Technical Guidance

Fire Protection Boards vs Calcium Silicate Boards

Written by FGF Technical | Aug 3, 2026, 1:07:12 PM

Understanding the Differences and Choosing the Right Solution

Author: FGF Technical

Introduction

Fire protection boards and calcium silicate boards are both widely used within passive fire protection systems, but they are not the same product.

While calcium silicate boards are one type of fire protection board, the term fire protection board covers a broader range of specialist materials designed to protect buildings during a fire.

Understanding the differences between these products is important when selecting the most appropriate solution for structural steel protection, compartmentation, shaft walls or other fire-resistant construction.

What Is a Fire Protection Board?

Fire protection board is a general term used to describe specialist boards designed to provide fire resistance within buildings.

These products are commonly used to:

  • Protect structural steelwork
  • Form fire-rated walls and ceilings
  • Create service risers and shaft walls
  • Improve compartmentation
  • Protect escape routes

Fire protection boards may be manufactured from different materials, each offering unique performance characteristics.

What Is a Calcium Silicate Board?

Calcium silicate boards are manufactured using calcium silicate compounds to create a dense, durable and non-combustible board.

They are widely specified where excellent fire resistance, dimensional stability and long-term durability are required.

Calcium silicate boards are commonly used within:

  • Structural steel protection
  • Fire-rated partitions
  • Service risers
  • Plant rooms
  • High-temperature applications
  • Industrial environments

Key Differences

Although calcium silicate boards are a type of fire protection board, there are several important differences to consider.

Fire Protection Boards Calcium Silicate Boards
General product category Specific board type
Manufactured from a range of materials Manufactured from calcium silicate
Performance varies depending on product Excellent dimensional stability and fire resistance
Wide range of applications Often specified for demanding fire protection applications
Available from numerous manufacturers Available from specialist manufacturers

Which Should You Specify?

The correct product depends on the requirements of the project.

Consider factors such as:

  • Required fire resistance period
  • Building type
  • Internal or external environment
  • Moisture exposure
  • Impact resistance
  • Installation method
  • Compatibility with the tested construction

Products should always be selected as part of a tested passive fire protection system and installed in accordance with manufacturer guidance.

The Benefits of Off-Site Fabrication

Many fire protection boards, including calcium silicate boards, can be precision fabricated before delivery.

Factory fabrication provides several advantages:

  • Reduced site cutting
  • Faster installation
  • Improved dimensional accuracy
  • Less material waste
  • Better quality control
  • Greater programme certainty

FGF manufactures fire protection boards using CNC machining, producing project-specific components ready for installation.

How FGF Supports Fire Protection Projects

FGF supplies a wide range of fire protection boards from leading manufacturers, including calcium silicate board systems for demanding passive fire protection applications.

Our services include:

  • Technical product guidance
  • Manufacturer support
  • Precision CNC machining
  • Cut-to-size fabrication
  • Service penetrations
  • Nationwide delivery

By combining specialist products with precision fabrication, FGF helps contractors improve installation efficiency while maintaining consistent quality.

Related Technical Guidance

  • What Are Fire Protection Boards?
  • Fire Protection for Structural Steel
  • What Are Calcium Silicate Boards?

 

Need Technical Advice?

Whether you're protecting structural steel within a commercial development or specifying passive fire protection for a complex construction project, FGF can provide technical guidance, specialist fabrication and nationwide supply.

Contact our team to discuss your project requirements.