Effisus Breather FR-B Class B System

By 28 May, 2025Effisus

Complete Compliance for When Class A1 is Not Required

Effisus, a leader in integrated solutions for building envelope protection, is reinforcing its commitment to safer, more flexible façade design with its complete Breather FR-B Class B System – fully aligned with the requirements of the UK Building Safety Act (BSA).

As regulations evolve, Effisus continues to offer practical and high-performance solutions for every project need. Effisus Breather FR-B System provides a dependable, fully tested Class B option for projects where Class A1 or A2 fire classification is not required – without compromising safety, efficiency, or compliance.

Key System Highlights:

  • Fire Classification B-s1,d0 (according to EN 13501-1).
  • No restrictions on higher-risk building applications (HRB).
  • Designed to meet Building Safety Act (BSA) standards for relevant use cases.
  • Highly breathable, enabling effective moisture control behind façades.
  • Watertight (W1), airtight, and UV-resistant, ensuring long-term performance.
  • Durable, lightweight construction for ease of installation.
  • Available with a full suite of compatible accessories, delivering a complete and tested system.

Project Royal Wharf
London, UK

“Not every project requires a Class A1 solution – but every project deserves certified protection that meets today’s safety expectations,” said Ana Gonçalves, Façade Product Manager. “The Effisus Breather FR-B system allows us to offer a wider range of solutions to the UK construction sector, ensuring specifiers and contractors to have the flexibility to select compliant, reliable solutions for a broader range of applications.”

Ideal for commercial, residential, and mixed-use developments, the Breather FR-B system provides a cost-effective, regulation-compliant façade design where Class B fire performance is permitted.

Effisus invites specifiers, architects, and contractors to explore how this new product can support their façade projects — providing peace of mind, efficiency, and value.

Project Air Promenade
Nice, France

To discover more about the Effisus Breather FR-B System, request samples, or speak with a technical specialist.

About Effisus

Effisus develops integrated solutions to protect buildings from weather impacts and fire-related risks. Through innovation, sustainability, and technical support, Effisus ensures the long-term performance and reliability of building envelopes across the globe.

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