Introducing Effisus Breather FR-B ST: A New Breathable Membrane for Modern Façade Solutions

Modern façade systems need to do more than protect buildings from external weather conditions. They must also support fire performance, moisture control, installation quality and long-term durability. 

To meet these requirements, Effisus is introducing the Effisus Breather FR-B ST, a new breathable façade membrane designed for construction projects requiring reliable waterproofing, vapour permeability and controlled fire behaviour. 

Particularly relevant for the UK market, this new membrane has been developed to support today’s façade requirements, where safety, weather protection and installation reliability are key. 

The membrane combines: 

  • B-s1,d0 fire classification  
  • W1 watertightness  
  • Excellent vapour permeability  
  • UV resistance  
  • Resistance to temperatures up to 120°C  
  • Compatibility with Effisus tapes and adhesives  

This makes it a reliable solution for everyday façade applications, helping protect the building envelope while supporting long-term performance. 

Why Breathable Membranes Matter in Façade Protection 

A high-performing breathable façade membrane helps protect the construction from water ingress while allowing vapour diffusion, reducing the risk of trapped moisture and supporting long-term façade performance. 

Designed for Reliable Waterproofing and Vapour Permeability 

The Effisus Breather FR-B ST combines W1 watertightness with vapour permeability, helping resist water penetration while allowing the façade system to breathe, even under demanding conditions such as UV exposure and temperatures up to 120°C. 

Fire Performance for Façade Applications 

With its B-s1,d0 fire classification, the membrane supports applications where controlled fire behaviour is required. It is designed to work as part of a complete system with compatible tapes, adhesives, fixings and installation details. 

The Effisus Breather FR-B ST is also part of the wider Effisus membrane portfolio: Products – Effisus.

A Complete Façade Protection System 

The membrane is supported by a range of Effisus accessories, allowing it to be integrated into demanding façade details and installation conditions. 

Compatible accessories include: 

This system approach helps support installation quality, façade efficiency and long-term reliability across different project requirements.

Supporting Architects, Contractors and Installers 

Façade membrane selection is often influenced early in the design stage, but its performance is proven during installation and throughout the building’s life cycle. 

For architects and engineers, the solution provides a clear and reliable membrane option with fire classification, watertightness and vapour permeability. 

For main contractors, it supports project quality, risk reduction and reliable project delivery. 

For installing contractors, it offers a system-compatible solution that can be used with Effisus tapes and adhesives, helping simplify installation and detailing on site. 

Built for Long-Lasting Façade Protection 

The launch of Effisus Breather FR-B ST strengthens the Effisus façade membrane portfolio, offering a modern standard solution for projects that require dependable waterproofing, breathability and fire performance. 

By combining membrane performance with a complete accessory system and Effisus technical expertise, this solution supports safer, more durable and more efficient façade applications. 

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