Cavity barriers

Cavity barriers are a cost-effective way to buy you time in the event of a fire. Time that could save lives and protect your property investment.

We recommend cavity barriers in the ceiling and roof voids, in the external envelope of your building, and horizontally in high-rise buildings in the void between the edge of the concrete slab and the external envelope of the building. Underfloor cavity barriers can also seal the voids between raised access floors and floor slabs.

Here’s what those applications look like.

Ceiling and roof voids

A light, flexible, passive fire-protection option that looks like fabric. We install into the roof void created by suspended and modular ceilings.

Benefits

 

• Lightweight
• Flexible
• Cost-effective
• Fire-resistant up to one hour.

 

Typical applications

 

• Concealed voids
• Retail outlets
• Schools
• Supermarkets
• Loft conversions
• Manufacturing plants.

 

Rainscreen cavity barriers 

 

We use rainscreen cavity barriers in the external envelope or fabric of buildings to ensure the system drains freely and maintains airflow. They provide an effective hot smoke and fire seal.

 

These barriers are made from non-combustible stone wool, within a polythene sleeve. We fit them vertically or horizontally to provide a robust fire, acoustic and thermal barrier within external wall cavities and party walls.

 

Benefits

 

• • Exceeds minimum Building Regulation requirements in concealed wall cavities
  • Resilience – not affected by building movement, shrinkage or thermal change
  • Robust – last as long as the building does
  • Can be used vertically or horizontally

 

• Excellent acoustics – prevent flanking noise transmission

• Up to 60 minutes’ integrity.

 

 

Typical applications

 

• Concealed voids
• Retail outlets
• Schools
• Supermarkets
• Loft conversions
• Manufacturing plants.

 

Slab edge barrier

 

We install slab edge barriers in high-rise buildings horizontally in the void between the edge of the concrete slab and the external envelope of the building.

 

Slab edge barriers are rock-fibre compressible slabs with an ablative coating that offer a fire and smoke seal of up to four hours.

 

Benefits 

• A low-cost barrier
• Fast installation – minimal disruption
• Fully tested
• Up to four hours’ integrity
• Service-capable.

Typical applications

 

• Concealed voids
• Retail outlets
• Schools
• Supermarkets
• Loft conversions
• Manufacturing plants.

 

Underfloor barriers

 

It’s vital to seal the voids between raised access floors and floor slabs to prevent the spread of fire and smoke. We fit barriers designed to provide cost-effective cavity fire stops in these voids. This is a one-piece system that’s fast to cut and install, so you’ll have minimal disruption. These systems offer a tight vertical fit and offer up to 120 minutes of fire resistance. Time enough to get people out and professionals in.

 

Benefits

 

• Cost-effective
• Fast installation
• Great acoustic performance
• Provides a smoke and fire seal for up to 120 minutes
• BS EN ISO 9001-approved for peace of mind
• Fits voids up to 1000 mm.

 

Typical applications 

 

• Underfloor voids
• Retail outlets
• Schools
• Supermarkets
• Loft conversions
• Manufacturing plants.

 

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