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.

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:
Yes, calcium silicate board is a Class A1 non-combustible material with excellent fire performance. Its fireproof capabilities are evident in several aspects:
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.
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.
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.
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:
In short, CE-certified calcium silicate boards provide trusted, internationally validated fire protection.
| 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.
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Firebird calcium silicate boards are extensively used in the following sectors:
To ensure safety and performance, consider the following criteria when selecting calcium silicate boards:
Firebird offers one-stop solutions from product selection to technical consultation.
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
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