the ignorance of understanding water and how to manage it both in the construction trades and the design community. The lack of a skilled workforce and increasing pressures on designers for faster work for less money greatly impact the problem. It is important to understand the physical ways moisture can penetrate a building envelope: ?Gravity ?Kinetic "
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Energy ?is the movement of rainwater down the face of the envelope or cladding surface, as well as over other sloped areas, into openings (such as cracks, holes, and flashing) encountered on the way down. ?Capillary Action (suction) ?is the property where water will draw itself into permeable materials through small openings (such as cracks, joints,
and small holes). For instance water getting sucked into a small crack similar to sucking on a straw due to various forces of air movement. ?Surface tension is the property that causes water to cling and run on to the underside of horizontal or nearly horizontal surfaces. ?Differential Pressure Movement is when water or water vapor is driven in the
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