Rainscreens can basically be classified into two categories, that is simple rainscreens and pressure-equalized rainscreens.
Simple rainscreens is generally sufficient for areas experiencing low rainfall. A simple rainscreen cladding is vented, while the support wall which covered with a waterproof material is airtight. The base of the wall often has a drain. One of the typical example of this kind of rainscreen would be a brick masonry finish above a concrete wall.
The second categories, pressure-equalized rainscreen’s structures is more advanced and was best protected Structures in areas that experience heavy rainfalls. The vents within the cladding enable the air contained in the cavity to bang against the layer of air barrier of the support wall as a rainstorm hits the building. the moisture is prevented from entering the structure because of the balancing of the outer and the inner pressure.
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