Insulation Refractory

Is calcium silicate board fireproof?

Release Time: 2025-05-16
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With rising safety standards in industrial and construction sectors, the selection of fireproof materials has become increasingly critical. As a commonly used thermal insulation and fire protection solution, calcium silicate board frequently prompts the question: Is calcium silicate board fire-resistant? This article will answer this in detail, based on technical data and CE certification of Firebird’s calcium silicate boards.

1. What Is Calcium Silicate Board?

Calcium silicate board is a hard, asbestos-free insulation material composed of silica, lime, reinforcing fibers, and other additives, manufactured through high-temperature and high-pressure autoclaving. It features low thermal conductivity, high compressive strength, excellent fire resistance, water resistance, and easy workability.

Firebird offers a wide range of calcium silicate boards for various applications:

  • 1000℃ Boards: General-purpose high-temperature insulation and fire protection.
  • 1100℃ Boards: Designed for more demanding thermal environments.
  • High-Density Boards: Machinable into precision parts for ladles, aluminum channels, etc.
  • Water-Resistant Boards: Suitable for humid or outdoor insulation systems.

Calcium Silicate Board

2. Does Calcium Silicate Board Offer Fire Resistance?

Yes, calcium silicate board is a Class A1 non-combustible material with excellent fire performance. Its fireproof capabilities are evident in several aspects:

2.1 Non-Combustible Composition

Made primarily of silica and calcium oxide, calcium silicate board does not burn or emit toxic fumes, nor does it melt or drip under fire exposure. It retains its structural integrity in high-temperature conditions.

2.2 Superior Thermal Insulation

With low thermal conductivity—for instance, ≤0.105 W/m·K at 400°C for the FCS-25 model—it effectively blocks heat transmission and delays fire spread.

2.3 International Fire Standards Compliance

Firebird calcium silicate boards are CE certified according to EN 13501-1, which assesses reaction to fire performance, smoke release, heat release, and flaming droplets.

ce of Calcium Silicate Board

3. What Does CE Fire Certification Mean?

The CE mark signifies that a product complies with European health, safety, and environmental protection standards. For fireproof materials, this includes rigorous testing of combustibility, smoke production, thermal emissions, and dripping behavior.

With CE certification, Firebird’s calcium silicate boards are recognized for:

  •  Class A1 non-combustibility
  •  Consistent fire safety performance
  •  Market access across Europe and CE-adopting regions
  •  Compliance with regulated quality assurance systems

In short, CE-certified calcium silicate boards provide trusted, internationally validated fire protection.

Calcium Silicate Board

4. Key Technical Data (Example: FCS-25 Model)

Property Unit Value
Bulk Density kg/m³ 250 ±10%
Compressive Strength (5% deformation) MPa ≥1.0
Flexural Strength MPa ≥0.55
Maximum Service Temperature 1000
Linear Shrinkage (1000℃ × 16h) % ≤2.0
Thermal Conductivity (400℃) W/m·K ≤0.105
SiO₂ Content % ≥55
CaO Content % ≥36

These parameters confirm the board’s high thermal stability and excellent insulation efficiency under fire exposure.

🔗 View full product range & technical specifications

5. Fire Applications: Broad Industry Coverage

Firebird calcium silicate boards are extensively used in the following sectors:

 Construction

  • Fire-resistant partition walls and ceilings
  • Core materials for fire doors and escape routes
  • Passive fireproofing for steel structures

 Industrial Plants

  • Cement kilns, glass furnaces, steel mill walls
  • Boiler insulation in power plants
  • Petrochemical pipe insulation and fire barrier modules

 Special Environments

  • Subways and tunnels
  • Cable tray fire sealing systems
  • Marine and offshore platforms

Calcium silicate board for elevator fire doors

6. How to Choose a Truly Fireproof Calcium Silicate Board?

To ensure safety and performance, consider the following criteria when selecting calcium silicate boards:

  •  CE fire certification and third-party test reports
  •  Proven expertise and application guidance from the manufacturer
  •  Complete technical documentation
  •  Suitable density, thickness, and surface quality for the project

Firebird offers one-stop solutions from product selection to technical consultation.

Calcium Silicate Board

7. Conclusion: Choose Certified Fire Safety with Confidence

Is calcium silicate board fireproof? Absolutely. With CE certification, high-temperature resistance, and industry-proven performance, Firebird calcium silicate boards are a trusted solution for fire protection and thermal insulation.

We are committed to providing high-quality, high-performance, and high-safety refractory materials for customers worldwide. Reach out today for samples or technical support.

📧 Email: sns@firebirdref.com
📞 Tel: +86 371 86541085
🌐 Website: www.firebirdref.com

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