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What is the major purpose of cladding?
Cladding is a material used as the exterior wall enclosure of a building. The cladding of a building is its most visible part. Its major purpose is to separate the indoor environment of a building from the outdoors.
Cladding must prevent the entry of water, snow and ice into a building. Water on the face of a building is known to be driven by wind not only in a downward direction, but in every other direction, even upward.
Water problems, that is keeping water out, are especially great on very tall buildings. These buildings rise to height where wind velocities are extremely high.
They are much higher than a ground level. It should be taken into account that on tall buildings water tends to penetrate the smallest crack or hole and enter the building.