Weatherproofing the Facade – Design Considerations

ONLINE WORKSHOP

1 FORMAL CPD POINT

4:00 PM AEST

Presented by Louis Laurita

Understanding that the importance of weatherproof membranes in the external façade goes beyond protecting the building from the external elements. You have to also consider the vapour permeability and design of the building fabric to avoid such risks associated with the health and wellbeing of the occupant. We deep dive into ramifications of proper weatherproofing using flexible or rigid materials that affects the air tightness of buildings. This needs to take into consideration the vapour permeability of the Weather Resistive Barriers (Sarking) so you can mitigate the risk of sick building syndrome.

At the end of the presentation attendees will be able to:

● The relationship between thermal efficiency vs weatherproofing vs health and amenity.
● Understand how WRBs (Sarking) are designed and installed to manage moisture.
● Why rigid air barriers may be required to support the membranes in façade design and what properties of rigid air barriers are desirable.
● How the use of vapour permeable materials and use of intelligent air barriers (IABs) mitigate the risk of mould growth.
● To understand why weathertight buildings can increase the risk of condensation and subsequent mould growth.
● Deemed to satisfy NCC compliance with Health and amenity clauses vs using verified design solutions to deliver buildings that actually work.

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