Fire-Rated Ducts for Cellulosic Fire Protection
Fire-rated duct systems for ventilation, smoke extract and service routes, coordinated with supports, access panels, penetrations and the building’s compartmentation strategy.
Purpose of Fire-Rated Ducts
Designed to control smoke and fire spread through HVAC systems, networks, and fire-rated ducts, they are used in commercial buildings and industrial facilities to protect escape routes and maintain compartmental integrity.
Contain the smoke and flames that spread through the ventilation duct pathways
Protect critical building zones by maintaining fire compartment boundaries
Maintain HVAC system integrity during fire exposure for longer durations
Support safe evacuation by reducing smoke transfer into escape routes
Ceilings Configurations
Transformer Room Fire-Rated Ceiling Systems
Fire Performance and Engineering Capability
- Cellulosic fire curve compliance
- Fire resistance up to defined durations (e.g., EI ratings)
- Structural stability under sustained fire exposure
- Impact and environmental durability
- Combined fire and blast resistance
Integrated Fire Compartmentation
Fire-rated duct systems are engineered to support a coordinated passive fire protection strategy across a building. They integrate with nearby fire-rated walls, floors and shafts to maintain continuous compartment boundaries. This ensures compartment integrity is preserved even where ductwork penetrates critical fire separations.
Fire Dampers & Sealing
To protect fire barriers where duct penetrations occur
Duct Wrapping & Encasement
For maintaining fire resistance without structural duct replacement
Smoke Control Ductwork
To support safe smoke extraction and controlled air movement
Seamless Building Integration
Ensuring compatibility with ceilings, shafts, and wall assemblies
Sectors We Serve
We partner with you to deliver reliable, purpose-built infrastructure that supports your goals and performs where it matters most.
Energy & Utilities
Energy & Utilities
- Power & Grid Infrastructure
- Energy & Process Facilities
- Onshore & Offshore Assets
- Renewables & Energy Transition
Industrial
Industrial
- Chemical & Process Plants
- Manufacturing & Heavy Industry
- Hazardous & Controlled Storage
- Automotive & Industrial Campuses
Transportation
Transportation
- Airports & Aviation Infrastructure
- Metro, Rail & Mass Transit
- Roads, Highways & Vehicular Tunnels
- Ports, Shipyards & Marine Transport
Defence
Defence
- Defence & Command facilities
- Critical National Infrastructure (CNI)
- Secure & Hardened Assets
- Border, Coastal & Strategic Installations
Infrastructure
Infrastructure
- Data Centres & Digital Infrastructure
- Public Venues & Stadia
- Cultural & Institutional Buildings
- Government & Diplomatic Facilities
Commercial/Mixed-Use
Commercial/Mixed-Use
- Hospitality & Leisure
- Financial & Commercial Buildings
- Mixed-Use Landmark Developments
Inputs for Specifying Fire-Rated Ducts for Cellulosic Fire Protection
Use the project brief and coordinated drawings to confirm the following inputs before detailed selection.
Duct function and fire exposure
Confirm whether the duct supports ventilation, smoke extract or another service, together with the relevant cellulosic fire exposure.
Required performance classification
Define the required fire performance from the approved fire strategy and project specification.
Route, dimensions and support layout
Provide the duct route, dimensions, orientation, support positions and relevant wall or floor crossings.
Access, inspection and maintenance
Identify access panels, inspection points and maintenance requirements before the duct protection arrangement is finalised.
Frequently Asked Questions About Fire-Rated Ducts for Cellulosic Fire Protection
Answers to common selection, coordination and evidence questions.
Begin with duct function, fire exposure, required classification, route, dimensions, pressure duty, support layout and access. Clear drawings and acceptance criteria help the technical team assess an appropriate configuration without assuming that one arrangement suits every project.
Review duct joints, access panels, hangers, anchors, wall and floor penetrations and adjoining fire-resisting construction. These details form part of the installed system and should be resolved before fabrication or installation.
Review tested duct, support and penetration details relevant to the proposed dimensions, orientation and operating duty. The evidence should match the proposed materials, dimensions, orientation and interfaces rather than being treated as a general approval for every use.
It may be considered for commercial, industrial and infrastructure buildings where ductwork passes through or serves fire compartments. Final suitability depends on the project brief, site conditions and supporting technical evidence.
Retrofit use may be possible after the existing structure, available space, access and interfaces have been surveyed. The proposed arrangement must then be checked against the project requirement and the evidence available for that configuration.
Provide relevant drawings, duct function, fire exposure, required classification, route, dimensions, pressure duty, support layout and access, along with programme constraints and the documentation required for review. This helps define the scope and identify any information that must be confirmed by the project team.
