Ash & Lacy - Metal rainscreen facade system specification - CPD video


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This CPD, brought to you by Ash and Lacy and Construction CPD, covers the specification of metal rainscreen façades, and covers:

  • An overview of ventilated rainscreens
  • The benefits of metal rainscreen cladding
  • System options and features
  • Detailing support systems
  • As well as specification performance and testing criteria

Rainscreen cladding is a modern method of construction that relies on several key principles to deliver long term building performance and energy efficiency benefits. It comprises a layered cladding system that protects the inner leaf construction, while preventing the build-up of moisture.

When compared with masonry type construction rainscreen systems offer significant benefits in reducing condensation risk due to the ventilated cavity detail. They help to ensure a stable temperature is maintained, reducing the risk of condensation. The external cavity also allows for water ingress to pass harmlessly through the external wall and drain out, without breaching the ‘dry’ interior structure. This is why rainscreen systems are often termed as ‘drained and ventilated’ systems.

The ventilated cavity has an important role in the long-term durability of the building structure and provides benefits in terms of maintenance and safeguarding the health and wellbeing of building occupants.

Ventilation reduces the risk of moisture, such as rain ingress and condensation, from reaching the internal structure. This moisture, if allowed to accumulate could cause problems such as structural damage, damp, mould and reduced air quality. The ventilation can also improve thermal performance of the building – throughout the year.

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