Ventilated cladding, also known as rainscreen cladding, is a building envelope system used in the construction industry to enhance the performance and aesthetics of a building's exterior walls. It is a two-layered approach to wall construction that provides an additional layer of protection against moisture and improves energy efficiency.The system consists of an outer cladding layer and an inner weather-resistant barrier. The outer cladding layer, which can be made from materials such as metal panels, terracotta tiles, fibre cement, or natural stone, is mounted away from the building's structural wall using a series of supporting elements like brackets or rails. This creates an air gap, or cavity, between the cladding and the building's main structure. The purpose of this gap is to allow air to circulate freely, creating a ventilated space that aids in moisture evaporation and regulates temperature.The inner weather-resistant barrier acts as a second line of defence against water infiltration. It is typically a vapour-permeable membrane that prevents moisture from entering the building while allowing water vapour to escape.