Our calcium silicate board 4x8 is a high-performance, eco-friendly construction panel engineered from reinforced fibers, siliceous materials, and calcareous materials through a high-temperature, high-pressure autoclaving process. Measuring the standard international size of 4ft x 8ft (1220mm x 2440mm), this board is 100% asbestos-free and designed to replace traditional gypsum and plywood boards in demanding commercial, industrial, and residential projects.
Key Features & Advantages
100% Asbestos-Free & Eco-Friendly: Manufactured without asbestos, formaldehyde, or harmful volatile organic compounds (VOCs), ensuring safe indoor air quality and compliance with strict green building standards.
Superior Fire Resistance (Class A1): Non-combustible material tested to EN 13501-1 / ASTM E84 standards. It does not burn, emit toxic smoke, or lose structural integrity during a fire, providing up to 4 hours of fire protection in partition systems.
Excellent Moisture & Water Resistance: Unlike standard gypsum boards, our 4x8 calcium silicate board will not swell, warp, or crumble in high-humidity environments such as bathrooms, kitchens, basements, and coastal areas.
High Strength & Impact Resistance: Autoclaved curing gives the board exceptional flexural strength and screw-holding capacity, making it durable against daily wear and heavy loads.
Sound Insulation & Thermal Conductivity: Effectively reduces airborne noise transmission between rooms while offering low thermal conductivity to improve building energy efficiency.
Easy to Cut & Install: Can be easily scored and snapped or cut with standard woodworking tools, allowing fast installation on steel or wooden framing.
Technical Specifications
| Specification Item | Standard Parameter / Value |
|---|---|
| Product Name | Calcium Silicate Board 4x8 |
| Standard Dimensions | 4' x 8' (1220mm x 2440mm) / Custom sizes available |
| Thickness Range | 4mm, 6mm, 8mm, 9mm, 10mm, 12mm, 15mm, 18mm, 20mm, 24mm |
| Density | Medium Density: 1.0 – 1.2 g/cm³ / High Density: 1.3 – 1.5 g/cm³ |
| Fire Rating | Non-combustible Class A1 (GB8624 / EN 13501-1) |
| Bending Strength | ≥ 11 MPa (Dry) / ≥ 8 MPa (Saturated) |
| Moisture Movement | ≤ 0.25% |
| Thermal Conductivity | ≤ 0.20 W/(m·K) |
| Asbestos Content | 100% Asbestos Free |
| Edge Type | Square Edge (SE) / Tapered Edge (TE) |
Common Applications
Thanks to its versatility and durability, our calcium silicate board 4x8 is widely used across multiple construction sectors:
Interior Partition Walls: Ideal for offices, hotels, hospitals, schools, and shopping malls requiring high fire and acoustic ratings.
Suspended Ceilings: Lightweight 4mm–6mm boards prevent sagging in humid climates.
Wet Area Backing: Perfect tile backer board for bathrooms, shower rooms, kitchens, and swimming pool facilities.
Fire-Rated Enclosures: Used for steel structure fireproofing, smoke exhaust ducts, and electrical cable shafts.
Exterior Cladding & Soffits: High-density (12mm+) boards serve as durable substrates for exterior wall insulation systems (EIFS) and eaves.
Packaging & Container Loading
To ensure zero damage during long-distance ocean freight, all boards are strictly inspected and packed on heavy-duty wooden pallets:
Pallet Packaging: Stacked neatly on fumigation-free plywood pallets, protected with corner guards, wrapped in waterproof plastic film, and secured with high-tensile PET/steel straps.
Frequently Asked Questions (FAQ)
Q1: What is the difference between calcium silicate board and cement board?
A: While both are durable and moisture-resistant, calcium silicate board is autoclaved under high pressure, making it lighter, smoother on the surface, easier to cut, and better at thermal and fire insulation compared to standard fiber cement board.
Q2: Can I get free samples before placing a bulk order?
A: Yes, we provide free A4-size samples so you can test the density, strength, and fire resistance. You only need to cover the international courier cost, which will be refunded upon your first order.
Q3: What is your MOQ and delivery lead time?
A: Our standard MOQ is 1x20ft container (mixed thicknesses are acceptable). For regular 4x8 sizes, production lead time is typically 7–15 days after deposit receipt.
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