New Guidance on Membranes in Ventilated Rainscreen Facades

THE Metal Cladding and Roofing Manufacturers Association (MCRMA) has published a new guidance document – GD40 Understanding membranes in ventilated rainscreen facades.

This guidance document takes an integrated approach to the key elements of design.

Topics covered include: airtightness, water ingress, condensation control (vapour permeability), and fire protection to achieve the optimum performance and long-term durability in ventilated rainscreen facades.

Guidance on Membranes

The document covers the terminology of membranes including main functions; membrane placement within the envelope, considering both vapour permeable and vapour controlling membranes; regulations and detailing / installation.

The documents can be downloaded from the MCRMA website.

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