•A Rainscreen system consists of an outer panel, a ventilated cavity and an inner leaf

• In driving rain conditions moisture forms a membrane across the baffled vertical and horizontal joints

• The majority of water is deflected off the outside face – any penetrating water is disposed of through drainage

• Rainscreen systems differ from brick wall sealed construction as the beneficial effects to air movement are utilised

• A Rainscreen system is pressure equalised – the joints are open or lightly baffled, allowing pressure equalisation in driving rain