A1 Fire Rated Effisus Vapour FR Membrane

Fire Rated Weatherproofing Vapour Barrier Membrane

The Effisus Vapour FR Membrane is a high quality and multifunctional weatherproofing vapour barrier made of a special fiberglass technology with an aluminum foil, developed to achieve a fire reaction Class A1 in accordance with EN13501-1.

Works as a vapour control layer (VCL) protecting the building from condensation risk and improving the airtightness and consequently the energy efficiency.

Can be used in facade rainscreen cladding, curtain walls and many other applications to protect the insulation and building interior from water, heat radiation and moisture transfer. It also works as a fire retardant layer in constructions.

This solution is available at Effisus NBS Source profile.

Why should you choose Effisus Vapour FR Membrane?


  • Fire reaction: Class A1, in accordance with EN 13501-1;
  • Watertight
  • Water Vapour diffusion tight (closed joints)
  • Airtight
  • Windtight
  • Integrated component of the Effisus EcofacadeSystem


  • 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

Effisus Vapour FR System – Fire Resistance Waterproofing Vapour Membrane

Typical Applications

  • Rainscreen cladding
  • Interfaces in ventilated facades
  • Interfaces in curtain walls
  • Interfaces in traditional facades
  • Interfaces in pre-fabricated facades

Solution benefits

  • Fire protection – Class A1, according to EN13501-1. 
  • Multifunction – 100% water, vapour and wind tight.
  • Resistant – High mechanical resistance and resistance to high and low temperature.
  • Energy Efficiency – The airtightness of the membrane improves the air quality in the building interior, durability of all the facade components and avoid condensation risk.

Technical Characteristics

Testing Method  Results
Reaction to Fire – EN 13501 – 1 Class A1
Sd value – EN 1931 >1500
Vapour resistivity – EN 1931 >7500 MNs/g
Water penetration – EN 1928 W1, passed
Tensile Strength MD (N/50mm) – EN12311-1 >700; max.890/>900
Tensile Strength CD (N/50mm) – EN12311-1 >400; max.861/>900
Tear Resistance MD(N) – EN 12310-1 >170; max.176/180
Tear Resistance CD(N) – EN 12310-1 >130; max.147/160

Supporting Information

Technical Sheet System – Hot Climates

Technical Sheet System – Cold Climates

Guidance Fire – Hot Climates

Guidance Fire – Cold Climates


BBA Certificate – Vapour FR

BBA Certificate – Envelope FR System

Related Products

A2 Fire Rated
AVCL System

A1 Fire rated
Breather FR Membrane

A2 Fire Rated
Breather FRSystem