Fire Cavity Barriers
At Facilities Fire, we ensure every cavity, void, and structure in your building is fully protected and compliant.
What are fire cavity barriers?
Fire cavity barriers are an essential part of passive fire protection, designed to stop fire and smoke from spreading through concealed areas within a building. These hidden spaces – which include wall cavities, ceiling voids, roof structures, service risers, and floor voids – can allow fire to travel rapidly and undetected if not properly protected.
By installing cavity fire barriers, you can ensure these concealed areas remain secure, maintain compartmentation, and slow the spread of smoke and heat. This helps protect escape routes, safeguard structural integrity, and ensures occupants have the time they need to evacuate safely.
Whether you require protection in a new-build project, a refurbishment, or an existing structure, a correctly installed fire barrier is vital for achieving full building compliance and resilience.
Types of fire cavity barriers we install
We can supply and install a wide range of third-party certified fire cavity barriers, each designed to meet different construction needs, fire ratings, and regulatory requirements.
Our product range includes:
- Open-state cavity barriers – These are designed for ventilated cavities to allow airflow under normal conditions, but expand under heat to seal gaps during a fire.
- Rigid cavity barriers – Encompassing solid boards or batts that are fixed in position, these maintain fire compartment lines in walls and floors.
- Flexible fire barriers – These are versatile solutions for uneven surfaces, tight spaces, and areas requiring movement tolerance.
- Smoke barriers – These focus on restricting smoke movement in ceiling voids, roof spaces, and service corridors.
- Fire-stopping cavity barriers – These high-performance systems are designed to reinstate fire resistance in construction cavities and voids.
Each barrier type is selected based on cavity size, construction materials, ventilation needs, and the required fire performance rating (typically 30, 60, 90, or 120 minutes). All products are third-party approved, ensuring verifiable performance and compliance with current UK building regulations.
Our fire cavity barrier installation services
As a trusted fire protection provider, we deliver complete fire cavity barrier installation services – from initial survey to final certification.
Our service includes:
- Technical surveys and site assessments to identify unprotected cavities, breaches, and compliance gaps.
- Specification and product selection based on building layout, materials, and fire strategy.
- Professional installation in adherence to BS 9991, BS 9999, BS 476, and EN 1366 by our trained fire stopping and barrier specialists.
- Integration with other passive fire protection systems, including fire stopping, compartment walls, and fire doors.
- Quality assurance, including photographic evidence, inspections, and third-party certified materials.
- Full documentation and sign-off to demonstrate compliance with the Regulatory Reform (Fire Safety) Order 2005.
Every installation is completed to industry best practice to ensure long-term performance and traceable compliance for building control, insurers, and responsible persons.
Fire barriers for specialist environments
At Facilities Fire, we deliver expert fire barrier solutions across a wide range of commercial and high-risk environments, with specialist experience in technically complex or operationally sensitive sites.
We support:
- Data centres and server rooms
- Offices and commercial buildings
- Warehouses and logistics centres
- Healthcare, education, retail, and hospitality
Our engineers are experienced in dealing with challenging access conditions, intricate service routes, and mixed construction materials, ensuring the correct cavity barrier is installed in the right location for maximum safety and compliance.
You may also be interested in…
If you’re looking for professional fire barrier installation, remedial works, or multi-site passive fire protection support, be sure to contact our specialist team today. We’ll help you ensure every cavity, void, and structure in your building is fully protected and compliant.
01296 615700
