Rainscreens are growing in usage as a reliable building component that shields against rain, snow and ice, preventing potentially harmful moisture from bleeding through a building's exterior walls. As a building envelope support mechanism, a rainscreen's primary function is to shed water downwards and outwards out of the building. To do this, the exterior cladding is placed away from the backup wall, creating an air cavity that becomes a weather-resistant barrier. By design, any moisture that does migrate through the cladding will easily drain down the cavity, away from the building. Air that flows between the cladding and the wall accelerates evaporation of any residual moisture.
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