Cavity Fire Barriers

Cavity fire barriers are an essential passive fire protection system designed to prevent the spread of fire and smoke through concealed spaces within a building. Installed within wall cavities, floor voids and ceiling spaces, cavity barriers help maintain fire compartmentation and support the overall fire safety strategy.

Cavity fire barriers are installed within concealed building spaces to prevent fire travelling unseen through cavities and voids.

By maintaining compartmentation lines within hidden spaces, cavity barriers help slow the spread of fire and protect both occupants and the structure of the building.

Preventing Fire Spread Through Hidden Spaces

A cavity fire barrier acts as a firebreak within concealed areas of a building, helping prevent flames and smoke from spreading through hidden cavities. Many cavity barriers incorporate intumescent materials which expand when exposed to heat. This expansion seals gaps within the cavity, blocking the passage of fire and smoke between building compartments.

These systems are particularly important in modern buildings with façade cavities, roof voids and partition walls where fire could otherwise spread rapidly through unseen spaces.

Trusted Cavity Fire Barrier Specialists

Lincs Firestop installs a wide range of cavity fire barrier systems designed to maintain fire compartmentation throughout concealed areas of a building. Our experienced team works with approved fire protection manufacturers across the UK and Europe to ensure every system is installed correctly and performs as intended.

From new construction projects to remedial fire protection works, we provide reliable cavity barrier installations designed to maintain the integrity of a building’s fire protection strategy.

Comprehensive Structural Steel Protection Services

Comprehensive Cavity Fire Barrier Systems

Façade Cavity Barriers

Fire barriers installed within external wall cavities to prevent fire spreading between floors through façade voids.

Internal Wall Cavity Barriers

Barriers installed within partition walls and concealed internal cavities to maintain fire separation.

Ceiling and Floor Void Barriers

Fire barriers installed above ceilings, below floors and within service voids to stop fire travelling through hidden spaces.

Specialist Cavity Barrier Installation

Professional installation of cavity barrier systems tailored to the requirements of each building and project specification.

Where Cavity Fire Barriers Are Applied

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External wall and façade cavities

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Partition wall cavities

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Roof voids and ceiling spaces

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Floor voids and service cavities

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Commercial, residential and mixed-use developments

Fully Compliant Fire Protection Experts

Lincs Firestop installs cavity fire barrier systems using approved fire protection products that meet the latest UK fire safety regulations and building standards.

Our experienced installers ensure each barrier is installed correctly and integrated into the building’s fire compartmentation strategy, helping maintain safety and compliance throughout the lifespan of the building.

Fully accredited Fire Protection Experts

Frequently Asked Questions

How do I get a quote for passive fire protection services?

We begin with a site visit or review of drawings and scope. From there, we provide a clear, transparent quotation based on the required works. For complex projects, surveys can be carried out first to ensure accuracy and compliance from the outset.

How do I know if I need fire stopping or passive fire protection services?

If your building has service penetrations, risers, ducts, or compartment walls and floors, fire stopping is required. This is especially important following refurbishments, M&E works, or changes in building use. A passive fire inspection or compartmentation survey will identify any defects or non-compliant areas.

How do you ensure fire stopping work is compliant?

All installations follow manufacturer-tested systems and relevant British Standards. We carry out quality checks, photographic evidence capture, and provide detailed documentation to support compliance, audits, and building safety records.

What passive fire protection services do you provide?

Our services include fire stopping installations, compartmentation surveys, penetration sealing, fire barriers, fire door works, remedial fire protection, and inspection and reporting. All works are carried out using tested, compliant systems and installed to current regulations.

What types of buildings does Lincs Firestop work in?

We work across a wide range of sectors, including commercial buildings, industrial units, healthcare facilities, education settings, residential developments, and social housing. Our services are tailored to the specific compliance and safety requirements of each environment.

Why is passive fire protection so important?

Passive fire protection is critical because it helps contain fire and smoke within a building, protecting escape routes, reducing structural damage, and saving lives. Properly installed passive fire systems ensure a building performs as designed in the event of a fire and remains compliant with UK fire safety legislation.

Speak to Our Passive Fire Protection Specialists

Whether you’re planning a new development or reviewing existing fire protection systems, Lincs Firestop can provide specialist cavity fire barrier installations tailored to your project.