Moisture intrusion in a wall system can cause building defects and health ailments for occupants, making rainscreens a very important tool in water mitigation. There are several popular types of rainscreens that manage moisture infiltration in different ways. The two most common panelized systems are drained and back-ventilated, and pressure-equalized rainscreens.
The origins of moisture in wall cavities differ depending on climate,
construction practices, and occupant lifestyles. Common sources present in all climates rcs data include moisture resulting from the construction processes either due to excess water evaporating from the building materials (e.g. curing concrete and drying lumber), or from exposed conditions during the construction process (e.g. uncovered material storage and rain-soaked wall assemblies.
By Carolina Albano
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