Technical Guidance
Calcium silicate boards are widely used in construction where fire performance and thermal stability are critical. Designed for use in fire-rated systems and high-temperature environments, these boards provide a reliable solution for protecting structural elements and maintaining compartmentation within buildings.
They are commonly specified across commercial, residential and industrial projects, particularly where enhanced fire resistance is required.
Calcium silicate boards are non-combustible building boards manufactured from a combination of mineral-based materials, typically including calcium, silica and reinforcing fibres.
This composition creates a dense, stable board that can perform under elevated temperatures, making it suitable for fire protection and specialist construction applications.
Calcium silicate boards are widely used within fire-rated systems to help achieve specified fire resistance periods when installed as part of tested constructions.
These boards maintain their integrity at high temperatures, making them suitable for use in demanding environments.
They are resistant to warping, shrinking and cracking, helping maintain performance over time.
Calcium silicate boards can perform in environments where moisture may be present, depending on system design.
Calcium silicate boards are used in a range of fire protection and high-performance applications, including:
Correct specification will depend on the required fire rating, system design and installation conditions.
One of the primary uses of calcium silicate boards is in fire protection systems designed to maintain compartmentation and protect structural elements.
For example:
These systems must be designed and installed in accordance with tested assemblies and manufacturer guidance.
To achieve the intended performance, calcium silicate boards should be:
Poor installation or incorrect specification can affect system performance and compliance.
Compared to general-purpose building boards, calcium silicate boards are specifically engineered for fire protection and high-temperature applications.
While other boards may offer durability or moisture resistance, calcium silicate boards are typically selected where fire performance and thermal stability are the primary requirements.
Calcium silicate boards are commonly used to support compliance with UK building regulations relating to fire safety. Performance should always be verified using:
Early coordination during design and specification is important to ensure compliance.
Calcium silicate boards provide a reliable solution for fire protection and high-temperature construction applications. Their stability, durability and performance make them a key component within many fire-rated systems.
Correct specification, system design and installation are essential to ensure long-term performance and regulatory compliance.
FGF supplies calcium silicate and high-temperature boards alongside fire protection systems, insulation and building envelope materials.
Talk to our team for guidance on product selection, system compatibility and project requirements.