Today, our team participated in an insightful CPD seminar presented by Allan from Serge Ferrari, focussing on A1-W2 and A2-W1 building membranes. This session provided valuable knowledge on the different types of building membranes, their importance in construction, and how they respond to fire, rain, and other environmental factors.


Understanding Building Membranes
The seminar began with an overview of the different types of building membranes, particularly the Euroclass A1-W2 and A2-W1 membranes. These membranes are crucial in construction, especially for high-rise buildings, due to their ability to provide fire resistance, manage moisture, and ensure breathability. Understanding these membranes and their classifications can help architects, builders, and engineers make informed decisions when selecting materials for their projects.
The Importance of A1-W2 and A2-W1 Membranes
During the session, the importance of A1-W2 and A2-W1 membranes was highlighted in relation to the findings from the Grenfell Tower investigation. These membranes offer enhanced fire safety features that are vital for building compliance and safety. The attributes of Euroclass A1 and A2 building membranes were discussed, including their resistance to driving rain and the role they play in damp-proofing high-rise buildings. This knowledge is essential for ensuring buildings are safe, compliant, and capable of withstanding environmental challenges.
Certificates and Compliance
Another key point covered in the seminar was the significance of certificates and compliance. Understanding which membrane is suitable for different types of buildings is critical for meeting regulatory standards. The session also covered the various types of independent tests that membranes must undergo, including fire, rain, and breathability tests. This ensures that they meet the necessary safety standards and can perform effectively under challenging conditions.
Membrane Selection and Installation Considerations
The seminar also explored practical considerations for selecting and installing membranes. For example, choosing the right membrane for the right type of building is crucial. The seminar provided guidance on how to make this decision based on building requirements, safety regulations, and environmental conditions. Proper installation is also vital to maximise the effectiveness of these membranes, whether for new construction or re-cladding projects.
Benefits of Euroclass A1 and A2 Membranes in Re-Cladding Programs
Euroclass A1 and A2 membranes are especially beneficial in supported re-cladding programs, as highlighted in the session. These membranes provide a higher level of safety and compliance, which is particularly important in light of recent regulations and the lessons learnt from the Grenfell Tower incident. Additionally, understanding the effects of driving rain on W1 and W2 membranes can help in selecting the appropriate membrane for specific building needs.


Today’s CPD seminar by Serge Ferrari was highly informative. It shed light on the complexities of building membrane selection and installation. By understanding the differences between Euroclass A1-W2 and A2-W1 membranes, as well as their compliance requirements and their role in ensuring building safety, our team is now better equipped. We can now make more informed decisions in future projects. We look forward to applying these insights to enhance our practices.
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