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Technical Booklet E Fire Safety·Page 137·5.4H(a)

Membranes in External Walls - Minimum Classification

Membranes used as part of external wall construction must achieve a minimum European Class B-s3, d0 classification.

fire-safetyhrb
membranes used as part of the external wall construction should achieve a minimum classification of European Class B-s3, d0;

Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet E - Fire Safety.pdf