Updated BS 8524 Fire Curtain Standards (2025):

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The British Standards Institution has officially published the updated BS 8524 series of standards for active fire curtain barriers, bringing important clarity and renewed guidance for fire safety professionals across the UK.

For building designers, contractors, and property owners specifying fire protection systems, the updated BS 8524 framework sets the benchmark for how fire curtain systems should be designed, tested, installed, and maintained.

At ASFP, we welcome this long-awaited update as a significant step forward for the fire safety industry and for organisations looking to install compliant fire curtain barriers in commercial and residential buildings.

Why the Updated BS 8524 Standard Matters

Fire curtain barriers play a crucial role in passive fire protection strategies, helping to compartmentalise buildings and prevent the spread of flames and smoke during a fire.

The revised BS 8524:2025 standards provide clearer guidance on how these systems must perform in real-world fire scenarios. The standard remains divided into two essential sections:

BS 8524-1 – Product specification and performance requirements
BS 8524-2 – Code of practice for application, installation, commissioning and maintenance

Together, these documents form the primary reference for active fire curtain barrier systems in the UK, ensuring consistent product performance and installation practices.

For customers purchasing fire curtain systems from ASFP, these standards reinforce the importance of selecting reliable, tested fire safety solutions that meet the latest industry expectations.

Resolving the Overlap with European Fire Curtain Standards

One of the reasons the update to BS 8524 took several years was the need to resolve an overlap with the European product standard BS EN 16034.

The revised standard now clearly distinguishes where each regulation applies.

While BS EN 16034 is mandatory for certain door and pedestrian access systems — such as those used in shopping centres — BS 8524 remains the key UK standard for most active fire curtain barrier installations.

This clarification provides much-needed certainty for architects, fire engineers, and construction professionals specifying fire curtain systems.

More Rigorous Testing Requirements for Fire Curtains

One of the defining features of the updated BS 8524 standard is its more demanding testing regime compared with some European standards.

Fire curtain systems tested to BS 8524 must demonstrate:

• High levels of reliability and operational durability
• Proven fire resistance performance
• Effective smoke containment
• Resistance to mechanical force and impact
• Verified performance of control systems and safety devices

The standard also requires cycle testing and independent ‘hot motor’ testing, ensuring that curtain systems can operate correctly even under extreme fire conditions.

These stringent requirements help ensure that fire curtain barriers — including those supplied by Neco Fire Gard— provide dependable protection when they are needed most.

Alignment with the International Fire Curtain Standard

The updated BS 8524 now references the global fire curtain standard ISO 21524.

This international alignment introduces improved testing methods and covers modern product features such as:

• Vision panels within fire curtains
• Enhanced smoke containment testing
• Updated system classification methods

By incorporating ISO guidance, the revised UK standard ensures that fire curtain performance expectations remain aligned with international best practices.

Third-Party Certification Returns to the Market

A significant challenge for the UK fire curtain sector arose in 2023 when previous certification schemes withdrew, leaving a gap in UKAS-accredited third-party product certification.

The situation has now improved with UL Solutions achieving accreditation to certify products to BS 8524.

This development restores an essential independent verification pathway, helping ensure consistent testing and product compliance across the industry.

What the BS 8524-1:2025 Standard Covers

The updated BS 8524-1:2025 standard focuses specifically on the design, testing, and classification of active fire curtain barrier assemblies.

It evaluates a range of key performance characteristics including:

• Reliability and durability during repeated operation
• Fire resistance capability during tested fire conditions
• Smoke containment performance
• Resistance to applied forces and mechanical stress
• Performance of control units and ancillary safety equipment
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However, the standard does not apply to certain related products such as:

• Structural fire barriers built into building elements
• Theatre or stage curtains covered under BS 5867-1
• Decorative curtain fabrics and blinds
• Smoke barriers covered by BS EN 12101-1
• Some retail access systems covered by BS EN 16034
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Choosing Compliant Fire Curtain Systems

For building owners and construction professionals, the updated BS 8524 standards provide clearer guidance for specifying compliant fire curtain systems.

When selecting a fire curtain supplier, it is important to ensure that systems are:

• Designed to meet current UK fire safety standards
• Independently tested and verified
• Installed and commissioned according to best practice guidance
• Maintained throughout the building’s lifecycle

At ASFP, we work closely with contractors, architects, and developers to supply high-performance fire curtain solutions that support modern building fire protection strategies.

The Future of Fire Curtain Safety in the UK

The republication of the BS 8524 series marks an important milestone for the UK fire protection industry.

By resolving regulatory uncertainty and strengthening testing and certification pathways, the updated standard helps ensure that active fire curtain barriers continue to play a vital role in modern building safety.

For organisations seeking reliable fire curtain systems, the latest BS 8524 guidance provides a clearer roadmap for compliant fire protection design, installation, and maintenance

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