Fire Resistance Duration | ≥120 min | ≥150 min | ≥180 min | ASTM E119 |
| Dimensional Stability (Dry-Wet Cycle) | ≤0.2% | ≤0.18% | ≤0.15% | GB/T 7019 |
| Standard Size | 1220×2440mm, 1200×2400mm (customizable) |
Application Scenarios of Premium Strong MgO Board Subfloor Flooring Fireproof A1 Class 16-20mm Thickness
1. Residential Buildings
Subfloor for solid wood flooring, laminate flooring, SPC flooring, and vinyl flooring in living rooms, bedrooms, kitchens, and bathrooms.
Basement and ground floor floor substrates, solving moisture-induced floor deformation problems.
2. Commercial & Public Spaces
Subfloors for shopping malls, office buildings, hotels, and hospitals-meeting high fire safety and wear resistance requirements.
Substrates for sports venues, kindergartens, and elderly care facilities, with good impact resistance and environmental safety.
3. Industrial & Special Spaces
Light industrial workshops, storage warehouses, and logistics centers with light equipment load requirements.
Coastal high-humidity areas and regions with frequent rainy weather, avoiding floor decay and mold issues.
Premium Strong MgO Board Subfloor Flooring Fireproof A1 Class 16-20mm Thickness
Installation & Construction Points
1. Base Preparation: Ensure the ground is flat, clean, and dry; the flatness error should be ≤3mm/2m.
2. Laying Method: Adopt dry laying or adhesive bonding. For dry laying, use cement mortar to level the base first; for adhesive bonding, use special inorganic adhesives to fix the board.
3. Fixing Requirements: Use corrosion-resistant self-tapping screws (spacing 200–300mm) to fix the board to the keel or ground; leave a 3–5mm expansion joint between boards to adapt to temperature changes.
4. Seam Treatment: Fill the joints with waterproof sealant or joint compound, then paste fiberglass tape to enhance integrity and prevent water seepage.
5. Seam Treatment: Fill the joints with waterproof sealant or joint compound, then paste fiberglass tape to enhance integrity and prevent water seepage.
Premium Strong MgO Board Subfloor Flooring Fireproof A1 Class 16-20mm Thickness
Product Advantages vs. Traditional Subfloor Materials
| Property | Premium MgO Subfloor Board | Plywood Subfloor | Gypsum Board Subfloor |
|---|---|---|---|
| Fire Rating | A1 Class Non-Combustible | B3 Class Combustible | B1 Class Flame-Retardant |
| Load-Bearing Capacity | High (resists heavy loads) | Medium (prone to sagging) | Low (not suitable for direct flooring) |
| Waterproof Performance | Excellent (no swelling) | Poor (prone to decay) | Poor (softens when wet) |
| Mold & Insect Resistance | Excellent | Poor (termite-prone) | Poor (mold-prone) |
| Environmental Safety | Formaldehyde-free, non-toxic | May contain formaldehyde | Low formaldehyde emission |
| Service Life | 50+ years | 5–10 years | 3–8 years |
Our Factory
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.
FAQ
Q: What is Premium Strong MgO Board Subfloor Flooring (16-20mm thickness)?
Q: What fire resistance performance does this MgO subfloor board have?
Q: How strong is the load-bearing capacity of the 16-20mm MgO subfloor board?
Q: Can this MgO subfloor board be used in high-humidity environments?
Q: What are the main application scenarios of this MgO subfloor board?
Q: How to install this MgO subfloor board?
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