A2 Fire Rated Effisus Breather FR System

Fire Rated Weatherproofing Breathable Membrane and required accessories.

The Effisus Breather FR System is fire rated as Class A2-s1,d0 based on EN 13501-1 and Class A (or Class 1) according to ASTM E84, having obtained the final fire classification with Effisus accessories (tapes and adhesives) tested as a system.

It should be installed on top of the external insulation (cold side) protecting the entire façade composition. However, and depending on the cladding brackets complexity (size/shape) it is acceptable that breather membrane systems be fixed on the top of the sheating board. The weatherproofing design of the breather membrane systems should be done in detail and in project-by-project basis.

This solution is available at Effisus NBS Source profile.

Why should you choose Effisus Breather FR System?


  • Class A (or Class 1) in accordance with ASTM E84;
  • Class A2-s1,d0 in accordance with EN13501-1;
  • Optimum UV resistance
  • Watertight
  • Wind tight
  • Integrated component of the Effisus Ecofacade System


  • High impact on building longevity
  • Promotes indoor air quality and user health
  • Reduced maintenance needs
  • Recyclable Membranes
  • Non-solvent accessories
  • Reduction of wastes by customizing solutions

Typical Applications

  • Rainscreen cladding
  • Cavity and masonry
  • Leaf weatherboarding cladding
  • Timber frame cladding

Solution benefits

  • Fire protection – Class A2–s1, d0 according to EN 13501-1, tested with Effisus accessories.
  • Multifunction – Wind and water tight, UV resistant.
  • Resistant – High mechanical resistance, with resistance to thermal variations.
  • Universal – Extremely lightweight, suitable for facades with open or closed joints.
  • Complete system – Complete range of accessories for any project need.
  • Energy Efficiency – Improves the air quality of building interior, durability of all the facade components and minimizes the condensation risk.

Technical Characteristics

Testing Method  Results
Reaction to Fire – ASTM E84 Class A (or Class A1)
Reaction to Fire – EN 13501 – 1 Class A2 – s1, d0
Tensile Strength MD/CD (N/50mm) 2015/1725 (EN 12311-1)
Tensile strength (After ageing) MD/CD (N/50mm) 2800/2210 (EN 12311-1)
Tear resistance MD/CD (N) 328/255 (EN 12310 – 1)

Supporting Information

Technical Data Sheet System

Guidance Fire


BBA Certificate – Breather FR

BBA Certificate – Envelope FR System

System accessories

Effisus 2Adjoin DF Tape

Effisus 2Bond DS

Effisus Bonding KF+P Adhesive

Related Products

A1 Fire rated
Breather FR Membrane

A1 Fire Rated
AVCL Membrane

A2 Fire Rated
AVCL System