Class A Membranes: Essential Solutions for High-Risk Building Safety 

Where are Class A Membranes Needed?  

The use of A Class membranes will in all likelihood only be required when intended for ‘relevant’ or higher-risk buildings (HRB’s). HRB’s can be defined under the UK Government’s criteria, which is stipulated under the Safety Act 2022 and Higher-Risk Buildings (Descriptions and Supplementary Provisions) Regulations 2023. Read more here: Criteria for determining whether a building is a higher-risk building during the occupation phase of the new higher-risk regime - GOV.UK 

Currently, illbruck membranes meeting this classification are ME050 (Class A2-s2, d0), ME055 (Class A1) and ME060 (Class A1) with more currently in development.  

Explore the range here:  

• ME050 FR Breather Membrane (ALU) - is a reflective breather membrane which is Class A2-s1, d0 in accordance with EN 13501-1 and water resistant to Class W1 in accordance with EN 13859-2. 

• ME055 FR Breather Membrane (White) - is a non-combustible and highly vapour permeable breather membrane which is Class A1 in accordance to EN 13501-1 and water resistant to Class W2 in accordance with EN 13859-2. 

• ME060 FR AVCL -  is a laminated, aluminium foil faced glass fibre reinforced, air and vapour control membrane with a reaction to fire Class A1 in accordance with EN 13501-1. 

As building safety regulations continue to evolve and the demand for higher fire safety performance grows, the adoption of Class A membranes is becoming increasingly common, particularly in HRB’s where enhanced protection is prioritised. As more materials are developed and become available which perform to a higher standard than the regulations, the minimum performance requirement is  likely to be increased.  

illbruck’s range of Class A membranes, including ME050, ME055, and ME060, offers solutions that not only exceed current minimum fire safety standards but are also future proofed against ongoing regulatory enhancements and support the construction of safer and more resilient buildings.  

For further details, contact us here.