Passive Fire Protection
Cavity Barriers
Shop open-state and closed-state cavity barrier systems for concealed cavities, facades, walls and roof spaces.
Find passive fire protection systems designed to restrict hidden fire and smoke spread through cavities, including solutions for ventilated facade applications.
Fire Protection Direct
Need help choosing cavity barriers?
Selection can depend on the cavity width, facade or wall construction, ventilation requirement, fixing method and the relevant tested installation detail.
Cavity Barriers
Shop Cavity Barriers
Browse cavity barriers currently available from Fire Protection Direct.
Concealed Cavities
Controlling Hidden Fire Spread
Cavity barriers are passive fire protection products installed within concealed cavities to restrict the unseen spread of fire and smoke.
They are commonly specified within external wall systems, masonry cavities, timber frame construction, roof voids and rainscreen facade systems.
Open-state and closed-state products serve different construction requirements, so the selected system must match the cavity, ventilation strategy and tested application.
Common applications
- Rainscreen facades
- External wall cavities
- Masonry cavity walls
- Timber frame construction
- Roof and concealed voids
Product Guidance
Understanding Cavity Barriers
Open-State Barriers
Designed for applications where a ventilation gap is maintained during normal service and closed during fire conditions in accordance with the tested design.
Closed-State Barriers
Provide a continuous barrier across the cavity where permanent ventilation through the barrier is not required.
Application-Specific
Cavity width, substrate, brackets, ventilation and facade build-up must match the tested system.
Specification
Choosing the Right Cavity Barriers
Check the complete tested application rather than selecting a product from its name or headline fire rating alone.
Cavity Width
Measure the cavity and check the maximum and minimum dimensions permitted by the product.
Wall or Facade Type
Confirm the supporting construction and facade build-up covered by the tested application.
Ventilation Requirement
Determine whether the design requires an open-state or closed-state solution.
Tested Detail
Confirm bracket spacing, joints, orientation and installation against the manufacturer documentation.
Manufacturers
Cavity Barriers Brands
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Related Fire Protection Products
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Technical Guidance
Treat the installation as a complete tested system
Cavity width, substrate, bracket arrangement, ventilation gap, orientation and surrounding construction can all affect the tested performance. Follow the manufacturer installation detail for the specific wall or facade system.
What information should I provide?
If you need help identifying a suitable product, it helps to provide:
- Cavity width
- Facade or wall construction
- Open-state or closed-state requirement
- Bracket and fixing arrangement
- Required fire resistance
Frequently Asked Questions
Cavity Barriers FAQs
Cavity barriers are passive fire protection products installed within concealed cavities to restrict the hidden spread of fire and smoke.
They are commonly used within external wall systems, masonry cavities, timber frame construction, roof voids and rainscreen facade systems.
Open-state products maintain a ventilation gap during normal service and react during fire conditions in accordance with their tested design. Closed-state products form a continuous barrier where ventilation through the barrier is not required.
Many cavity barrier products are specifically designed for ventilated rainscreen facade applications. The exact product must match the tested wall and cavity configuration.
Selection depends on cavity width, wall or facade construction, ventilation requirements, fixing arrangement, required fire resistance and the relevant tested system.
Cavity Barriers
Need help choosing cavity barriers?
Browse the range online or speak to Fire Protection Direct for help locating the relevant product information and manufacturer documentation.
