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Passive vs Active Fire Protection: What’s the Difference?
Passive and active fire protection perform different roles within a building fire strategy. Passive measures are built into the construction to restrict fire and smoke spread, while active systems detect, warn of or respond to a fire.
Use this guide as a practical introduction, then check the relevant tested system and manufacturer documentation before selecting or installing a product.
Use This Guide
Understand the principle first
Use this guide as a practical introduction, then check the relevant tested system and manufacturer documentation before selecting or installing a product.
Fire Protection Essentials
Quick Guide
Passive and active fire protection perform different roles within a building fire strategy. Passive measures are built into the construction to restrict fire and smoke spread, while active systems detect, warn of or respond to a fire.
Key Points
What You Need to Know
Passive Protection
Built into the construction to help restrict fire and smoke spread.
Active Protection
Detects, warns of or responds to fire.
Compartmentation
Creates fire-resisting areas within the building.
Combined Strategy
Uses complementary measures rather than relying on a single system.
Key Principle
What Is Passive Fire Protection?
Passive fire protection is incorporated into the building fabric and is intended to help maintain fire-resisting compartments. Typical measures include fire-resisting walls and floors, fire doors, cavity barriers and fire stopping around service penetrations.
Examples include fire batts, pipe collars and wraps, intumescent sealants, fire barriers and other tested systems used to protect openings or concealed spaces.
Practical Guidance
What Is Active Fire Protection?
Active fire protection includes systems that detect, warn of, suppress or help people respond to a fire. Examples include fire detection and alarm systems, automatic sprinklers, smoke control systems and portable fire extinguishers.
Some active systems operate automatically, while others require human action. Their purpose differs from passive protection, but the two approaches are commonly designed to work together.
Selection & Application
Why Buildings Need Both
Passive systems can help limit the area affected by a fire, while active systems may provide early warning or suppression. A robust strategy considers the building as a whole rather than relying on a single product or system.
The measures required depend on factors such as building use, design, occupancy, fire strategy and applicable regulatory guidance.
Important Detail
Common Misunderstandings
Passive does not mean unimportant or maintenance-free, and active does not mean more effective in every situation. Fire doors can be damaged, penetrations can be altered and active systems can require testing and servicing.
Both types of protection need to remain appropriate for the building throughout its life.
Relevant Products
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Frequently Asked Questions
Frequently Asked Questions
Passive fire protection is built into the construction to help contain fire and smoke, while active systems detect, warn of, suppress or respond to a fire.
Fire alarm and detection systems are active fire protection because they detect a fire condition and provide a warning or trigger a response.
Fire doors form part of passive fire protection when they are correctly specified, installed and maintained as part of a fire-resisting compartment.
No. Sprinklers and passive fire protection perform different functions. The required combination depends on the building design and fire strategy.
Yes. Fire doors, seals, barriers and penetration seals can be damaged or altered, so they should be managed and maintained appropriately.
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